Details of a Researcher - SUZUKI Takayuki

Language：English Publishing type：Research paper (scientific journal) Publisher：MDPI Joint Work

Artificial neural network based model to predict mega cusp characteristics in Hasaki, Japan

Mohammad Tabasi, Takayuki Suzuki, Daniel T. Cox, Akio Okayasu

Geomorphology 464 2024.11 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

Application of the Bruun rule in evaluating the effect of water level fall on the Caspian Sea profile evolution

Enayatighadikolaei, H., Suzuki, T., Soltanpour, M., & Thilakarathne, S.

Coastal Engineering Journal 1 - 15 2024.11 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

ASSESSMENT OF REGIONAL CHARACTERISTICS FOR COASTAL DISASTER PREVENTION INFRASTRUCTURE CONSIDERING WELL-BEING AND ECOSYSTEMS IN JAPANESE COASTAL AREAS

Kohtaroh KOBAYASHI, Hiroto HIGA, Takayuki SUZUKI, Martin MÄLL

Journal of JSCE, Ser. B2 (Coastal Eng.) 80 ( 17 ) 2024.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Single Work

STUDY OF THE INTERACTION BETWEEN SOIL WATER CONTENT AND GROUND ELEVATION CHANGES IN THE SWASH ZONE

Tomoya OHKAWARA, Takayuki SUZUKI, Tomoki HAYASHI, Masayuki BANNO, Hiroto HIGA

Journal of JSCE, Ser. B2 (Coastal Eng.) 80 ( 17 ) 2024.11 [Reviewed]

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Single Work

FIELD SURVEY OF WAVE-INDUCED PRESSURE FLUCTUATIONS IN SAND LAYERS AT THE SANDBAR

Yusuke KATO, Takayuki SUZUKI, Md Shofiqul ISLAM, Hiroto HIGA

Journal of JSCE, Ser. B2 (Coastal Eng.) 80 ( 17 ) 2024.11 [Reviewed]

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Single Work

Investigating Mega-Cusp Shape Extraction Through Aerial Photos And Object Detection Algorithms

Annisa Farida HAYUNINGSIH, Takayuki SUZUKI, Martin MÄLL, Masayuki BANNO, Hiroto HIGA

Journal of JSCE 12 ( 2 ) 2024.11 [Reviewed]

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal) Single Work

DYNAMIC TRIAL MEASUREMENTS OF DENSITY CHANGES IN SAND LAYERS USING AN X-RAY CT

Tomonori NISHIURA, Takayuki SUZUKI, Mamoru KIKUMOTO, Satoshi MATSUMURA, Masayuki BANNO, Hiroto HIGA

Journal of JSCE, Ser. B2 (Coastal Eng.) 80 ( 17 ) 2024.11 [Reviewed]

Identifying key morphometrics to post-storm beach recovery through explainable AI

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Single Work

Salika Thilakarathne, Takayuki Suzuki, Martin Mäll & Masayuki Banno

Scientific Reports 14 ( 14261 ) 2024.6 [Reviewed]

Physical modeling of sandbar dynamics to correlate wave-induced pore pressure gradient, sediment concentration, and bed-level erosion

Language：English Publishing type：Research paper (scientific journal) Single Work

Islam, M. S., Suzuki, T., & Thilakarathne

Ocean Engineering 307 118161 2024.5 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

Machine learning-driven approach to quantify the beach susceptibility to storm-induced erosion

Salika Thilakarathne, Takayuki Suzuki, Martin Mäll

Coastal Engineering Journal 66 ( 2 ) 216 - 233 2023.12 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

Simulating Multivariate Natural and Large-scale Laboratory Hydro-morphodynamic Data Using Copula Approach

Mohammad Tabasi, Takayuki Suzuki, Daniel T. Cox, Shin-ichi Kubota and Jun Mitsui

11th International Conference on Asian and Pacific Coasts 2023 2023.11 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Single Work

STUDY ON DATA ASSIMILATION USING SST OF SATELLITE OBSERVATIONS BY RECYCLE GREEN'S FUNCTION APPROACH IN TOKYO BAY

Yuta SHINOHARA, Hiroto HIGA Teruhisa OKADA and Takayuki SUZUKI

Journal of JSCE 79 ( 17 ) 23-17191 2023.11 [Reviewed]

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal) Single Work

A PRELIMINARY FIELD STUDY ON WATER CONTENT AND MICROTOPOGRAPHIC CHANGES IN THE SWASH ZONE

Takayuki SUZUKI, Temma FUJINO, Tomoki HAYASHI and Masayuki BANNO

Journal of JSCE 79 ( 17 ) 23-17080 2023.11 [Reviewed]

Authorship：Lead author,　Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Single Work

ESTIMATING WAVE HEIGHT USING WAVE SOUND FROM AN IC RECORDER AT THE HIRATSUKA COAST, JAPAN

Journal of JSCE 79 ( 17 ) 23-17016 2023.11 [Reviewed]

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Single Work

CHARACTERISTICS OF GROUNDWATER LEVEL GRADIENT VARIATION ON SINKING TYPE DISASTER BEHIND THE SEAWALLS

Naoki UCHIITO, Masashi OCHI, Makoto MIYATAKE, Yusuke KATO, Shinji SASSA , Tatsuya MATSUDA, Takayuki … Show more authors

Journal of JSCE 79 ( 17 ) 23-17092 2023.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Single Work

AN EXPERIMENTAL STUDY ON SEDIMENT TRANSPORT OF MIXED SAND NOURISHMENT

Tatsuya MIYAJIMA, Takayuki SUZUKI and Hiroto HIGA

Journal of JSCE 79 ( 17 ) 23-17097 2023.11 [Reviewed]

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Single Work

Quantification of Wave-induced Liquefaction in Small-scale Surf Zone Sandbar

Md Shofiqul Islam and Takayuki Suzuki

11th International Conference on Asian and Pacific Coasts 2023 2023.11 [Reviewed]

Authorship：Last author Language：English Publishing type：Research paper (international conference proceedings) Single Work

APPLYING ARTIFICIAL NEURAL NETWORKS FOR PREDICTING BEACH VULNERABILITY TO STORM-INDUCED EROSION

Salika THILAKARATHNE, Takayuki SUZUKI, Martin MÄLL

Journal of JSCE 11 ( 2 ) 23-18101 2023.10 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

EFFECT OF SEDIMENT SIZE ON SANDBAR MORPHOLOGY IN DIFFERENT COMPACTION CONDITIONS

Md Shofiqul ISLAM, Takayuki SUZUKI

Journal of JSCE 11 ( 2 ) 23-18100 2023.10 [Reviewed]

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Single Work

INVESTIGATION OF TSUNAMI INDUCED LANDWARD SCOUR WITH XBEACH

Journal of JSCE

Journal of JSCE 11 ( 2 ) 23-18089 2023.10 [Reviewed]

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Single Work

Laboratory modelling of vertical sediment mixing in the surf zone

Takayuki Suzuki, Kiichi Tajima, Ravindra Jayaratne

Coastal Engineering Journal 2022.11 [Reviewed]

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal) Single Work

Statistical modeling of undertow on a natural beach

Borribunnangkun Kullachart, Takayuki Suzuki

Coastal Engineering Journal 2022.11 [Reviewed]

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Single Work

Sediment Size Effect on the Landward Coastal Structure Scour Prediction due to Tsunami

Mustarakh GELFI, Takayuki SUZUKI and Ravindra JAYARATNE

Journal of JSCE, Ser. B2 (Coastal Eng.) 78 ( 2 ) I_469 - I_474 2022.11 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

Modeling Undertow Distributions under Low-Wave Conditions using XBeach

Kullachart BORRIBUNNANGKUN, Takayuki SUZUKI, Martin MÄLL, Hiroto HIGA

Journal of JSCE, Ser. B3 (Ocean Eng.) 78 ( 2 ) I_127 - I_132 2022.11 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

A Simple Approach to Predict the Beach Vulnerability to Storm-induced Erosion in Hasaki Coast, Japan

Salika THILAKARATHNE, Takayuki SUZUKI, Martin MÄLL, Hiroto HIGA and Md Abdul MALEK

Journal of JSCE, Ser. B2 (Coastal Eng.) 78 ( 2 ) I_985 - I_990 2022.11 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

EXPERIMENTAL STUDY OF LOCAL SCOUR AROUND MONOPILE FOUNDATIONS CAUSED BY WAVES AND CURRENTS AND THE EFFECTIVENESS OF COUNTERMEASURE

Kenta AOKI, Kano YAGAMI, Hiroyuki KATAYAMA, Naruhisa MIURA and Takayuki SUZUKI

Journal of JSCE, Ser. B2 (Coastal Eng.) 78 ( 2 ) I_475 - I_480 2022.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Single Work

AN EXPERIMENTAL STUDY ON THE EFFECTS OF SAND COMPACTION AND SEDIMENT DIAMETERS ON THE TOPOGRAPHY CHANGE OF NOURISHED SAND

Takayuki SUZUKI, Jiayi HU, Natsuki YOSHIMURA and Hiroto HIGA

Journal of JSCE, Ser. B2 (Coastal Eng.) 78 ( 2 ) I_577 - I_582 2022.11 [Reviewed]

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Single Work

CHARACTERISTICS OF MEGACUSP DEFORMATION AFTER HIGH WAVE EVENTS

Takayuki SUZUKI, Towa YASUTA, Mohammad TABASI and Hiroto HIGA

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 78 ( 2 ) I_511 - I_516 2022.11 [Reviewed]

Authorship：Corresponding author Language：Japanese Publishing type：Research paper (scientific journal) Single Work

An effective process-based modeling approach for predicting hypoxia and blue tide in Tokyo Bay

Kangnian Wang. Yoshiyuki Nakamura, Jun Sasaki, Tetsunori Inoue, Hiroto Higa, Takayuki Suzuki, Muham … Show more authors

Coastal Engineering Journal 64 ( 3 ) 2022.9 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

A Copula-Based Simulation of Wave-Induced Pore Water Pressure Gradient and Local Acceleration Within Surf Zone for Natural and Laboratory Barred Beach Profiles

Mohammad Tabasi, Takayuki Suzuki and Daniel T. Cox

Frontiers in Built Environment 2022.7 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

Dynamic analysis of FGM plate under moving load considering effect of temperature

Tran, M. T., Tran, Q. S., Suzuki, T., Cuong-Le, T., & Luong, V. H.

