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Multidisciplinary monitoring of preparation and generation of earthquakes at M2 sources in South African gold mines

Research Project

Project/Area Number 21224012
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Solid earth and planetary physics
Research InstitutionRitsumeikan University

Principal Investigator

OGASAWARA Hiroshi  立命館大学, 理工学部, 教授 (40213996)

Co-Investigator(Kenkyū-buntansha) NAKATANI Masao  東京大学, 地震研究所, 准教授 (90345174)
YABE Yasuo  東北大学, 理学研究科, 准教授 (30292197)
KAWAKATA Hironori  立命館大学, 理工学部, 教授 (80346056)
Co-Investigator(Renkei-kenkyūsha) ISHII Hiroshi  (公財)地震予知総合研究振興会, 東濃地震科学研究所, 所長 (30004386)
NAKAO Shigeru  鹿児島大学, 理学部, 准教授 (90237214)
OKUBO Makoto  (公財)地震予知総合研究振興会, 東濃地震科学研究所, 主任研究員 (50462940)
IDE Satoshi  東京大学, 理学研究科, 教授 (90292713)
IIO Yoshihisa  京都大学, 防災研究所, 教授 (50159547)
KANO Yasuyuki  京都大学, 防災研究所, 助教 (30447940)
KAME Nobuki  東京大学, 地震研究所, 准教授 (90304724)
SATOH Takashi  (独)産業技術総合研究所, 主任研究員 (90357161)
LEI Xinglin  (独)産業技術総合研究所, 主任研究員 (70358357)
KATO Aitaro  名古屋大学, 環境学研究科, 准教授 (20359201)
IGARASHI Toshihiro  東京大学, 地震研究所, 助教 (10334286)
IMANISHI Kazutoshi  (独)産業技術総合研究所, 研究員 (70356517)
MORIYA Hirokazu  東北大学, 工学研究科, 准教授 (60261591)
Project Period (FY) 2009-05-11 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥192,920,000 (Direct Cost: ¥148,400,000、Indirect Cost: ¥44,520,000)
Fiscal Year 2013: ¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2012: ¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2011: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2010: ¥70,330,000 (Direct Cost: ¥54,100,000、Indirect Cost: ¥16,230,000)
Fiscal Year 2009: ¥75,270,000 (Direct Cost: ¥57,900,000、Indirect Cost: ¥17,370,000)
Keywords南アフリカ金鉱山 / 誘発地震 / 至近距離観測 / 微小破壊 / 準静的ひずみ変化 / 動的破損過程 / 絶対応力 / 断層強度 / 準静的歪変化 / 鉱山地震 / 南アフリカ鉱山地震
Research Abstract

Drilling > 80 holes with a total length > 2.8 km in earthquake prone areas, conducted were multi-disciplinary studies at sites (at depths > 3km or with equivalent stress) at six South African gold mines in ever-larger scale. Microfracturing associated with a magnitude (M) 2 event as well as those in highly stressed rock mass at 1.0km depth at another mine were finely delineated and seismologically analyzed in ever-greater detail. A hole intersecting an M2 hypocenter allowed the constraint of stress. A technology was introduced that allowed to measure stress at ever-larger depths or in ever-larger magnitudes, which calibrated elastic stress modelling. Pre-seismic strain change was observed for a M0 event, which was one of the other outcomes that can be obtained only from our monitoring at the closest proximity of hypocenters.

Assessment Rating
Verification Result (Rating)

A

Report

(6 results)
  • 2014 Research Progress Assessment (Verification Result) ( PDF )
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (75 results)

All 2014 2013 2012 2011 2010 Other

All Journal Article (27 results) (of which Peer Reviewed: 20 results) Presentation (42 results) (of which Invited: 5 results) Remarks (6 results)

  • [Journal Article] BX CCBO in-situ stress measurements at earthquake prone areas in South African gold mines ? a summary of mini-workshop on 13 Feb 20142014

    • Author(s)
      Ogasawara, H., H. Kato, G. Hofmann, D. Roberts, P. Piper, T. Clements, A.K. Ward, Y. Yabe, H. Yilmaz, and R.J. Durrheim
    • Journal Title

      Proceedings of ARMA2014 (Minesota University, Minneapolis)

      Volume: (CD-ROM) Pages: 11-11

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] In situ stress measurement at earthquake prone areas in South African gold mines2014

    • Author(s)
      Ogasawara, H., H. Kato, G. Hofmann, D. Roberts, T. Clements, P. Piper, and Y. Yabe
    • Journal Title

      Proceedings of 6th South African Rock Engineering Symposium SARES, Southern African Institue of Mining and Metallurgy, Johannesburg

      Pages: 349-358

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] In-situ monitoring of rock mass response to mining in South African gold mines using the Ishii strainmeters2014

    • Author(s)
      Ogasawara, H., T. Katsura, G. Hofmann, Y. Yabe, M. Nakatani, M. Naoi, H. Ishii, D. Roberts, S. Nakao, M. Okubo, J. Wienand, P. Lenegan, and A.K. Ward
    • Journal Title

      Proceedings of 6th South African Rock Engineering Symposium SARES, Southern African Institute of Mining and Metallurgy, Johannesburg

      Pages: 21-34

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] 南アフリカ金鉱山大深度における震源近傍での現位置多点応力測定の可能性2014

    • Author(s)
      小笠原宏・加藤春實・Gerhard Hofmann・矢部康男・坂口清敏
    • Journal Title

      月刊地球

      Volume: 36 Pages: 146-151

    • Related Report
      2013 Annual Research Report
  • [Journal Article] In-situ monitoring of rock mass response to mining in South African gold mines using the Ishii strainmeters2014

    • Author(s)
      Ogasawara, H., T. Katsura, G. Hofmann, Y. Yabe, M. Nakatani, M. Naoi, H. Ishii, D. Roberts, S. Nakao, M. Okubo, J. Wienand, P. Lenegan, A.K. Ward
    • Journal Title

      Proc. 6th South African Rock Engineering Symposium SARES 2014

      Volume: 1 Pages: 21-34

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In-situ stress measurement at earthquake prone areas in South African gold mines2014

    • Author(s)
      Ogasawara, H., H. Kato, G. Hofmann, D. Roberts, T. Clements, P. Piper, and Y. Yabe
    • Journal Title

      Proc. 6th South African Rock Engineering Symposium SARES 2014

      Volume: 1 Pages: 349-360

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] BX CCBO in-situ stress measurements at earthquake prone areas in South African gold mines - a summary of mini-workshop on 13 Feb 20142014

    • Author(s)
      Ogasawara, H., H.Kato, G.Hofmann, D. Roberts, P.Piper, T. Clements, A.K.Ward, Y. Yabe, H. Yilmaz, R.J. Durrheim, R.J.
    • Journal Title

      Proc. ARMA 2014

      Volume: 1

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Frequency -magnitude distribution of -3.7 < Mw <1 mining-induced earthquakes around a mining front and b value invariance with post-blast time2013

    • Author(s)
      Naoi, M., M. Nakatani, S. Horiuchi, Y. Yabe, J. Philipp, T. Kgarume, G. Morema, S. Khambule, T. Masakale, L. Ribeiro, K. Miyakawa, A. Watanabe, K. