Faculty of Urban Innovation, Division of Urban Innovation

Job Title


Date of Birth


Research Fields, Keywords

District Heating and Cooling, Cogeneration, Energy Saving, Heat Island, Geographic Information System (GIS), Information System for Risk Management and Emergency Response, Enviromental Friendly Community Design, Community Design with Shopping Distric

Mail Address

E-mail address

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Related SDGs



The Best Research Achievement in the last 5 years 【 display / non-display

Graduating School 【 display / non-display


    Waseda University   Faculty of Science and Engineering   Graduated

Graduate School 【 display / non-display


    Waseda University  Graduate School, Division of Science and Engineering  Constrcution Engineering  Doctor Course  Accomplished credits for doctoral program


    Waseda University  Graduate School, Division of Science and Engineering  Construction Engineering  Master Course  Completed

Degree 【 display / non-display

  • Doctor of Engineering -  Waseda University

  • Master of Engineering -  Waseda University

Campus Career 【 display / non-display

  • 2011.04

    Duty   Yokohama National UniversityFaculty of Urban Innovation   Division of Urban Innovation   Professor  

  • 2001.04

    Duty   Yokohama National UniversityResearch Institute of Environment and Information Sciences   Professor  

  • 2000.04

    Duty   Yokohama National UniversityGraduate School of Engineering   Professor  

  • 1996.04

    Duty   Yokohama National UniversityGraduate School of Engineering   Associate Professor  

  • 1994.04

    Duty   Yokohama National UniversitySchool of Engineering   Associate Professor  

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External Career 【 display / non-display

  • 2001.04

    Kanagawa University   Department of Engineering   Part-time Lecturer  

  • 1994.04

    Keio University   Part-time Lecturer  

  • 1985.04

    Waseda University   Faculty of Science Engineering   Research Assistant  

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Architectural environment/Equipment

  • Social systems engineering/Safety system


Research Career 【 display / non-display

  • Study on Low Carbon and Resilient City by constructing independent and detached Energy Systems.

    Project Year:  -   

  • Study on Geospatial Information for Urban Safety Planning.

    Project Year:  -   

  • Study on Construction of Integrated ICT Platform

    Project Year:  -   

  • Study on ICT Platform for Malti-Modal Smart Transportation Systems.

    Project Year:  -   

  • Study on Construction of Cities and Regions in Shrinking Era Making Use of Ecosystem Services

    Project Year:  -   

Books 【 display / non-display

  • Urban Science Encyclopedia

    (Part: Editor )

    shumpusha Publishing Co., Ltd.  2021.02

  • The Urban Climatic Map

    Yasunobu Ashie, Takahiro Tanaka, Satoru Sadohara and Shusuke Inachi (Part: Joint Work )

    Routledge  2015 ISBN: 9781849713764

  • SATOYAMA Revitalization

    (Part: Joint Work )

    2011.11 ISBN: 9784883402656


Papers 【 display / non-display

  • Analysis Method of Spatiotemporal Change in Rescue Activities That Contribute to Response Teams Management After an Earthquake

    Satoshi KINA, Keiko INAGAKI, Satoru SADOHARA and Harumi YASHIRO

      ( 38 )   1 - 10   2021.03  [Refereed]

    Joint Work

     View Summary

    In the case of a large-scale disaster, it is necessary to plan an appropriate rescue operation strategy according to the extent of damage in the disaster area, while the damage information is complicated. In this research, we proposed a method to the rescue activities by firefighters for the people trapped under collapsed buildings by the earthquake in order to contribute to the drafting of support plan in the rescue activities after the earthquake. As a result of the analysis, from a spatiotemporal perspective, the area where the public supporters are lacking became clear, and it was possible to select the emergency traffic route in the time zone important for lifesaving immediately after the earthquake.

  • Challenges to be Tackled in the Field of Architecture for Severe Flood Damage

    ( Architectural Institute of Japan )    95 - 100   2020.11

    Joint Work

  • Study on Flood Damage Countermeasures of Buildings Considering Recent Flooding

        101 - 108   2020.11

    Joint Work


    KINA Satoshi, INAGAKI Keiko, SADOHARA Satoru, YASHIRO Harumi

    Journal of Architecture and Planning (Transactions of AIJ) ( Architectural Institute of Japan )  ( 775 )   1955 - 1963   2020.09  [Refereed]