International Journal of Structural Stability and Dynamics 22 ( 12 ) 2250130 2022.5 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Single Work

A novel coupled finite element method for hydroelastic analysis of FG-CNTRC floating plates under moving loads

Vu X. Nguyen, Qui X. Lieu, Tuan A. Le, Thao D. Nguyen, Takayuki Suzuki, Van Hai Luong

Steel and Composite Structures 42 ( 2 ) 243 - 256 2022.1 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：Techno-Press Journals Joint Work

AN EXPERIMENTAL STUDY ON THE EFFECT OF SAND COMPACTION ON THE TOPOGRAPHY CHANGE OF SAND NOURISHMENT

Takayuki SUZUKI, Natsuki YOSHIMURA, Hiroto HIGA, Yoshiyuki NAKAMURA

Journal of JSCE, Ser. B2 (Coastal Eng.) 77 ( 2 ) I_589 - I_594 2021.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Beach nourishments are implemented in many areas for the countermeasure against coastal erosion. Regarding the investigation of beach nourishment, laboratory experiments focusing on the particle size, mixing ratio, and cross-shore location of beach nourishments have been conducted. However, it cannot say that it is sufficient to examine how much the initial compaction degree of nourishment area contributes to the topography changes of the nourished area. Therefore, we conducted laboratory experiments to investigate the effect of the initial compaction of the beach nourishment on the erosion (topographical change) of the nourished area due to waves. The results revealed that the lower degree of compaction of the beach nourishment, the more significant erosion (topographical change) occurred immediately after wave generation, and the difference in erosion rate between the compacted and loose nourished sand was about twice. Moreover, when the wave overtopped the beach nourishment area, the influence of the compaction degree of the nourished area on the erosion volume is smaller than when it does not overtop the nourished area. On the other hand, when the waves did not overtop the beach nourishment area, it was found that even if the topography shape after the experiment was the same, the degree of compaction of the remaining topography was different.

ANALYSIS ON MANGROVES DISTRIBUTION CHANGE OVER THE LAST 40 YEARS BY USING RGB IMAGES OF AIRA RIVER MOUTH IN ITIOMOTE ISLAND, JAPAN AND EFFECT BY SEA LEVEL RISE

Journal of JSCE, Ser. B2 (Coastal Eng.) 77 ( 2 ) I_925 - I_930 2021.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

SENSITIVITY ANALYSIS OF WAVE NONLINEARILY PARAMETER ON XBeach PERFORMANCE FOR ONSHORE-DRECTED SEDIMENT TRANAPORT EVENTS

Takayuki SUZUKI, Daniel T. COX

Journal of JSCE, Ser. B2 (Coastal Eng.) 77 ( 2 ) I_415 - I_420 2021.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Nine onshore-directed dominant sediment transport events were extracted from the 17-year beach profile data observed at the Hasaki coast in Japan. By using these data, the performance of the sediment transport model XBeach for these events was investigated. First, the spatial distribution of wave height was compared with observed data, and the appropriate wave breaking model and its parameters were selected. After confirming the wave propagation, the model performance of profile changes was investigated. In this analysis, the sensitivity analysis of the wave nonlinearity parameter (fua), which strongly influences cross-shore sediment transport, was conducted. The results revealed that some events could simulate with good accuracy using optimized fua. However, some were not improved even if the fua was changed. Although we tried to estimate the value of fua using some parameters, e.g., wave energy flux, we could not find a good relationship between them. However, we found a positive correlation between sediment volume change in the nearshore zone and fua.

A STUDY OF WATER MASS STRUCTURE FROM CONTINUOUS OBSERVATION OF UPWELLING EVENT AT THE INNER PART OF TOKYO BAY

Koki HAYASHI, Chi NAIWEN, Hiroto HIGA, Takayuki SUZUKI, Masahiro IMAMURA, Teruhisa OKADA, Yoshiyuki … Show more authors

Journal of JSCE, Ser. B2 (Coastal Eng.) 77 ( 2 ) I_367 - I_372 2021.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

SYNTHETIC DATA GENERATION METHOD FOR OCEAN COLOR REMOTE SENSING CONSIDERING COMLEX OPTICAL PROPERTIES OF COASTAL AREAS

Hiroto HIGA, Kanako FUJITA, Salem Ibrahim SALEM, Takayuki SUZUKI, Yoshiyuki NAKAUMURA

Journal of JSCE, Ser. B2 (Coastal Eng.) 77 ( 2 ) I_391 - I_396 2021.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Evaluating XBeach performance for extreme offshore-directed sediment transport events on a dissipative beach

Takayuki Suzuki, Daniel T. Cox

Coastal Engineering Journal 2021.9 [Reviewed]

Integration of Weather Research and Forecasting (WRF) model with regional coastal ecosystem model to simulate the hypoxic conditions

Language：English Publishing type：Research paper (scientific journal) Publisher：JSCE Single Work

Hafeez Muhammad Ali, Nakamura Yoshiyuki, Suzuki Takayuki, Inoue Tetsunori, Matsuzaki Yoshitaka, Wan … Show more authors

SCIENCE OF THE TOTAL ENVIRONMENT 771 2021.6 [Reviewed]

Laboratory Investigation of the Influence of Sediment Compaction on Wave-Induced Pore Pressure Gradient and Sediment Concentration for a Sandbar

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Other Link： https://www.sciencedirect.com/science/article/abs/pii/S0048969721003569

Performance Comparison of the Wave Overtopping Formulas using Solitary Wave Conditions and Onshore Wind Effects as Parameters

Carlson Jay Eviota Martinez, Takayuki Suzuki

日本沿岸域学会研究討論会 2021.6

Language：English Publishing type：Research paper (research society, symposium materials, etc.) Publisher：日本沿岸域学会 Joint Work

TABASI Mohammad, YAMADA Masahiro, SUZUKI Takayuki

土木学会論文集Ｂ２（海岸工学） 77 ( 2 ) I_397 - I_402 2021 [Reviewed]

WAVE HEIGHT ESTIMATION BY USING WAVE SOUND FROM AN IC RECORDER AT THE HASAKI COAST, JAPAN

Language：English Publishing type：Research paper (scientific journal) Publisher：公益社団法人土木学会 Joint Work

In this study, a barred beach profile was constructed and installed in a small-scale laboratory wave flume. The beach profile was composed of a fixed profile containing a sandpit in the middle part of the flume. Different wave conditions were provided to evaluate the effect of sediment compaction on the vertical pore water pressure and sediment suspension. The pressure gradients were achieved by finite difference of measurements from an array of transducers. The magnitude of pore water pressure, pressure gradient, and sediment concentration with low and high sediment compaction were compared. In general, the magnitude of pressure gradients within the sediment layers with high compaction were larger compared to the low compaction conditions. Similarly, the recorded pore water pressure and sediment concentration were examined, and different behaviors such as the differences in the magnitude of the pore water pressure and pressure gradients due to different sediment compaction levels under almost the same hydrodynamic conditions were observed. The average of peak pressure gradients within the sediment layers under high compaction conditions was 1.4 times larger than the low compaction conditions. These results indicate the necessity of a detailed investigation of sediment's influence on pore water pressure gradient and sediment concentration.

Other Link： https://ci.nii.ac.jp/naid/130008113328

SUZUKI Takayuki, ARAKI Daichi, HIGA Hiroto, NAKAMURA Yoshiyuki

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 77 ( 2 ) I_673 - I_678 2021 [Reviewed]

ANALYSIS OF ARCUATULA SENHOUSIA DISTRIBUTION CHRACTERISTICS USING UAV AERIAL IMAGES IN THE ARIAKE SEA TIDAL FLAT FISHING GROUND

Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Field experiments were conducted at the Hasaki Oceanographical Research Station (HORS), located on the Hasaki coast in Ibaraki prefecture, to investigate the correlation between sound pressure levels and wave heights. The wave sound levels were observed 114 m landside from the average shoreline position and 11.6 m above the average sea level. The observed hourly data from October 20th to November 17th 2020 were used in the analysis. First, the significant wave height was estimated using the data measured by the sound level meter. It was confirmed that the estimation results show an almost similar trend compared to the previous studies (R2 = 0.51). Next, significant wave height values were estimated with an IC recorder. The sound pressure level and relative deviation by the IC recorder and wind speed were used to estimate the wave height. However, the highest correlation coefficient was R2 = 0.15. Therefore, relationship formula was derived between the significant wave height and the IC recorder's sound pressure level using the preceding 1.5 days data. Furthermore, the formula was used to estimate the significant wave height for the following 12 hours. As a result, although there was a slight time delay, it was found that the wave heights can be estimated with a good accurately (R2 = 0.64).

