Updated on 2022/05/25

写真a

 
UEDA, Takumi
 
Affiliation
Faculty of Science and Engineering, School of Creative Science and Engineering
Job title
Associate Professor

Research Institute

  • 2020
    -
    2022

    理工学術院総合研究所   兼任研究員

Education

  •  
    -
    2007

    University of Utah   College of Mines and Earth Science   Department of Geology and Geophysics  

  •  
    -
    2002

    Waseda University  

  •  
    -
    2000

    Waseda University   School of Science and Engineering  

Degree

  • University of Utah   Ph.D. (Geophysics)

  • 早稲田大学   修士(工学)

Research Experience

  • 2017.04
    -
    Now

    Waseda University Faculty of Science and Engineering

  • 2016.04
    -
    2017.03

    National Institute of Advanced Industrial Science and Technology

  • 2015.04
    -
    2016.03

    National Institute of Advanced Industrial Science and Technology

  • 2007.04
    -
    2015.03

    National Institute of Advanced Industrial Science and Technology

  • 2002.08
    -
    2007.03

    University of Utah   Dept. of Geology and Geophysics

Professional Memberships

  •  
     
     

    日本計算工学会

  •  
     
     

    Society of Exploration Geophysicists

  •  
     
     

    物理探査学会

 

Research Areas

  • Applied mathematics and statistics   Inverse problem, inversion

  • Solid earth sciences

  • Earth resource engineering, Energy sciences   Exploration Geophysics, Electromagnetic exploration, Electric exploration

Research Interests

  • Exploration Geophysics

  • Electromagnetic exploration

  • Electric exploration

  • Inverse problem

  • Applied Geophysics

  • geophysics

  • Deep Learning

▼display all

Papers

  • Three lines of evidence: Using geophysical approaches, geochemical approaches, and visual observation to assess potential leakage of mine water from tailing storage facility of a gold mine in Thailand

    Tanapon Phenrat*, Yuji Mitsuhata, Takumi Ueda, Yoshishige Kawabe, Yoshiaki Karino, Hideyuki Sato, Warakorn Maneechuket, Thitiporn Pladboon, Sirinart Laoharojanaphand, Kiattipong Khamdee

    Symposium on the Application of Geophysics to Engineering and Environmental Problems 2021    2021.06

    DOI

  • Development of a drone-borne electromagnetic survey system for searching for buried vehicles and soil resistivity mapping

    Yuji Mitsuhata, Takumi Ueda, Akiya Kamimura, Shin Kato, Atsushi Takeuchi, Chikara Aduma, Toshiyuki Yokota

    Near Surface Geophysics    2021

     View Summary

    We developed a drone-borne electromagnetic survey system using a commercial multi-frequency electromagnetic sensor equipped with a GPS receiver, a WiFi serial transceiver, and an ultrasonic distance sensor to measure the height of the electromagnetic sensor above the ground surface. The electromagnetic sensor was suspended from a drone with ropes. The distance between the drone and the electromagnetic sensor was adjusted to minimize the influence of electromagnetic noise generated by the drone, and to stabilize the electromagnetic sensor during flight. The system was tested at two experimental sites. The first site consisted of two buried vehicles to simulate a landslide. We assumed a scenario in which the search for the buried vehicles was urgent and accessibility to the area was limited. The second site consisted of wet and dry agricultural fields to test resistivity mapping. In the first test, we used the in-phase component of the measured data to locate the vehicles. The shallower vehicle was identified clearly, while the deeper vehicle was located successfully, albeit less easily. In the second test, the quadrature component was used for one-dimensional inversion after data processing, which included data smoothing, resampling and bias noise correction. The bias noise was measured while hovering the drone at a high altitude to negate the influence of ground conductivity. The results showed that the resistivity distributions could be mapped at some depths by using a five-frequency-processed quadrature component, and clearly showed the difference between the wet and dry fields. The crucial parameter in the evaluations of these targets was the height of the electromagnetic sensor above the ground surface, which was measured continuously during flight. The results demonstrated the potential of the survey system to search for buried metal objects and for shallow subsurface resistivity mapping over relatively large areas.