    Joint Work

     View Summary

    <p> In the past earthquake disasters, a large number of people trapped in collapsed buildings occurred, and prompt rescue operations were required to increase the survival rate. The occurrence of large-scale earthquakes in the future is a concern in the metropolitan area. For example, in the damage assumption by the Southern Tokyo In-land Earthquake, it is said that the maximum number of people expected to be trapped in collapsed buildings due to structural damage from shaking is about 72,000 in the total affected areas. Therefore, disaster mitigation measures according to the local situation are urgently needed. However, in many local governments, earthquake damage assumptions are limited to calculating the number of people who are trapped in collapsed buildings. In addition, qualitative discussions are central to status of rescue activities after an earthquake.</p><p> In this study, we evaluated the disaster mitigation effects of rescue activities that consider regional characteristics such as building and road conditions, locations of fire stations, and the number of firefighters in Yokohama City, Kanagawa Prefecture. In evaluation, we used indicators such as the time required for rescue operations and number of people rescued over time.</p><p> First, we proposed a method for evaluating the disaster mitigation effects of rescue activities based on regional characteristics. In this study, it was assumed that firefighters carried out rescue activities for those who are trapped in wooden or non-wooden collapsed buildings by shaking when the earthquake occurred at 5 am. The proposed evaluation method aims to be easily applicable to other local governments by utilizing the public data such as government statistics.</p><p> Next, we clarified how much time it takes to rescue people who are trapped in collapsed buildings using the proposed evaluation method. As a result, the difference in rescue completion time in each region was a maximum of 3.8 hours in the case of intensity of lower 6 on the Japanese scale (instrumental seismic intensity: 5.6), a maximum of 18.9 hours in the case of intensity of lower 6 (instrumental seismic intensity: 5.8), and a maximum of 63.8 hours in the case of intensity of upper 6 (instrumental seismic intensity: 6.0). Based on the above results, it became clear that as the seismic intensity increases, the difference in time required for rescue operations between regions tends to increase. In addition, when a large scale disaster, it was suggested that rescue teams are easily affected by road blockages when moving around the activity site in areas where there are many old earthquake-resistant wooden buildings and widely distributed.</p><p> The method proposed in this study is effective when comprehensively considering earthquake disaster countermeasures because it can evaluate the disaster reduction effects of structural measures such as repair of old buildings and non structural measure such as the arrangement of firefighters. Furthermore, the evaluation method can be expected to encourage local residents to understand earthquake disaster countermeasures such as the removal and repair of old buildings by local residents recognizing the current situation of regional characteristics in consideration of the rescue operation ability.</p>

    DOI CiNii


    KIM Kangmin, YOSHIDA Satoshi, SADOHARA Satoru

    Journal of Environmental Engineering (Transactions of AIJ) ( Architectural Institute of Japan )  85 ( 771 )   389 - 399   2020.05  [Refereed]

    Joint Work

     View Summary

    <p> District energy system is facing on the risk of climate change. IPCC alarmed that the mean temperature would be rise by up to 4 °C by the end of the 21st century if there is no effort to reduce greenhouse gas emission in the fourth report. Japanese government has published weather prediction data called "Database for Policy Decision-Making for Future Climate Change" (hereafter d4PDF) to be utilized for study regarding to global warming.</p><p> This study aims to predict the effect of CGS (cogeneration system) and thermal storage after a mean temperature increase of 4°C (hereafter 4°C-Rise) with d4PDF and ENEPRO21, focused on the DHC system of Minatomirai 21 Area (hereafter MM21). In order to carry out this, this study utilized the data of the predicted heating and cooling demand of MM21 Area from the previous study: "Analysis of Influence of Climate Change on Demand and System of Heating and Cooling Predicted by d4PDF". And the three scenarios were set up which were the Basic System Cases, the Thermal Storage Cases, and the CGS Cases.</p><p> As a result of simulation of the Basic System Cases, this study predicts what the amounts of annual primary energy consumption and CO2 emission will rise up 103.5%~103.8% and 103.7%~104.0% after 4°C-Rise. COP will increase from 0.98 to 1.01. The make-up water, the cooling water flow rate of cooling tower, and the waste heat will go up to 129.9%~132.0%, 162.3%~164.6%, and 163.5%~164.1% respectively. In average temperature, the effect of the thermal storage is that the amount of annual primary energy consumption and CO<sub>2</sub> emission decreases by 0.6% and COP increases by 0.01. The amount of make-up water, cooling water flow rate of cooling tower, and the waste heat decrease by 6.0%, 6.2%, and 7.0% respectively. In the temperature after 4°C-Rise, the primary energy will go down 0.8~1.2% and COP will go up 0.01~0.02. The amount of make-up water, cooling water flow rate of cooling tower, and waste heat will be reduced by 5.7%~7.5%, 5.3%~7.6%, and 6.2%~8.2%. In conclusion, the effect of thermal storage in the temperature after 4°C-Rise is greater than in average temperature. As an effect of CGS, the primary energy saving rates in the temperature of average year and the temperature after 4°C-Rise are 33.48% and 32.38%, based on theoretical electro-thermal ratio. Compared with the results of ENEPRO21 simulation, in the average temperature, CGS reduces the primary energy consumption by 20.4%. And COP rise by 0.24. The amount of CO<sub>2</sub> emission decreases by 22.3%. However, the amounts of make-up water waste heat increase by 16.4% and by 47.1%. In the temperature after 4°C-Rise, the effect of CGS is that the primary energy consumption will go down 20.8%. And COP will go up by 0.24. CO<sub>2</sub> emission will decrease by 22.7%. The amount of make-up water will grow by 8.4%. The amount of waste heat will increase by 31.8%. To sum up, the effects of CGS in the temperature of average year and the temperature after 4°C-Rise are predicted to be on a similar level.</p>