Other Link： https://ci.nii.ac.jp/naid/130008094286

HIGA Hiroto, ICHIMURA Yasushi, MIYATSUJI Takashi, SUZUKI Takayuki

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 77 ( 2 ) I_697 - I_702 2021 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

In this study, we devised a monitoring method for simultaneously estimating elevation, median grain size (D50), and Arcuatula senhousia distribution using Unmanned Aerial Vehicle (UAV) aerial images of tidal flat fisheries in the Konagai sight frontage of Isahaya City, Nagasaki Prefecture. The elevation of the tidal flat was estimated using Agisoft photoscan, and the D50 was estimated based on the reflectance obtained from the aerial images. In the elevation estimation, the bias was about 0.017m, and the D50 was correlated with the reflectance with R2 =0.615 (N=9). The detection accuracy of the Arcuatula senhousia distribution was found to be more than 70% at an altitude of 5~20m with 12-megapixel camera and decreased to less than 50% at an altitude of 30m or higher, and more than 60% at an altitude of 40m with 50-megapixel camera and decreased to less than 60% at an altitude of 50m. In addition, by examining the relationship between the estimated spatial distribution of each parameter, we were able to identify the area where Arcuatula senhousia tends to occur.

Other Link： https://ci.nii.ac.jp/naid/130008094291

REPRODUCTION OF THE SUPPRESSION EFFECT OF IRON ON SULFIDE RELEASE : VERIFICATION OF THE SUPPRESSION EFFECT OF IRON

MOCHIDA Fumika, NAKAMURA Yoshiyuki, INOUE Tetsunori, HIGA Hiroto, SUZUKI Takayuki

Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 77 ( 7 ) III_241 - III_250 2021

DOI CiNii Research

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

In eutrophic waters such as Mikawa Bay, the bottom water becomes anoxic in summer, and sulfide is leached into the bottom water due to sulfate reduction in the sediment surface layer, leading to environmental problems such as blue tide.As a method to improve the bottom sediment environment, the addition of iron materials to the bottom sediment, inspired by the natural phenomenon of iron curtain (removal of hydrogen sulfide by reaction with iron), has been devised, but its quantitative evaluation has not yet been achieved.In this study, we developed a sediment model focusing on the sulfur circulation process to quantitatively evaluate the inhibitory effect of iron addition on sulfide release, and performed reproducible calculations of sulfide elution experiments.In this study, we developed a sediment model focusing on the sulfur cycling process in order to quantitatively evaluate the effect of iron addition to the sediment.

Building Foundation Instability Induced by Tsunami Scour

Mara Jauane Nicholas, Ravindra Jayaratne, Takayuki Suzuki, Tomoya Shibayama

Proceedings of virtual Conference on Coastal Engineering 2020.12

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

MODELING OF BERM FORMATION AND EROSION AT THE SOUTHERN COAST OF THE CASPIAN SEA

Mohammad Tabasi, Mohsen Soltanpour, Takayuki Suzuki, Ravindra Mantripathi Jayaratne

Proceedings of virtual Conference on Coastal Engineering 2020.12

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

東京湾における水中物質の光学的特徴分類に基づく生物光学モデルの構築及び固有光学特性推定手法の検証

藤田夏菜子, 比嘉紘士, 中村由行, 鈴木崇之

土木学会論文集B2(海岸工学) 76 ( 2 ) I_1375 - I_1380 2020.11 [Reviewed]

LABORATORY STUDY OF MIXED-SEDIMENT TRANSPORT AND ESTIMATION OF SPATIAL DISTRIBUTION OF FINE GRAVEL DUE TO INUNDATION FLOW

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：土木学会 Single Work

SUZUKI Takayuki, KANEKO Aya, HIGA Hiroto, NAKAMURA Yoshiyuki

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 76 ( 2 ) I_589 - I_594 2020.11 [Reviewed]

Undertow Response under Low Wave Energy Conditions using XBeach

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

In this study, laboratory experimental tests were performed in a small two-dimensional wave flume. Specific quantities of mixed sediment, i.e., medium sand (d50 = 0.64 mm), coarse sand (d50 = 1.59 mm), and fine gravel (d50 = 4.05 mm), were placed near the shoreline of the landside, and these sediments were pushed landward due to the inundation flow of the transient wave. The spatial distributions of each sediment were investigated, and those of fine gravel in the mixed sediment were estimated. The spatial distributions of fine sand and coarse sand could be separated using a color clustering method by adopting colored sand for coarse sand. The results revealed that the spatial distributions of medium sand and fine gravel are farther transported compared with each uniform material case. However, the spatial distributions of coarse sand cannot be obtained a clear difference with its uniform case. The spatial distribution of fine gravel in mixed sediment can be estimated by tuning the shape of a uniform material using the ratio of medium sand in the mixed sediment.

Other Link： https://ci.nii.ac.jp/naid/130007935934

BORRIBUNNANGKUN Kullachart, SUZUKI Takayuki

土木学会論文集Ｂ２（海岸工学） 76 ( 2 ) I_67 - I_72 2020.11 [Reviewed]

SPATIAL VARIABILITY OF MICROPLASTICS IN THE FUJISAWA COAST AND PRELIMINARY EXPERIMENTAL INVESTIGATION OF ITS REMOVAL

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人土木学会 Joint Work

A two-dimensional XBeach model faces difficulty in updating the bathymetry profile under calm conditions. This study investigates the inaccuracy of predicting the undertow, which is a seaward-directed current affecting the suspended sediment load. Progress was made in applying XBeach to the prediction of the observed undertow in the field in the Hasaki coast of Japan. The observations were performed between May 9 and June 2, 2016. To assess the capability of XBeach to reproduce the undertow under low-wave-energy conditions, the datasets observed during the calm situation (after May 24, 2016) are used, and the parameters sensitive to the undertow prediction are adjusted. The results reveal a time-shift problem that occurs at the time-varying undertow velocity. The comparison becomes better when the undertow is forward-shifted for 3 h but remains underestimated. To improve the XBeach default results, a modification is implemented based on the Stokes drift, using the coefficient of water depth. This approach improves the accuracy of undertow prediction in XBeach from bad to reasonable quality for the average of RMAE value (from 0.77 to 0.48), against the observation.

Other Link： https://ci.nii.ac.jp/naid/130007935859

SUZUKI Takayuki, MIYAZAKI Rei, HIGA Hiroto, NAKAMURA Yoshiyuki

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 76 ( 2 ) I_1171 - I_1176 2020.11 [Reviewed]

令和元年台風19号及び台風21号による広域災害に関する総合研究

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

The presence of microplastics (MP) in oceans and beaches have become an issue of concern globally. The distribution of MP on coasts should be known to understand the movement of MP. In this study, the spatial and temporal variation of MP at the Fujisawa coast, Japan, was observed in spring and autumn. The results revealed that the presence of MP on the coast was 93 per m2 at the coast. Even on the same coast, the spatial and temporal variation existed, and the movement of MP on the beach may be significantly affected by the wind force. Moreover, more than 90 % of MP in the sand could be removed using a simple removal technique.

Other Link： https://ci.nii.ac.jp/naid/130007935767

二瓶泰雄, 仲江川敏之, 中北英一, 竹見哲也, 山田朋人, 三隅良平, 飯塚聡, 鈴木真一, 柳瀬亘, 立川康人, 田中茂信, 佐山敬洋, 田中智大, 朝位孝二, 清水 … Show more authors

自然災害科学総合シンポジウム講演論文集 ( 57 ) 9 - 22 2020.9

Language：English Publishing type：Research paper (scientific journal) Publisher：京都大学防災研究所自然災害研究協議会 Joint Work

令和元年台風19号では, 東日本の非常に広い範囲で長時間の豪雨をもたらし, 大規模な洪水氾濫が発生すると共に, 台風による過去最多の士砂災害件数, 竜巻などの強風被害, 記録的な高潮・高波被害が発生し, 甚大な人的・物的被害が生じた。その約2週間後には, 日本南岸の低気圧と台風21号による大雨が発生し, 千菓県や福島県などにて洪水氾濫が発生した。本研究では, 科研費・特別研究促進費による突発災害調査研究により, 台風19号, 21号による広域災害について, 全国から多分野の研究者が集結した総合研究を実施した。本報はその成果の一部を取りまとめたものである。また, 今後に向けての提言も一覧できる形でまとめている。

Other Link： https://ci.nii.ac.jp/naid/120006884186

ANALYZE THE COASTAL STORM IMPULSE (COSI) PARAMETER AND BEACH EROSION AT HASAKI COAST, JAPAN

MALEK Md Abdul, SUZUKI Takayuki, HIGA Hiroto, NAKAMURA Yoshiyuki

土木学会論文集B3（海洋開発） 76 ( 2 ) I_1061 - I_1066 2020.9 [Reviewed]

On the status and mechanisms of coastal erosion in Marawila Beach, Sri Lanka

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人土木学会 Joint Work

Coastal areas are facing more severe storms and flooding worldwide. These storms create significant morphological changes to coastlines. Coastal engineers have made several efforts to assess and predict the strength of coastal storms and morphological changes. Recently, several parameters for predicting storm impact have been proposed. In this study, the Coastal Storm Impulse (COSI) parameter is used to predict volume changes from coastal storms using the data observed in Japan. The wave height and storm duration were used to define and pull out the storms. The volume change from each storm was calculated for two areas, i.e., the entire beach profile and nearshore area (Zone 1). The correlation coefficient, R2, between the COSI parameters and the volume change for the entire profile and Zone 1 were 0.34 and 0.32, respectively. The storm events were classified into two groups based on the surge contribution, i.e., with and without the surge momentum effect for Groups 1 and 2, respectively. From the regression analysis, the correlation coefficient, R2, between Group 2 of the COSI parameters and the volume change of Zone 1 was 0.62. Moreover, the shoreline position was included in the estimation of the volume change in Zone 1, and the predicted result improved by up to R2 = 0.71. From the analysis results, although there is a relatively low correlation between the COSI parameter and the volume change at Zone 1, the relationship will increase when we focus on the storms that include surge momentum and consider the shoreline position. Thus, we considered the seasonal shoreline location to improve the prediction results.