    DOI

  • Three-dimensional electromagnetic holographic imaging in active monitoring of sea-bottom geoelectrical structures

    Michael S. Zhdanov, Martin Ćuma, Takumi Ueda

    Active Geophysical Monitoring     269 - 294  2020

    DOI

  • Petrophysical measurement for data interpretation of magnetic survey - an example of the Musadake geothermal area, Hokkaido, Japan -

    杉野由樹, 上田匠, 大熊茂雄, 石塚吉浩, 宮川歩夢

    物理探査(Web)   73  2020

    J-GLOBAL

  • Sub-seafloor resistivity sensing using a vertical electrode configuration

    Takumi Ueda, Yuji Mitsuhata, Motoharu Jinguji, Hisatoshi Baba

    EARTH PLANETS AND SPACE   66  2014.05  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    There is growing interest in marine direct current (DC) resistivity methods for sub-seafloor exploration of a broad range of geophysical and geological targets. To address this, we have developed a new marine DC method with a vertical electrode configuration (VEC). Compared to conventional marine DC methods that use a horizontal electrode configuration, the shape and position of our VEC cable can be controlled relatively easily. Therefore, the VEC is suitable for operations in regions of steep bathymetry and for expeditious sub-seafloor resistivity exploration. In this study, we introduce a water-resistant electrode array cable and an onshore multichannel DC measurement system for stable and rapid data acquisition. To evaluate the performance and efficiency of the new system, we conducted field experiments in the shallow water zone at Shimizu Port, Suruga Bay, Japan. In order to quantitatively analyze the VEC-DC data, we adopt a 1-D numerical modeling code that computes the electric potential and apparent resistivity generated by a point and dipole current source used in the VEC-DC measurement. These can be placed at any position with an arbitrary electrode configuration in a multilayered space, including seawater and sub-seafloor layers. We also develop an inversion code for the VEC-DC data based on a simulated annealing (SA) optimization and applied this to the field data. The observed data is of sufficiently good quality to be used for inversion, and the SA result demonstrates that the proposed VEC-DC system is able to estimate the sub-seafloor resistivity structure.

    DOI

  • A new marine magnetotelluric measurement system in a shallow-water environment for hydrogeological study

    Takumi Ueda, Yuji Mitsuhata, Toshihiro Uchida, Atsunao Marui, Kenji Ohsawa

    JOURNAL OF APPLIED GEOPHYSICS   100   23 - 31  2014.01  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    We have developed a new marine magnetotelluric (MT) measurement system that can reduce noises caused by sea wave motions and can be applied to measurements under very shallow seawater areas, such as a coastal region with a sea depth of 10 to 100 m. The difficulties of geophysical exploration in shallow water and coastal areas include (1) fishery activity, (2) limitations of survey vessel size, and (3) motion noise caused by sea waves. In order to overcome these difficulties, we selected a MT method that uses natural EM fields without transmitting an electric current in seawater, which enables the method to be used in areas with active inshore fisheries. In addition, the developed marine MT system is very short, which reduces motion generated by sea waves, and compact, which enables light-draft small survey boat operation. We conducted offshore data acquisition using a new MT measurement system and an onshore MT survey at the Horonobe coastal area, Hokkaido, Japan. High-quality data were successfully obtained in both onshore and offshore field surveys. Two-dimensional (2D) inversion for field data from onshore to sea bottom reveals that a quaternary sedimentary layer of a few hundred meters in thickness, which was determined by well logging to be a freshwater layer, extends horizontally offshore for several kilometers under the sea. The results obtained herein demonstrate that the newly developed marine MT measurement system can be used to clarify the geoelectrical structures of brackish/fresh groundwater distributions and in coastal areas. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.

    DOI

  • Seismic reflection surveys at Horonobe coastal land area

    横田俊之, 稲崎富士, 溝畑茂治, 内田利弘, 上田匠

    物理探査   65 ( 3 )  2012

    J-GLOBAL

  • Direct current electric potentials for a multilayered earth with arbitrary electrode configurations-Derivation of theoretical recurrence formulas for a point current source excitation-

    光畑裕司, 上田匠

    物理探査   63 ( 2 )  2010

    J-GLOBAL

  • Direct current electric potentials for a multilayered earth with arbitrary electrode configurations-Numerical methods and simulation of marine resistivity exploration-

    上田匠, 光畑裕司, 内田利弘

    物理探査   63 ( 3 )  2010

    J-GLOBAL

  • 3D electromagnetic holographic imaging in active monitoring of sea-bottom geoelectrical structures

    Zhdanov, Michael S., Cuma, Martin, Ueda, Takumi

    Handbook of Geophysical Exploration: Seismic Exploration   40 ( C ) 325 - 350  2010  [Refereed]

    DOI J-GLOBAL

  • 3D finite difference forward modeling of magnetoterrulic method using the library of iterative solvers for linear systems, Lis

    上田匠, 内田利弘

    日本計算工学会論文集(Web)   2009  2009

    J-GLOBAL

  • Marine CSEM inversion based on the regularized conjugate gradient method and EM migration

    上田匠, ZHDANOV Michael S.