    DOI CiNii

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Review Papers 【 display / non-display

  • Problem of the Energy Aspect and Prospect in Urban Development Focusing Mainly on the Lower Carbon

    SADOHARA Satoru

      45 ( 4 ) 184 - 191   2016.04

    Introduction and explanation (scientific journal)   Single Work


  • The Present Status, Issues and Future Prospects of Urban Energy System

    Energy and resources ( The Society of Japan Energy and resources )  35 ( 3 ) 140 - 143   2014.05

    Introduction and explanation (scientific journal)   Single Work


  • Expectations from Architectural Earthquake Resistance

      1637   40 - 44   2012.10

    Introduction and explanation (commerce magazine)   Joint Work


  • Outline of the water resources GIS application, Arc Hydro, and case studies in the United States

    KAWASAKI Akiyuki,YOSHIDA Satoshi,SADOHARA Satoru

    Theory and Applications of GIS ( Geographic Information Systems Association )  15 ( 1 ) 29 - 37   2007.06  [Refereed]  [Invited]

    Introduction and explanation (others)   Joint Work

    DOI CiNii

  • An Introduction to Salton Sea Database Program (SSDP)

    YUKAWA Kyosuke,TANAKA Takahiro,YOSHIDA Satoshi,SADOHARA Satoru

    Theory and Applications of GIS ( Geographic Information Systems Association )  12 ( 1 ) 91 - 95   2004.07  [Refereed]  [Invited]

    Introduction and explanation (scientific journal)   Joint Work

    DOI CiNii

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Grant-in-Aid for Scientific Research 【 display / non-display

  • Grant-in-Aid for Challenging Research (Exploratory)

    Project Year: 2019.04  -  2021.03 

  • Grant-in-Aid for Scientific Research(A)

    Project Year: 2011.04  -  2014.03 

  • Grant-in-Aid for Scientific Research(B)

    Project Year: 2004.04  -  2007.03 

  • Grant-in-Aid for Exploratory Research

    Project Year: 2004.04  -  2006.03 

Other external funds procured 【 display / non-display

  • Area Management Platform for Super Smart City

    Offer organization: Japan Science and Technology Agency 

    Project Year: 2018.11  -  2020.03  Investigator(s): SADOHARA Satoru

     View Summary

    Using Yokohama Minatomirai 21 district as a target model, we will build a platform that can mount and visualize human flow data in threedimensional cyberspace, including attribute information such as position information and spatial functions. This platform has the capability of processing the cyber-physical systems (CPS) cycle of collection, accumulation, analysis, integration (service design), and execution using the collected human behavior and human flow data. By its function, we can scientifically grasp the actual condition and flow of human behavior and human flow, which is the main component of cities; convert it to big data; tackle difficult modeling; and utilize the results of the simulation. This platform will promote collaboration among diverse stakeholders to create new value through various human-centered services related to disaster prevention, mitigation, marketing, etc. Our research and development affirms the concept of the system architecture, the social and economic impact, and the implementation scenario of this platform.

Presentations 【 display / non-display

  • Evaluation of the natural environment of suburban housing estates and proposals for future utilization methods — For SAKONYAMA housing complex —

    KOUYAMA Kenta, SADOHARA Satoru, YOSIDA Satoshi , INAGAKI Keiko

    2021.09.07   Architectural Institute of Japan

  • A Study on designated shelters and distributed evacuation and sheltering for disaster during Covid-19 pandemic - A case study on Hodogaya Ward, Yokohama City

    NAKANO Shoki, INAGAKI Keiko, YOSHIDA Satoshi and SADOHARA Satoru

    2021.09.07   Architectural Institute of Japan

  • Survey of Supplying Power and Heat in Emergency Management among Customers - Community Energy System in Nihonbashi Muromachi Area -

    INAGAKI Keiko, YOSHIDA Satoshi, SADOHARA Satoru, KUNITOMO Osamu and NISHIDA Hiromich

    2021.09.07   Architectural Institute of Japan

  • Study on decentralized energy system of safe blocks in urban redevelopment Part2

    SAITO Ryota, YOSHIDA Satoshi ,SADOHARA Satoru

    2021.09.07   Architectural Institute of Japan

  • Study on survey on the facilities for temporary refuge and the power supply to preserve the function of the facilities -A case study of neighboring areas of Yokohama Station-

    Yuki Mizuno, Satoshi Yoshida Satoru Sadohara, Keiko Inagaki

    2021.09.07   Architectural Institute of Japan

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Preferred joint research theme 【 display / non-display

  • Study on Realization of Ecological Communities

  • Study on Energy System in Cities