Other Link： https://ci.nii.ac.jp/naid/130007910167

Sameera Maduranga Samarasekara Ratnayakage , Jun Sasaki, Takayuki Suzuki, Ravindra Jayaratne, R. A. … Show more authors

Nat Hazards 2020.4 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Joint Work

Other Link： https://link.springer.com/article/10.1007/s11069-020-04034-4#citeas

Coastal impacts of super typhoon Hagibis on Greater Tokyo and Shizuoka areas, Japan

Shimozono Takenori, Tajima Yoshimitsu, Kumagai Kenzou, Arikawa Taro, Oda Yukinobu, Shigihara Yoshin … Show more authors

COASTAL ENGINEERING JOURNAL 62 ( 2 ) 129 - 145 2020.4 [Reviewed]

An estimation method for blue tide distribution in Tokyo Bay based on sulfur concentrations using Geostationary Ocean Color Imager (GOCI)

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Higa, H., Sugahara, S., Salem, S. I., Nakamura, Y., Suzuki, T.

Estuarine, Coastal and Shelf Science 235 106615 2020.4 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Other Link： https://www.sciencedirect.com/science/article/pii/S0272771419305815

Effect of tidal range on longshore current variation with respect to cross-shore location of a barred beach

Takayuki Suzuki, Shuhei Sakihama, Daniel T. Cox

Coastal Engineering Journal 2020.3 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：Taylor and Francis Joint Work

Post-event survey of locally concentrated disaster due to 2019 Typhoon Faxai along the western shore of Tokyo Bay, Japan

Takayuki Suzuki, Yoshimitsu Tajima, Masashi Watanabe, Naoki Tsuruta, Hiroshi Takagi, Tomoyuki Takab … Show more authors

Coastal Engineering Journal 2020.3 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：Taylor and Francis Joint Work

Statistical analysis of longshore currents on a barred beach

Takayuki Suzuki and Daniel T. Cox

Journal of Coastal Research 35 ( 6 ) 1215 - 1224 2019.11 [Reviewed]

A LABORATORY STUDY ON MIXED-SEDIMENT TRANSPORT DUE TO INUNDATION FLOW

Language：English Publishing type：Research paper (scientific journal) Joint Work

SUZUKI Takayuki, COX Daniel T.

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 75 ( 2 ) I_337 - I_342 2019.10 [Reviewed]

DEVELOPMENT OF A BLUE TIDE ESTIMATION METHOD BASED ON OPTICAL PROPERTIES OF SULFUR BY GEOSTATIONARY OCEAN COLOR SATELLITE

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Laboratory experiments are conducted in a small 2D wave flume. A 4.7-cm transient wave height is used in the experiments. A certain amount of mixed sediment (0.64, 1.59, 4.05 mm) is placed near the shoreline of the land side, and these sediments are pushed landward due to the inundation flow of the wave. The mixing ratios of the three sediments are changed, and 11 cases are conducted. The analysis focuses on the sediment transport of fine gravel (4.05 mm). From the results, regardless of the mixing ratio, the peak location of the fine gravel is nearly the same for all cases. Moreover, the fine gravel is likely to gather at the peak location, combined with fine sediment, and the shape of the spatial distribution can be expressed using a logistic peak distribution.

Other Link： https://ci.nii.ac.jp/naid/130007724981

HIGA Hiroto, NAKAMURA Wataru, SUGAHARA Shogo, NAKAMURA Yoshiyuki, SUZUKI Takayuki

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75 ( 2 ) I_1057 - I_1062 2019.10 [Reviewed]

Statistical Analysis of Undertow on a Barred Beach

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

In this study, we developed a sulfur estimation model for blue tide distributions using geostationary ocean color imager (GOCI) data. In order to develop the sulfur estimation model, Rrs with blue tides, and light absorption coefficient and backscattering coefficient of sulfur particles were figured out by conducting field observations in Tokyo Bay and laboratory experiments. Based on the measured sulfur optical properties, we developed a bio-optical model which was incorporated sulfur as a variable and then Rrs with fluctuation of sulfur concentrations could be calculated. A sulfur estimation model based on QAA_v6 improved by the results of the calculated Rrs of blue tides was developed. Compared to the estimated sulfur by GOCI data with the measured sulfur, it was possible to estimate sulfur concentrations with high accuracy when the difference between satellite data acquisition time and stating time of sampling in the field was small. Furthermore, it was captured that spatial distributions of sulfur concentration have changed with every 1-hour interval with the change of wind condition.

Other Link： https://ci.nii.ac.jp/naid/130007730107

BORRIBUNNANGKUN Kullachart, SUZUKI Takayuki

土木学会論文集B3（海洋開発） 75 ( 2 ) I_707 - I_712 2019.10 [Reviewed]

Sediment particle movements observed using tracers under accretive wave conditions in the nearshore zone

Language：English Publishing type：Research paper (scientific journal) Publisher：公益社団法人土木学会 Joint Work

Undertow is a significant offshore-ward current that is induced by a shoreward water mass flux under wave breaking and Eulerian drift in non-wave-breaking conditions. The undertow generates offshore sediment transport and also affects swimming safety. To increase the understanding of the undertow, field observations were conducted on a barred beach, Hasaki coast, Japan, for 21 days from May 13 to June 2, 2016. A Horizontal Acoustic Doppler Current Profiler was used to measure cross-shore currents, i.e., undertow, and water levels in the surf zone. Observed data was analyzed to investigate the characteristics of the spatial and wave-energetic distributions of the undertow exceedance probability (hereafter as PE). When the wave energy flux level was high, the undertow became larger, and its PE increased. By contrast, the PE during a low wave energy level decreased with larger water depths, and its lowest value was in the trough region. Applying a Weibull distribution to PE curves can develop a statistical model of the undertow, and it can be considered that the Weibull parameters are affected by the combination of normalized values of the wave energy flux, relative surf zone location, and normalized water depth. The two parameters of Weibull distribution was able to estimate using the normalized parameter, and the model well predicted the PE. Furthermore, to demonstrate the effect of tidal ranges on the undertow, the PE distributions for each wave energy level and location were distinguished by the water level, i.e. tidal elevation, as high-tide or low-tide durations. The undertow PE was greater for low-tide data than those for high-tide and the full data at a low wave energy level.

Other Link： https://ci.nii.ac.jp/naid/130007725074

Takayuki Suzuki, Yu Inami, Shinichi Yanagishima, Shuhei Sakihama and Daniel T. Cox

Coastal Engineering Journal 2019.6 [Reviewed]

Observation of Sediment Dynamics in the Nearshore Region using Fluorescent Sand Tracers:(Effects of with and without outer bar shape on cross-shore sediment transport)

Language：English Publishing type：Research paper (scientific journal) Publisher：Taylor & Francis Joint Work

Other Link： https://www.tandfonline.com/doi/full/10.1080/21664250.2019.1629863

Potential use of discharge channel for beach recovery in Pamanukan - Subang Regency, Indonesia

Takayuki SUZUKI, Seiko KIKUYAMA, Jun SASAKI, and Hendra ACHIARI

Proceedings of the 8th CECAR 2019.4

Language：English Publishing type：Research paper (international conference proceedings) Publisher：Asian Civil Engineering Coordinating Council Joint Work

SUZUKI Takayuki

JAPANESE JOURNAL OF MULTIPHASE FLOW 33 ( 1 ) 20 - 27 2019.2 [Invited]

Cross-shore grain size and sorting patterns for the bed profile variation at a dissipative beach: Hasaki Coast, Japan

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：THE JAPANESE SOCIETY FOR MULTIPHASE FLOW Single Work

The field observations of cross-shore sediment transport from the swash zone to the offshore side of the outer bar using fluorescent sand tracers were conducted in 2014 and 2015 at the Hasaki coast, Japan facing the Pacific Ocean during storm wave conditions. The topography difference between the two years data set is that outer bar shape existed in 2014 and not existed in 2015. During the observations, wave height and wave period were observed, and sand core samplings were conducted. By using the observed wave data and the analyzed results of collected fluorescent sand tracers from the cores, the sediment movements from the offshore side of the outer bar area to the swash zone during storms were investigated. The results indicate that the sediment movements during the storms were affected by the outer bar shape. If the outer bar existed, the sediment of the onshore side of the outer bar tend to move landward, and it also moves to seaward due to undertow until the outer bar location. The sediment at the offshore side of the outer bar tends to move to onshore ward due to bedload sediment transport. However, the transport rate decrease in the trough region. The beach topography without the bar shape, the bed load sediment transport rate at the trough region was higher than that with the bar shape. Thus, the sediments at the offshore side of the bar also could move until the swash zone.