    物理探査   62 ( 3 )  2009

    J-GLOBAL

  • Fast numerical methods for marine controlled-source electromagnetic (EM) survey data based on multigrid quasi-linear approximation and iterative EM migration

    Takumi Ueda, Michael S. Zhdanov

    EXPLORATION GEOPHYSICS   39 ( 1 ) 60 - 67  2008.03

    Authorship:Lead author

     View Summary

    In this paper we consider an application of the method of electromagnetic ( EM) migration to the interpretation of a typical marine controlled-source (MCSEM) survey consisting of a set of sea-bottom receivers and a moving electrical bipole transmitter. Three-dimensional interpretation of MCSEM data is a very challenging problem because of the enormous number of computations required in the case of the multi-transmitter and multi-receiver data acquisition systems used in these surveys. At the same time, we demonstrate that the MCSEM surveys with their dense system of transmitters and receivers are extremely well suited for application of the migration method. In order to speed up the computation of the migration field, we apply a fast form of integral equation (IE) solution based on the multigrid quasi-linear (MGQL) approximation which we have developed. The principles of migration imaging formulated in this paper are tested on a typical model of a sea-bottom petroleum reservoir.

    DOI

  • Sharp boundary inversion in crosswell travel-time tomography

    M. S. Zhdanov, G. Vignoli, T. Ueda

    JOURNAL OF GEOPHYSICS AND ENGINEERING   3 ( 2 ) 122 - 134  2006.06

     View Summary

    The reconstruction of seismic images of the medium from crosswell travel-time data is a typical example of the ill-posed inverse problem. In order to obtain a stable solution and to replace an ill-posed problem by a well-posed one, a stabilizing functional ( stabilizer) has to be introduced. The role of this functional is to select the desired stable solution from a class of solutions with specific physical and/or geometrical properties. One of these properties is the existence of sharp boundaries separating rocks with different petrophysical parameters, e. g., oil- and water-saturated reservoirs. In this paper, we develop a new tomographic method based on application of a minimum support stabilizer to the crosswell travel-time inverse problem. This stabilizer makes it possible to produce clear and focused images of geological targets with sharp boundaries. We demonstrate that the minimum support stabilizer allows a correct recovery of not only the shape but also the velocity value of the target. We also point out that this stabilizer provides good results even with a low ray density, when the traditional minimum norm stabilizer fails.

    DOI

  • Fast numerical modeling of multitransmitter electromagnetic data using multigrid quasi-linear approximation

    Takumi Ueda, Michael S. Zhdanov

    IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING   44 ( 6 ) 1428 - 1434  2006.06

     View Summary

    Multitransmitter electromagnetic (EM) surveys are widely used in remote-sensing and geophysical exploration. The interpretation of the multitransmitter geophysical data requires numerous three-dimensional (3-D) modelings of the responses of the receivers for different geoelectrical models of complex geological formations. In this paper, we introduce a fast method for 3-D modeling of EM data, based on a modified version of quasilinear approximation, which uses a multigrid approach. This method significantly speeds up the modeling of multitransmitter-multireceiver surveys. The developed algorithm has been applied for the interpretation of marine controlled-source electromagnetic (MCSEM) data. We have tested our new method using synthetic problems and for the simulation of MCSEM data for a geoelectrical model of a Gemini salt body.

    DOI CiNii

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Misc

  • Development of electromagnetic response calculation program in horizontally layered earth with arbitrary transmitter/receiver deployment and transmitting current waveform.

    桑井康行, 河合将人, 宅間晴史, 岡田拓己, 上田匠, 中島崇裕

    物理探査学会学術講演会講演論文集   144th  2021

    J-GLOBAL

  • 1D deep learning inversion of frequency domain airborne electromagnetic method

    松本侑也, 上田匠

    物理探査学会学術講演会講演論文集   144th  2021

    J-GLOBAL

  • Measurement of rock properties for gravity and magnetic data analysis-an example of Musadake area, Hokkaido, Japan-

    杉野由樹, 杉野由樹, 上田匠, 大熊茂雄

    物理探査学会学術講演会講演論文集   141st  2019

    J-GLOBAL

  • A case study of the corrosion risk of industrial water pipeline by investigation of soil using high-frequency AC resistivity measurement

    万沢かりん, 上田匠, 神宮司元治, 横田俊之

    物理探査学会学術講演会講演論文集   140th  2019

    J-GLOBAL

  • Data generation by FDTD Method simulator and their availability for deep learning in the Ground Penetrating Radar Method

