MITSUHATA YUJI
Comment
Explore the Earth and our future.
Organization
Faculty of Engineering Department of Earth Resources Engineering Professor
School of Engineering
（Concurrent）
Graduate School of Engineering Department of Cooperative Program for Resources Engineering（Concurrent）
Graduate School of Engineering Department of Earth Resources Engineering（Concurrent）
Title
Professor
Contact information
Tel
0928023330
Profile
"Geophysical exploration" is a technique that visualizes (images) the underground conditions—which cannot be directly seen with our eyes—by using various physical phenomena such as seismic waves, electromagnetic fields, magnetism, and gravity. Based on data acquired by various sensors on the ground, in the air, or in the sea, it images the subsurface and then we understand the subsurface features by integrating relevant scientific knowledge and information.
Geophysical exploration has evolved as a surveying technology for underground resources such as petroleum, natural gas, geothermal energy, and mineral resources. Today, it is also widely applied in fields such as infrastructure development and maintenance (e.g., tunnels and river embankments), underground environmental utilization (e.g., geological disposal of radioactive waste and CO₂ sequestration), environmental conservation (e.g., understanding groundwater distribution), and disaster prevention (e.g., investigations of faults and volcanic activity).
In recent years, it has also become possible to monitor dynamic changes such as the movement of subsurface fluids. Toward building a sustainable society, we are addressing various social challenges related to the subsurface and advancing the research and development of geophysical exploration technologies necessary for solving each of these challenges.
External link
ORCID
Research Areas
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Energy Engineering / Earth resource engineering, Energy sciences
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Natural Science / Solid earth sciences
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Natural Science / Human geosciences
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Environmental Science/Agriculture Science / Environmental impact assessment
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Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Geotechnical engineering
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Energy Engineering / Earth resource engineering, Energy sciences
Degree
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Doctor of Science （ 2003.3 Hokkaido University ）
Research History
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Geological Survey of Japan 地殻物理部 通商産業技官
1990.4 - 1994.3
Country：Japan
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Japan National Oil Corporation, Technology Research Center Exploration Geophysics Research Group Researcher
1990.4 - 1997.3
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Geological Survey of Japan 地殻物理部 通商産業技官
1997.4 - 2000.1
Country：Japan
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The University of British Columbia Department of Earth, Ocean, and Atmospheric Sciences Visiting Researcher
2000.2 - 2002.1
Country：Canada
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National Institute of Advanced Industrial Science and Technology (AIST) GSJ, Research Institute for Geo-Resources and Environment（GREEN） 主任研究員
2002.1 - 2010.3
Country：Japan
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National Institute of Advanced Industrial Science and Technology (AIST) イノベーション推進室 （兼務）地質分野研究企画室 総括企画主幹 （兼務）地質分野研究企画室長
2010.4 - 2012.3
Country：Japan
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National Institute of Advanced Industrial Science and Technology (AIST) GSJ, Department of Earth, Ocean, and Atmospheric Sciences Deputy Director, (Concurrent post) Group Leader of Exploration Geophysics Group
2012.4 - 2017.3
Country：Japan
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National Institute of Advanced Industrial Science and Technology (AIST) GSJ, Research Institute for Geo-Resources and Environment（GREEN） Director
2017.4 - 2021.3
Country：Japan
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National Institute of Advanced Industrial Science and Technology (AIST) Research Strategy Planning Department （Concurrent post）Geological Survey of Japan Deputy Director（Concurrent post) Deputy Director General
2021.4 - 2023.3
Country：Japan
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National Institute of Advanced Industrial Science and Technology (AIST) Planning Headquarters, （Concurrent post）General Affairs Headquarters, Research Strategy Planning Department Deputy Director General ，（Concurrent post) Senior Deputy Director
2023.4 - 2025.3
Country：Japan
Education
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Kyushu University Faculty of Engineering Mining
1984.4 - 1988.3
Country：Japan
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Kyushu University Graduate School of Engineering Mining
1988.4 - 1990.3
Research Interests・Research Keywords
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Research theme： 電磁気探査
Keyword： 電磁気探査
Research period： 2025
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Research theme： 電気探査
Keyword： 電気探査
Research period： 2025
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Research theme： 逆解析
Keyword： 逆解析
Research period： 2025
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Research theme： 物理探査
Keyword： 物理探査
Research period： 2025
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Research theme： インバージョン
Keyword： インバージョン
Research period： 2025
Papers
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GEOPHYSICS 2024.1
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Yuji Mitsuhata, Takumi Ueda, Akiya Kamimura, Shin Kato, Atsushi Takeuchi, Chikara Aduma, Toshiyuki Yokota
Near Surface Geophysics 20 ( 1 ) 16 - 29 2022.2 （ ISSN:1569-4445 ）
Works
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時間領域電磁探査法データの２次元解析に係る研究
2002
Educational Activities
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Undergraduate
Looking into the Earth
Exploration Geophysics
Graduate
Exploration Geophysics (Advanced) I
(Cooperative Program for Resources Engineering)
Earth and Space Exploration Engineering
Adviser to Graduation (Undergraduate) , Master's and Doctor's Research and Thesis
To improve students' fundamental academic skills in areas such as physical mathematics and to stimulate interest in geophysical exploration technologies, the lecture content related to geophysical exploration will be restructured in collaboration with the responsible faculty members. Specifically, for second-year undergraduate students, the curriculum will include case studies on the application of geophysical exploration techniques, vector analysis, and fundamentals of solid Earth geophysics. For third-year students, the curriculum will focus on individual geophysical exploration methods, Fourier transforms, and numerical modeling techniques.
For graduate students, including those enrolled in the Joint Graduate Program in Resources Engineering, lectures will cover the magnetotelluric (MT) method -one of the most widely used techniques for deep subsurface investigations such as geothermal resource exploration. The course will address the principles of the MT method, as well as data acquisition, processing, analysis, and interpretation.
Regarding supervision of undergraduate and graduate theses, weekly seminars will be held to check progress and provide guidance. In addition, individualized instruction will be given on the development of data analysis techniques for electrical and electromagnetic surveys, with the goal of presenting results at academic conferences. Furthermore, in the seminars, reading sessions of specialized texts on geophysical exploration will be conducted to foster a solid foundation of knowledge.
Class subject
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地球のイメージング
2025.12 - 2026.2 Winter quarter
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物理探査学
2025.5 - 2025.6 Spring quarter