Other Link： https://ci.nii.ac.jp/naid/130007625134

Thamali Gunaratna, Takayuki Suzuki, Shinichi Yanagishima

Marine Geology 407 111 - 120 2019.1 [Reviewed]

Historical changes in the shoreline and management of Marawila Beach, Sri Lanka, from 1980 to 2017

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work

Other Link： https://www.sciencedirect.com/science/article/pii/S002532271730628X?dgcid=coauthor

Ratnayakage Sameera Maduranga Samarasekara, Jun Sasaki, Ravindra Jayaratne, Takayuki Suzuki, R.A.S. … Show more authors

Ocean and Coastal Management 165 370 - 384 2018.11 [Reviewed]

A SALINITY ESTIMATION METHOD USING GEOSTATIONARY OCEAN COLOR IMAGER IN EUTROPHICATED COASTAL AREAS

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work

Other Link： https://www.sciencedirect.com/science/article/pii/S0964569118303235?via%3Dihub

HIGA Hiroto, FUKUDA Tomohiro, NAKAMURA Yoshiyuki, SUZUKI Takayuki

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 74 ( 2 ) I_1465 - I_1470 2018.11 [Reviewed]

FIELD OBSERVATIONS OF CROSS-SHORE SEDIMENT TRANSPORT AND SEABED MIXING DEPTHS USING FLUORESCENT SAND TRACERS

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

In this study, we developed a method to estimate spatial salinity distributions based on a relationship between absorption coefficients of color dissolved organic matter (aCDOM) and Salinity, by estimating aCDOM using COMS/GOCI in eutrophicated coastal areas. Using Bio-Optical model, which was developed by in situ optical data collected at an inner part of Tokyo Bay, the aCDOM estimation accuracy was evaluated against changes of Chlorophyll-a (Chl-a) and non-algal particles (NAP). As a result, an aCDOM estimation model based on a ratio of remote sensing reflectance, Rrs(660 nm)/Rrs(490 nm) was effective when Chl-a is low concentration. Moreover, an aCDOM estimation model based on Rrs(550 nm)/Rrs(660 nm) could estimate aCDOM adequately when Chl-a is high concentration. Therefore, a switching method for the two aCDOM estimation models as using threshold values from Chl-a spatial distributions, which is preliminarily estimated by applying a field observation result assimilation FLH to GOCI images, was suggested. In comparison with in situ salinity and estimated salinity, the relationship was R2=0.71, RMSE=1.04(N=114) and it could be available to estimate salinity with high accuracy more than previous methods.

SUZUKI Takayuki, TAJIMA Kiichi, HIGA Hiroto, NAKAMURA Yoshiyuki, YANAGISHIMA Shinichi

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 74 ( 2 ) I_763 - I_768 2018.11 [Reviewed]

LABORATORY EXPERIMENTS OF SEDIMENT MIXING AND THE EFFECT OF BOTTOM EDDIES

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

 Cross-shore sediment transport and the sediment mixing of inner-surf and outer-surf zones were investigated using field data observed at a dissipative sandy beach. The field observations were conducted in May 2017 for 12 days. During the observations, since an outer bar did not exist, the sediment on the offshore side of the surf zone moved toward the shoreline. Moreover, the sediment in the surf zone moved to the offshore side of the surf zone because of undertow. The mixing depths were observed from sand cores using fluorescent sand tracers. The results indicate that the mixing depths in the surf zone were approximately 31 cm, and its spatial distribution was estimated using the wave breaking height considering the wave breaking zone. The mixing depth on the offshore side of the surf zone may be correlated with the ripple height.

GUNARATNA Thamali, AKIMOTO Saki, SUZUKI Takayuki

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 74 ( 2 ) I_737 - I_742 2018.9 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

 In this study, laboratory experiments are conducted in a two-dimensional flume with a 1-m-long sandbox in the middle of a slope. Using fluorescent sand tracers and core sample methods, the spatial and temporal variation in the mixing depths in the surf zone are investigated. The core samples are collected from the sand bed where the wave breaking and impinging are observed. The mixing depth is defined as the fluorescent intrusion depth from the bed profile at the time of core sampling with a cut-off value of 10 tracers. In the case of sediment accumulation, the mixing depth is measured from the initial bed profile. Moreover, each case of the experiments is simulated by a numerical model, Large Eddy Simulation (LES), to compare the mixing depths with the velocity field of horizontal bottom eddies. The simulation results of the surface elevations and velocity fields are verified using the measured data. The experiment results indicate that the spatial variation of the mixing depths show different trends depending on the wave breaking style. Moreover, the mixing depth variations are compared with the simulated results of the bottom horizontal eddies. The results indicate that the plunging breaker type of sediment mixing pattern in space within the wave breaking zone correlates with the spatial distribution of the maximum bottom horizontal eddies.

OBSERVATIONS OF SEDIMENT PARTICLE MOVEMENTS UNDER ACCRETIVE WAVE CONDITIONS

Takayuki Suzuki, Yu Inami, Shinichi Yanagishima, Shuhei Sakihama, Daniel Cox

Proceedings of the 36th International Conference on Coastal Engineering (ICCE 2018) 1(36) ( 68 ) 2018.8 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

A Study on Coastal Erosion and Deposition Processes in Subang, Indonesia

Kikuyama S., Suzuki T., Sasaki J., Achiari H., Soendjoyo S. A., Higa H., Wiyono A.

ASIAN AND PACIFIC COASTS 2017: PROCEEDINGS OF THE 9TH INTERNATIONAL CONFERENCE ON APAC 2017 503 - 514 2017.11 [Reviewed]

A STUDY ON UPWELLING EVENTS WITH AND WITHOUT BLUE TIDE FORMATION IN TOKYO BAY

Language：English Publishing type：Research paper (scientific journal) Joint Work

MIYASHITA Kazuya,NAKAMURA Yoshiyuki,HIGA Hiroto,TANAKA Yoji,ITO Hikaru,IKEZU Takuya,KANAYA Kazunori … Show more authors

Journal of Japan Society of Civil Engineers 73 ( 2 ) I_1213 - I_1218 2017.10 [Reviewed]

ESTIMATION OF SALINITY DISTRIBUTIONS BASED ON THE OPTICAL PROPERTY OF COLOR DISSOLVED ORGANIC MATTER BY THE GEOSTATIONARY OCEAN CLOLOR SATELLITE IN TOKYO BAY

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/73/2/73_I_1213/_article/-char/ja/

HIGA Hiroto,FUKUDA Tomohiro,MIYASHITA Kazuya,NAKAMURA Yoshiyuki,SUZUKI Takayuki

Journal of Japan Society of Civil Engineers 73 ( 2 ) I_1237 - I_1242 2017.10 [Reviewed]

A STUDY OF SEDIMENT MOVEMENTS DURING CALM WAVE CONDITIONS USING FLUORESCENT SAND TRACERS

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/73/2/73_I_1237/_article/-char/ja/

SUZUKI Takayuki,INAMI Yu,SAKIHAMA Shuhei,HIGA Hiroto,NAKAMURA Yoshiyuki,YANAGISHIMA Shinichi

Journal of Japan Society of Civil Engineers 73 ( 2 ) I_667 - I_672 2017.10 [Reviewed]

APPLICATION OF FORESHORE BEACH PROFILE CHANGE MODEL CONSIDERING THE EFFECT OF BEACH SLOPE

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/73/2/73_I_667/_article/-char/ja/

MITOURIDA Naoto,SUZUKI Takayuki,HIGA Hiroto

Journal of Japan Society of Civil Engineers 73 ( 2 ) I_577 - I_582 2017.10 [Reviewed]

A study on the transfer of blue tide and the relationship between high turbidity and sulfur in Tokyo Bay

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/73/2/73_I_577/_article/-char/ja/

A STUDY OF SEDIMENT MIXING IN SURF AND SWASH ZONES UNDER ACCRETIONAL AND EROSIONAL WAVE CONDITIONS

Thamali Gunaratna, Takeshi Kurosaki and Takayuki Suzuki

Coastal Dynamics 1007 - 1016 2017.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

OBSERVATIONS OF SEDIMENT PARTICLE MOVEMENTS DURING A STORM

Takayuki Suzuki , Yu Inami , Masayuki Banno and Yoshiaki Kuriyama

Coastal Dynamics 1017 - 1027 2017.6 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Coast Protection against Erosion and Associated Conflicts among Stakeholders: A Case-Study from Marawila Beach, Sri Lanka,

Samarasekara, R.S.M., Sasaki, J., Jayaratne, R., Suzuki, T., Ranawaka,R.A.S. & Pathmasiri, S.D.

JACZS 2017

Language：English Publishing type：Research paper (scientific journal) Joint Work

Tanaka Yoji, Nakamura Yoshiyuki, Higa Hiroto, Uno Yoshirou, Karube Tomoaki, Ito Hikaru, Sugahara Sh … Show more authors

Journal of Advanced Marine Science and Technology Society 23 ( 2 ) 19 - 24 2017

CHARACTERISTICS OF SEABED SURFACE SEDIMENT MOVEMENTS USING FLUORESCENT SAND TRACERS

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Advanced Marine Science and Technology Society Joint Work

The purpose of this study is to analyze the relationship between high turbidity and sulfur, and transfer of a blue tide after upwelling. We achieved ship observations of a blue tide at 24th August 2015 on the inner part of Tokyo Bay. There was a definite positive correlation between turbidity and sulfur from analysis of water samples. Therefore, high turbidity indicates the particulate sulfur element in a blue tide. Upwelling water of the blue tide outflowed to the middle layer for analyzing a composition of the blue tide water. It was considered that a density of upwelling water decreased slightly due to mix with around surface water. The blue tide water drifted on a pycnocline for wind driven current and density current.