    山下奨平, 磯真一郎, 上田匠

    物理探査学会学術講演会講演論文集   140th  2019

    J-GLOBAL

  • Development of 1D forward modeling for electromagnetic method with Python

    松本侑也, 上田匠

    物理探査学会学術講演会講演論文集   140th  2019

    J-GLOBAL

  • Characteristics of frequency domain electromagnetic survey data using an unmanned ground vehicle

    佐竹海, 万沢かりん, 上田匠, 神宮司元治, 横田俊之, 小森省吾

    物理探査学会学術講演会講演論文集   140th  2019

    J-GLOBAL

  • Development of drone-assisted electromagnetic prospecting system for automobiles buried by landslides

    Y. Mitsuhata, T. Ueda, A. Kamimura, S. Kato, A. Takeuchi, C. Aduma

    24th European Meeting of Environmental and Engineering Geophysics    2018.09

     View Summary

    We have developed an electromagnetic prospecting system using a drone for searching for automobiles buried by a landslide. The system consists of an drone, an 1.6 m long electromagnetic (EM) sensor with a GPS receiver, an ultrasonic distance sensor for monitoring the height of EM sensor from the ground surface and a WiFi serial transceiver for controlling the EM sensor and monitoring the measured data. The drone suspends the EM sensor and EM data are acquired during the flight. The distance of drone-sensor separation is crucial to avoid EM noise caused from the drone motors and to stabilize the flight of drone On the basis of field experiments, we adopted a separation of 4 m and attached a vertical tail to the aft end of EM sensor witch can stabilize the flight at a speed of at least 2 m/s. The height of EM sensor should be monitored because it affects the EM data significantly. We have tested the system at an experiment site where there are two cars embedded at depths of 1.5 m and 3 m respectively. The close-area search clearly indicated the location of the shallow car, and there was a slight indication of the deep car.

    DOI

  • 小型無人航空機(UAV/ドローン)による周波数領域電磁探査法の開発

    上田匠, 上田匠, 光畑裕司, 加藤晋, 神村明哉, 谷村和彦, 伊豆智幸, 植田大造, 藤井純一郎

    物理探査学会学術講演会講演論文集   136th  2017

    J-GLOBAL

  • 小型無人航空機(UAV/ドローン)を用いた周波数領域空中電磁探査法システムの開発

    上田匠, 光畑裕司, 加藤晋, 神村明哉, 谷村和彦, 伊豆智幸, 植田大造, 藤井純一郎

    日本地球惑星科学連合大会予稿集(Web)   2017  2017

    J-GLOBAL

  • 災害調査用地上/空中複合型ロボットシステムの開発

    加藤晋, 神村明哉, 光畑裕司, 上田匠, 渡辺顕司, 有隅仁, 皿田滋, 竹内厚司, 東千加良, 野宮和洋, 鎌田瑞生, 鎌田瑞生, 伊豆智幸, 斉藤昇, 丸山賢太郎, 後藤宏二, 植田大造, 藤井純一郎, 藤田将史, 谷村和彦

    日本ロボット学会学術講演会予稿集(CD-ROM)   34th  2016

    J-GLOBAL

  • 秋田県小坂地域でのSIP法実証試験

    高倉伸一, 上田匠, 光畑裕司, 杉崎真幸, 本居正幸

    物理探査学会学術講演会講演論文集   132nd  2015

    J-GLOBAL

  • 海洋電磁探査による上越沖表層メタンハイドレート分布調査

    光畑裕司, 上田匠, 森田澄人, 棚橋学

    日本地球惑星科学連合大会予稿集(Web)   2015  2015

    J-GLOBAL

  • 仙台平野南部太平洋沿岸地域における電気・電磁探査法調査

    上田匠, 大熊茂雄, 神宮司元治, 井川怜欧, 光畑裕司, 内田利弘, 丸井敦尚, 石川秀浩

    物理探査学会学術講演会講演論文集   130th  2014

    J-GLOBAL

  • 鉛直型電極配置による海底電気探査法の開発

    上田匠, 神宮司元治, 光畑裕司, 馬塲久紀

    物理探査学会学術講演会講演論文集   128th  2013

    J-GLOBAL

  • 福島県いわき市での緊急災害調査-CSAMT法による湯ノ岳・藤原断層近傍の地下構造-

    鈴木浩一, 内田利弘, 相澤隆生, 狩野嘉昭, 佐々木吾郎, 田上正義, 窪田健二, 上田匠, 真田佳典, 内田真人, 鈴木敬一, 岸本宗丸, 濱友紀, 谷口友規