SUZUKI Takayuki, KAWAGOE Asumi, YANAGISHIMA Shinichi, HIGA Hiroto

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 73 ( 2 ) I_594 - I_599 2017

RETRIEVING BLUE TIDE DISTRIBUTIONS BASED ON A TURBIDITY ESTIMATION METHOD USING THE COMS/GOCI

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

 The field experiments were conducted to investigate the characteristics of sediment movements during a short time duration. The focusing area is from the swash zone to the offshore side of the bar. At the Hasaki coast, Japan, five colored fluorescent sand tracers were installed on the seabed at different cross-shore locations, around every 50 m, from near the shoreline to the offshore side of the bar. During the experiments, seven times of seabed surface sediment samplings were conducted every 10 m of cross-shore distance from 1 hour to 144 hours after the installation of the fluorescent sand tracers. From the analysis, the sediments in the surf zone were spread in the area from near the shoreline to the onshore side of the bar within one hour after the installation. The fluctuation of the centroid of the fluorescent sand distribution was correlated with that of the wave breaking point. The sediment movements at the offshore side of the bar had a correlation with the value of the offshore wave energy flux.

HIGA Hiroto,NAKAMURA Yoshiyuki,TANAKA Yoji,SUGAWARA Shogo,TORATANI Mitsuhiro,ITO Hikaru,SUZUKI Taka … Show more authors

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 72 ( 2 ) I_1759 - I_1764 2016.11 [Reviewed]

A STUDY OF SEDIMENT MOVEMENTS DURING A STORM USING TWO DIAMETERS FLUORESCENT SAND

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/72/2/72_I_1759/_article/-char/ja/

Yu INAMI, Takayuki SUZUKI, Masayuki BANNO, Hiroto HIGA, Yoshiyuki NAKAMURA, Shin-ichi YANAGISH … Show more authors

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 72 ( 2 ) I_667 - I_672 2016.11 [Reviewed]

FIELD OBSERVATION OF BLUE TIDE UPWELLING AND OUTFLOW TO MIDDLE LAYER IN TOKYO BAY

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/72/2/72_I_667/_article/-char/ja/

TANAKA Yoji,HIGA Hiroto,NAKAMURA Yoshiyuki,UNO YOshirou,KARUBE Tomoaki,ITO Hikaru,SUGAHARA Shogo,SU … Show more authors

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 72 ( 2 ) I_1237 - I_1242 2016.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/72/2/72_I_1237/_article/-char/ja/

Analysis of the dynamic characteristics of seawater intrusion using partial wavelet coherence: a case study at Nakaura Watergate, Japan

Edwin Muchebve, Yoshiyuki Nakamura, Takayuki Suzuki, Hiroshi Kamiya

Stochastic Environmental Research and Risk Assessment 2016.10 [Reviewed]

A STUDY ON THE BEHAVIOR OF BREAKWATER CAISSON DURING THE INSTALLATION FOCUSING ON A OPERATION LEADER INSTRUCTIONS

Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Joint Work

流速と堅牢建物の考慮が津波ハザードマップに与える影響

宮下寿哉，鈴木崇之，佐々木淳，中村由行，比嘉紘士

日本沿岸域学会研究討論会 CD - R 2016.7

Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：日本沿岸域学会 Joint Work

東京湾奥部における底質放射能汚染の相対リスク評価に関する基礎的研究

立石祥三，鈴木崇之，佐々木淳，比嘉紘士

日本沿岸域学会研究討論会 CD - R 2016.7

Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：日本沿岸域学会 Joint Work

Saki AKIMOTO, Takayuki SUZUKI, Yasuo KOTAKE and Junya GOTO

Journal of JSCE, Ser. B3 (Ocean Engineering) 73 ( 2 ) I_586 - I_591 2016.6 [Reviewed]

STUDY ON EFFECTIVENESS OF WAVE DAMPING DUE TO BAMBOO FENCE IN MANGROVE COAST

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Other Link： https://www.jstage.jst.go.jp/article/jscejoe/72/2/72_I_586/_article/-char/ja/

Takayuki SUZUKI, Kohei OKAZAKI, Jun SASAKI, Thamnoon RASMEEMASMUANG, Anurak SRIARIYAWAT, Shota SAIT … Show more authors

Journal of JSCE, Ser. B3 (Ocean Engineering) 72 ( 2 ) I_55 - I_60 2016.6 [Reviewed]

DOI Web of Science PubMed

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Other Link： https://www.jstage.jst.go.jp/article/jscejoe/72/2/72_I_55/_article/-char/ja/

Study of dilution, height, and lateral spread of vertical dense jets in marine shallow water

Nadeem Ahmad, Takayuki Suzuki

Water Science and Technology 73 ( 12 ) 2016.4 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：IWA Publishing Joint Work

霞ヶ浦での白濁現象前後における藻類交代に関する一考察

五十嵐貴之，中村由行，比嘉紘士，鈴木崇之，梅澤周平

第50回日本水環境学会年会 2016.3

Language：Japanese Publishing type：Research paper (other science council materials etc.) Publisher：日本水環境学会 Joint Work

東京湾における3次元的モニタリングによる青潮・貧酸素水塊の挙動に関する考察

比嘉紘士、中村由行、田中陽二、伊藤比加留、鈴木崇之

第50回日本水環境学会年会 2016.3

Language：Japanese Publishing type：Research paper (other science council materials etc.) Publisher：日本水環境学会 Joint Work

東京湾奥部における2015年8月に発生した青潮の船上観測

田中陽二，比嘉紘士，伊藤比伽留，中村由行，鈴木崇之，宇野佳朗，軽部智章，管原庄吾

第50回日本水環境学会年会 2016.3

Language：Japanese Publishing type：Research paper (other science council materials etc.) Publisher：日本水環境学会 Joint Work

Statistical analysis of the horizontal distribution characteristics of sediment qualities in Port of Nagoya

Hattori K., Nakamura Y., Higa H., Suzuki T., Naito R. and Ogura S.

Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 72 ( 7 ) 55 - 65 2016 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

A Predictive Model for Scour Depth of Coastal Building Failures due to Tsunamis

Nicholas, M. J., Jayaratne, R., Suzuki, T., & Shibayama, T.

Coastal Engineering Proceedings 1 ( 35 ) 24 2016 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Publisher：ASCE Joint Work

Unstructured Mesh Tsunami Simulation Considering the Fine Structure of Land Use

Retno Utami Agung WIYONO, Jun SASAKI, Takayuki SUZUKI

Journal of JSCE, Series B2 (Coastal Engineering) 71 ( 2 ) I_313 - I_318 2015.11 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Spatial Distribution of Sediment Quality in Tokyo Bay through Benthic-Pelagic Coupled Modeling Approach

A.A.W.R.R.M.K. AMUNUGAMA, Jun SASAKI, Yoshiyuki NAKAMURA, Takayuki SUZUKI

Journal of JSCE, Series B2 (Coastal Engineering) 71 ( 2 ) I_1399 - I_1404 2015.11 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

A STUDY ON SEDIMENT MOVEMENT DURING A STORM USING FLUORESCENT SAND

SUZUKI Takayuki,INAMI Yu,NAKAMURA Yoshiyuki,BANNO Masayuki

Journal of JSCE, Series B2 (Coastal Engineering) 71 ( 2 ) I_679 - I_684 2015.11 [Reviewed]

ANALYSIS OF BLUE TIDE EVENTS IN TOKYO BAY BY USING A 3-D ECOSYSTEM MODEL WITH SULFUR OXIDIZATION

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/71/2/71_I_679/_article/-char/ja/

船上調査と岸壁調査を組み合わせた東京湾湾奥部における青潮の現地観測

田中陽二・中村由行・伊藤比伽留・田中雄介・山本修司・鈴木崇之

土木学会論文集B2（海岸工学） 71 ( 2 ) I_1273 - I_1278 2015.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：土木学会 Joint Work

YAMAMOTO Shuji,NAKAMURA Yoshiyuki,TANAKA Yoji,SUZUKI Takayuki

Journal of JSCE, Series B2 (Coastal Engineering) 71 ( 2 ) I_1279 - I_1284 2015.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/71/2/71_I_1279/_article/-char/ja/

Analyses of shoreline retreat by peak storms using Hasaki Coast Japan data

Nadeem Ahmad, Takayuki Suzuki, Masayuki Banno

Procedia Engineering 116 575 - 582 2015.9 [Reviewed]

COMFORTABLENESS OF COASTAL ENVIROMENTAL SOUND

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work

堅牢建物の配置による津波被害低減効果の考察－鎌倉市を例として－

齊藤翔太，鈴木崇之，中村由行

日本沿岸域学会研究討論会講演概要集 CD - R 2015.7

Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：日本沿岸域学会 Joint Work

視覚情報を考慮した海浜における快適感算出の試み

三宅伸吾，鈴木崇之，太田篤史，中村由行

日本沿岸域学会研究討論会講演概要集 CD - R 2015.7

Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：日本沿岸域学会 Joint Work

粒径を考慮した前浜地形変化モデル開発の試み

栗原圭梧，鈴木崇之，中村由行

日本沿岸域学会研究討論会講演概要集 CD - R 2015.7

Language：Japanese Publishing type：Research paper (research society, symposium materials, etc.) Publisher：日本沿岸域学会 Joint Work

Development of a benthic-pelagic coupled model for reproducing water quality in Tokyo Bay

A.A.W.R.R.M.K AMUNUGAMA, Jun SASAKI, Yoshiyuki NAKAMURA, Takayuki SUZUKI

Annual Journal of Civil Engineering in the Ocean 71 ( 2 ) 2015.6 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

SUZUKI Takayuki,KANEKO Hiroki,OTA Atsushi,NAKAMURA Yoshiyuki

Journal of Japan Society of Civil Engineer 71 ( 2 ) 1005 - 1010 2015.6 [Reviewed]

ESTIMATING WAVE HEIGHT USING THE DIFFERENCE IN PERCENTILE COASTAL SOUND LEVEL

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Coastal environmental sound was measured at three locations, the Sagami-nada Coast, Odawara; Oiso; and Fujisawa. The loudness of the sound was correlated with distance from the shoreline at a wind speed of less than 4 m/s. The sharpness of the sound had a negative correlation with wind speed. Moreover, organoleptic examination was conducted to investigate the comfort level of the sound. From the results, we found that the coastal environmental sound consist of two factors, a power factor and a clarity factor. The power factor can be estimated from loudness, and the clarity factor can be estimated from sharpness and the wave breaker index.

Other Link： https://www.jstage.jst.go.jp/article/jscejoe/71/2/71_I_1005/_article/-char/ja/

ANNUAL MODEL OF SWASH ZONE BEACH PROFILE CHANGE FOCUSING ON BERM FORMATION AND EROSION

TAKAYUKI SUZUKI, YUTAKA MOCHIZUKI, JUN SASAKI

Coastal Sediments 2015 CD - R 2015.5 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Publisher：World Scientific Joint Work

Takayuki Suzuki, Taku Hosoya, Jun Sasaki

Coastal Engineering 99 73 - 81 2015.3 [Reviewed]

A Generalization of Beach Profile Change Model Focusing on Berm Formation and Erosion

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Joint Work

Other Link： http://www.sciencedirect.com/science/article/pii/S0378383915000447

FLOW CHARACTERISTICS OF SAGAMI LAKE FOCUSING ON DIFFERENCE IN WATER DISCHARGE CONDITION

Takayuki Suzuki, Yohei Koike, Jun Sasaki and Yoji Tanaka

71 ( 1 ) 11 - 15 2015.3 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

硫黄の酸化反応を考慮した3Dモデルによる青潮の数値解析

山本修司・中村由行・鈴木崇之・田中陽二

第49回日本水環境学会年会 2015.3

Language：Japanese Publishing type：Research paper (other science council materials etc.) Publisher：日本水環境学会 Joint Work

東京湾北東沿辺部における青潮湧昇現象の現地観測

田中雄介・田中陽二・中村由行・伊藤比伽留・鈴木崇之

土木学会関東支部技術研究発表会 2015.3

Language：Japanese Publishing type：Research paper (other science council materials etc.) Publisher：土木学会 Joint Work

2014年8月の東京湾奥部における青潮イベントの観測

中村由行・伊藤比伽留・田中雄介・田中陽二・山本修司・鈴木崇之

第49回日本水環境学会年会 2015.3

Language：Japanese Publishing type：Research paper (other science council materials etc.) Publisher：日本水環境学会 Joint Work

SUZUKI Takayuki,MOCHIZUKI Yutaka

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 70 ( 2 ) I_561 - I_565 2014.11 [Reviewed]

Effect of Groundwater Fluctuation on Berm Erosion

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/70/2/70_I_561/_article/-char/ja/

INOUE Kota,Suzuki Takayuki

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 70 ( 2 ) I_556 - I_560 2014.11 [Reviewed]

Status of and Measures against Erosion of Mangrove Coast in the Upper Gulf of Thailand

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

The correlation between foreshore beach profile change, especially berm erosion, and groundwater level fluctuation was considered using a numerical model, XBeach (Roelvink et al., 2010). After conducting the model verification with the observed field data, the correlation was analyzed by numerical experiments. From the numerical experiment analysis, when the groundwater level was controlled to an original level at some regular time interval, although the berm erosion occurred as the same as the un-controlled case, the berm erosion volume is reduced.

Other Link： https://www.jstage.jst.go.jp/article/kaigan/70/2/70_I_556/_article/-char/ja/

SETO Shota,SASAKI Jun,SUZUKI Takayuki,RASMEEMASMUANG, Anurak SRIARIYAWAT

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 70 ( 2 ) I_1461 - I_1465 2014.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/70/2/70_I_1461/_article/-char/ja/

Effects of the Tsunami Countermeasures Focusing on the Tsunami Arrival Time in Kamakura

Retno Utami Agung WIYONO, Jun SASAKI and Takayuki SUZUKI

Journal of JSCE 70 ( 2 ) I_1331 - I_1335 2014.11 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

The effects of offshore wave energy flux and longshore current velocity on medium-term shoreline change at Hasaki, Japan

Takayuki Suzuki, Yoshiaki Kuriyama

Coastal Engineering Journal 2014.6 [Reviewed]

STABILITY ANALYSIS OF BREAKWATERS UNDER TSUNAMI OVERFLOW BASED ON NUMERICAL WAVE TANK

Language：English Publishing type：Research paper (scientific journal) Publisher：World Scientific Joint Work

ARIKAWA Taro,HAYASHI Tatsuya,SUZUKI Takayuki,SHIMOSAKO Kenichiro

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 70 ( 2 ) I_366 - I_371 2014.6 [Reviewed]

STUDY ON THE 2011 TOHOKU TSUNAMI BEHAVIOR IN OFUNATO BAY USING MOVING IMAGE ANALYSIS

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Other Link： https://www.jstage.jst.go.jp/article/jscejoe/70/2/70_I_366/_article/-char/ja/

HONMA Shinpei,SUZUKI Takayuki,SASAKI Jun

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 70 ( 2 ) I_283 - I_288 2014.6 [Reviewed]

On the mechanism of Damage to Laver Aquaculture in Tokyo Bay Caused by the 2011 Tohoku Tsunami

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JSCE Joint Work

Other Link： https://www.jstage.jst.go.jp/article/jscejoe/70/2/70_I_283/_article/-char/ja/

夏期の霞ヶ浦における水質の長期変動に関する考察

礒崎智史，中村由行，田中陽二，鈴木崇之

第48回日本水環境学会年会 2014.3

Language：Japanese Publishing type：Research paper (other science council materials etc.) Publisher：日本水環境学会 Joint Work

東京湾における東日本大震災による水産業への影響

山本修司，佐々木淳，鈴木崇之，R.U.A. Wiyono，田中陽二

第24回海洋工学シンポジウム CD-R 2014.3

Language：Japanese Publishing type：Research paper (other science council materials etc.) Joint Work

SASAKI Jun,YAMAMOTO Shuji,Retno Utami WIYONO,SUZUKI Takayuki,TANAKA Yoji

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 69 ( 2 ) I_351 - I_355 2013.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/69/2/69_I_351/_article/-char/ja/

Tsunami vulnerability evaluation in the Mentawai islands based on the field survey of the 2010 tsunami

Takahito Mikami, Tomoya Shibayama, Miguel Esteban, Koichiro Ohira, Jun Sasaki, Takayuki Suzuki, Hen … Show more authors

Natural Hazards 71 ( 1 ) 851 - 870 2013.11 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

AN IMPROVED SHORT-TERM SWASH ZONE BEACH PROFILE CHANGE MODEL FOCUSING ON BERM FORMATION AND EROSION

T. Suzuki , S. Isozaki and J. Sasaki

Proceedings of the 7th International Conference on Asian and Pacific Coasts (APAC 2013) 63 - 68 2013.9 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

大船渡湾における2011年東北地震津波の動画解析

本間真平, 佐々木淳, 鈴木崇之

土木学会論文集B3（海洋開発） 69 ( 2 ) 443 - 448 2013.9 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：公益社団法人土木学会 Joint Work

Field observations at an offshore observation tower during the typhoon seasons

Y. Baba, T. Kubo, Y. Uchiyama, N. Kihara, N. Mori, Y. Muto, T. Suzuki

35th IAHR World Congress 2013.9

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Numerical and experimental investigation of velocity field on a sloping beach

M. A. C. Niroshinie, T. Suzuki, J. Sasaki

12th International Symposium on River Sedimentation CD-R 2013.9 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

鎌倉沿岸における津波到達時間に着目した減災方策の検討

佐々木淳，椎野悟史，Retno Utami Agung Wiyono，鈴木崇之，田中陽二

日本沿岸域学会研究討論会講演概要集(CD-ROM) 26 2013.7

Language：Japanese Publishing type：Research paper (other science council materials etc.) Joint Work

Numerical Assessment of the 2011 Tohoku Earthquake Tsunami in Ports of Tokyo Bay with the Effectiveness of Floodgates

Retno Utami Agung Wiyono, Jun Sasaki and Takayuki Suzuki

Journal of Coastal Research SI ( 65 ) 844 - 849 2013.4 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Numerical modeling of bed profile evolution using Large Eddy Simulation

M.A.C. Niroshinie, Takayuki Suzuki and Jun Sasaki

Journal of Coastal Research SI ( 65 ) 350 - 355 2013.4 [Reviewed]

Estimation of wave height using the difference in percentile noise level of coastal environment sound as Hasaki coast, Japan

Language：English Publishing type：Research paper (scientific journal) Joint Work

SUZUKI Takayuki,HOSOYA Taku,SASAKI Jun

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 69 ( 1 ) 1 - 8 2013.2 [Reviewed]

FIELD SURVEY OF THE 2011 OF THE PACIFIC COAST OF TOHOKU EARTHQUAKE TSUNAMI DISASTER TO THE SOUTH OF IWATE PREFECTURE

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Field experiments were conducted from July 14, 2009 to Nov. 2, 2009 to investigate correlation between sound pressure levels and wave heights at the Hasaki coast, Ibaraki, Japan. From the results, we proposed an equation for estimating significant wave height using sound pressure level and difference in percentile noise level of coastal environment sound. The results of the proposed equation show a good correspondence to the observed results (R = 0.87). Also, the magnitude of the difference in percentile exceeded noise level of coastal environment sound has negative correlation with the significant wave period.