    物理探査学会学術講演会講演論文集   125th  2011

    J-GLOBAL

  • 幌延沿岸域における反射法地震探査

    横田俊之, 稲崎富士, 溝畑茂治, 内田利弘, 上田匠

    物理探査学会学術講演会講演論文集   122nd  2010

    J-GLOBAL

  • 沿岸域MT法における2次元解析の検討と幌延沿岸域データへの適用

    上田匠, 内田利弘, 光畑裕司

    物理探査学会学術講演会講演論文集   122nd  2010

    J-GLOBAL

  • 浅海電磁探査システムの改良・動作試験と幌延沿岸域における予備実験

    大澤健二, 光畑裕司, 上田匠, 内田利弘, 佐波瑞恵, 佐藤龍也

    物理探査学会学術講演会講演論文集   122nd  2010

    J-GLOBAL

  • 海底鉱物資源を対象とした接地型電磁探査法の検討

    石川秀浩, 渡辺英久, 光畑裕司, 上田匠, 内田利弘, 馬塲久紀

    物理探査学会学術講演会講演論文集   123rd  2010

    J-GLOBAL

  • 海域・沿岸域における電気探査法適用のための任意配置電極対応1次元数値計算手法

    上田匠, 光畑裕司, 内田利弘

    物理探査学会学術講演会講演論文集   120th  2009

    J-GLOBAL

  • 電磁マッピング物理探査技術の油汚染土壌調査への適用研究

    光畑裕司, 安藤大, 上田匠, 今里武彦, 高木一成, 佐藤秀之

    地下水・土壌汚染とその防止対策に関する研究集会講演集(CD-ROM)   15th  2009

    J-GLOBAL

  • 三次元地中レーダによる河川堤防周辺の地下水探査-埼玉県荒川における適用例-

    横田俊之, 稲崎富士, 品川俊介, 上田匠

    物理探査学会学術講演会講演論文集   118th  2008

    J-GLOBAL

  • 海洋石油資源探査における人工信号源電磁探査法の概要

    上田匠

    地質ニュース   ( 644 )  2008

    J-GLOBAL

  • 電磁探査法による海底石油ガス資源探査の概要

    上田匠, ZHDANOV Michael S.

    資源・素材   2008 ( A/B/E )  2008

    J-GLOBAL

  • 埼玉県荒川河川堤防周辺の地下水探査-三次元地中レーダを用いた探査例-

    横田俊之, 稲崎富士, 品川俊介, 上田匠, 光畑裕司

    日本地下水学会講演会講演要旨   2008  2008

    J-GLOBAL

  • 海洋および沿岸域における電気・電磁探査法適用に向けた数値モデリング技術の開発

    上田匠, 光畑裕司, 内田利弘

    物理探査学会学術講演会講演論文集   119th  2008

    J-GLOBAL

  • 幌延沿岸域における物理探査プロジェクトの概要

    内田利弘, 光畑裕司, 上田匠, 安藤誠, 丸井敦尚, 楠瀬勤一郎

    物理探査学会学術講演会講演論文集   118th  2008

    J-GLOBAL

  • Numerical analysis of marine CSEM method (1) : 3D forward modeling based on the integral equation method and linear approximations

    UEDA Takumi, ZHDANOV Michael S.

      116   207 - 210  2007.05

    CiNii J-GLOBAL

  • Overview of numerical analysis of the marine CSEM method (2) : 3D marine CSEM inversion based on the integral equation method

    UEDA Takumi, ZHDANOV Michael S.

      116   211 - 214  2007.05

    CiNii J-GLOBAL

  • 電気・電磁探査法数値解析における連立方程式数値解法の基礎研究

    上田匠

    物理探査学会学術講演会講演論文集   117th  2007

    J-GLOBAL

  • Study on the Characteristics of Time-Domain Electromagnetic Responses.

    NOGUCHI Koji, UEDA Takumi, WANG Zhenyang

      104   259 - 263  2001.05

    CiNii

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Research Projects

Specific Research

  • ドローンを用いた次世代電磁探査法システムの基礎数値シミュレーション

    2017  

     View Summary

    ドローン(無人小型航空機)を用いた地下探査(電磁探査)手法の開発の一環として、ドローン吊り下げ型電磁探査法の測定データを数値計算により予測・計算するためのプログラムの開発、整備及び基礎的なシミュレーションを実施した。一般的な探査は陸上(地表)に送受信装置を配置して測定を行うため、従来の計算手法ではドローンからの測定を正確に計算できない、あるいは計算可能なプログラムの理論、実装が不明確であるなどの問題があった。本研究で、空中からの電磁場計測を想定した計算プログラムの開発を行い、ドローン電磁探査を想定した予測応答の計算を可能とし、システム開発ための基本となる探査仕様(送受信コイルサイズ、周波数、飛行高度など)の情報を得ることができた。

 

Syllabus

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