Other Link： https://www.jstage.jst.go.jp/browse/kaigan/-char/ja/

SUZUKI Takayuki,SASAKI Jun,TAJIMA Yoshimitsu,HAYANO Kimitoshi

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 68 ( 2 ) l_25 - l_30 2012 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Other Link： https://www.jstage.jst.go.jp/article/jscejoe/68/2/68_I_25/_article/-char/ja/

Linkages among interannual variations of shoreline, wave and climate at Hasaki

Y. Kuriyama M. Banno and T. Suzuki

Geophysical Research Letters 39 L06604 2012 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Behavior of the 2011 Tohoku earthquake tsunami and resultant damage in Tokyo bay

Sasaki, J., Ito, K., Suzuki, T., Wiyono, R.U.A., Oda, Y., Takayama, Y., Yokota, K., Furuta, A. and … Show more authors

Coastal Engineering Journal 54 ( 1 ) 2012 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Nationwide post event survey and analysis of the 2011 Tohoku earthquake tsunami

Mori, N., Takahashi, T. and The 2011 Tohoku Earthquake Tsunami Joint Survey Group

Coastal Engineering Journal 54 ( 1 ) 1 - 27 2012 [Reviewed]

An Improved Model for Short-Term Beach Profile Change Focusing on Berm Formation and Erosion

Language：English Publishing type：Research paper (scientific journal) Joint Work

Field investigation of size distribution of suspended sediment using LISST-100

Y.Kuriyama, T. Suzuki, S. Yanagishima, K. Uzaki, Y. Ishino , H. Sakamoto

Proceedings of the 33rd International Conference on Coastal Engineering (ICCE 2012) 121 2012 [Reviewed]

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Hindcast of Storm Surge and Current due to Typhoon Melor in 2009

Ninomiya, J., N. Mori, N. Kihara, T. Suzuki, T. Yasuda and H. Mase

International Conference on Disaster Management 2012

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

ISOZAKI Satoshi,SUZUKI Takayuki,SASAKI Jun

Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 68 ( 2 ) l_536 - l_540 2012 [Reviewed]

Characteristics of 2011 Tohoku Tsunami and Resultant Damage in Tokyo Bay

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

A short-term swash zone beach profile change model proposed by Suzuki and Kuriyama (2009) focusing on berm formation and erosion was improved using the distribution curves of cross-shore sediment transport rates for berm formation and erosion determined by the slope of the curves at the inflection points. The improved model was applied to the calculation of three months beach profile change, which results were compared with field data and the computational results of Suzuki and Kuriyama (2009). The present model was found to well predict not only the shoreline change but also the beach profile change, including the berm formation and erosion, compared to the model by Suzuki and Kuriyama (2009).

Other Link： https://www.jstage.jst.go.jp/article/kaigan/68/2/68_I_536/_article/-char/ja/

SASAKI Jun,ITO Kazunori,SUZUKI Takayuki,Retno Utami Agung WIYONO,ODA Yukinobu,TAKAYAMA Yuriko,HASUM … Show more authors

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 68 ( 2 ) I_261 - I_265 2012 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Society of Civil Engineers Joint Work

Other Link： https://www.jstage.jst.go.jp/article/kaigan/68/2/68_I_261/_article/-char/ja/

2011年東北津波による東京湾への影響

佐々木淳, 伊藤一教, 鈴木崇之, WIYONO Retno Utami Agung, 織田幸伸, 高山百合子, 横田華奈子, 古田敦史, 高木泰士

日本沿岸域学会研究討論会講演概要集 25 2012

Language：Japanese Publishing type：Research paper (other science council materials etc.) Joint Work

Nationwaide field survey of the 2011 off the Pacific coast of Tohoku earthquake tsunami

The 2011 Tohoku earthquake tsunami joint survey group

Jorunal of JSCE, Ser. B2(Coastal Eng.) 67 ( 1 ) 63 - 66 2011 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

2011年東北地方太平洋沖地震津波に関する合同現地調査の報告

東北地方太平洋沖地震津波合同調査グループ

津波工学研究報告 28 129 - 133 2011

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

波浪音を用いた波高の推定

鈴木崇之，今西由希路，佐々木淳，坂本光

土木学会論文集B2（海岸工学） 67 1346 - 1350 2011 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：土木学会 Joint Work

粒径別の底質浮遊特性に関する現地観測

栗山善昭，鈴木崇之，柳嶋慎一，鵜﨑賢一，石野芳夫，坂本光

土木学会論文集B2（海岸工学） 67 476 - 480 2011 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：土木学会 Joint Work

相模湖における発電放流を利用したアオコ抑制手法に関する検討

佐々木淳，中村元哉，鈴木崇之

土木学会論文集B2（海岸工学） 67 906 - 910 2011 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：土木学会 Joint Work

沿岸域における強風時の強鉛直混合についての数値計算

森信人，田中悠祐，間瀬肇，鈴木崇之，木原直人

土木学会論文集B2（海岸工学） 67 321 - 325 2011 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：土木学会 Joint Work

うねりと発達中の風波が混在する湾内における大気・海洋間運動量輸送

木原直人，中屋耕，坪野考樹，松山昌史，平口博丸，森信人，鈴木崇之，武藤裕則

土木学会論文集B2（海岸工学） 67 51 - 55 2011 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：土木学会 Joint Work

汀線位置変動に及ぼす周波数別波浪および前浜形状の影響

鈴木崇之

土木学会論文集B3（海洋開発） 27 1093 - 1098 2011 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：土木学会 Single Work

スリランカ・キリンダ漁港における南西・北東モンスーンによる土砂堆積変動の把握

佐々木淳，Laknath D P C，鈴木崇之

土木学会論文集B3（海洋開発） 27 1141 - 1146 2011 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：土木学会 Joint Work

Spatio-temporal characteristics of near-bed pressure gradients on a barred beach

Suzuki,T., Shin, S., Cox, D.T. and Mori, N.

Journal of Waterway, Port, Coastal, and Ocean Engineering 136 ( 6 ) 327 - 336 2010.11 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

Meteorological and oceanographic variables observed at Tanabe-bay, Wakayama

Suzuki, T., Kubo, T. and Muto, Y.

Proc. of Int. Sym. Water and Sediment Disasters in East Asia 161 - 167 2010.3

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Short-term swash zone beach profile change model focusing on berm formation and erosion

Suzuki, T. and Kuriyama, Y.

Proc. 32nd Int. Conf. Coastal Eng. sediment.31 2010

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

振子型フロートを用いた沿岸流速の連続観測

鈴木崇之，坂本光，栗山善昭

土木学会論文集B 66 ( 1 ) 87 - 92 2010 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

海洋表層鉛直混合におよぼす風応力と波浪の影響

森信人，鈴木崇之，木原直人

土木学会論文集B2（海岸工学） 66 ( 1 ) 311 - 315 2010 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

バームの形成侵食に着目した短期地形変化モデル

鈴木崇之，栗山善昭

土木学会論文集B2 56 576 - 580 2009.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Characteristics of medium-term shoreline change at Hasaki coast

Suzuki, T. and Kuriyama, Y.

International Workshop on Erosion and Its Adaptation (IWEA) 35 - 44 2009.10

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

Statistical modeling of near-bed pressure gradients measured on a natural beach

Suzuki, T., Mori, N. and Cox, D.T.

Coastal Engineering Journal 51 ( 2 ) 101 - 121 2009 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

バーム形成・侵食時の岸沖漂砂量分布の簡易モデル

鈴木崇之，栗山善昭

土木学会海岸工学論文集 55 471 - 475 2008.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：土木学会 Joint Work

Simple model of cross-shore sediment transport rate for berm formation and erosion

Suzuki, T. and Kuriyama, Y.

Proc. 31st Int. Conf. Coastal Eng. 1762 - 1773 2008

Language：English Publishing type：Research paper (international conference proceedings) Joint Work

汀線位置の長周期変動に対する汀線変化量と波浪エネルギーおよび沿岸流速との関係

鈴木崇之，栗山善昭

土木学会論文集B 64 ( 4 ) 280 - 290 2008 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Statistical modeling of pressure gradients on a barred beach

Suzuki,T., Shin, S., Mori, N. and Cox, D.T.

Coastal Engineering Journal 50 ( 2 ) 123 - 142 2008 [Reviewed]

Language：English Publishing type：Research paper (scientific journal) Joint Work

バーム形成時および侵食時における岸沖漂砂量分布特性

鈴木崇之，竹内麻衣子，友田尚貴，山口里実，栗山善昭

土木学会海岸工学論文集 55 471 - 475 2007.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

バー地形における底面上圧力勾配の岸沖分布特性の把握とその統計的モデル化

鈴木崇之，Sungwon Shin，Daniel T. Cox，森信人

土木学会海岸工学論文集 54 86 - 90 2007.11 [Reviewed]

Language：Japanese Publishing type：Research paper (scientific journal) Joint Work

Coastal changes due to sediment transport on long and short time scales

Indo-Japan Workshop on Coastal Problems and Mitigation Measures - Including the Effects of Tsunami- 184 - 193 2007.7

Language：English Publishing type：Research paper (international conference proceedings) Single Work

A numerical study of intermittent sediment concentration under breaking waves in the surf zone

Suzuki, T., Okayasu, A. and Shibayama, T.

Coastal Engineering 54 433 - 444 2007 [Reviewed]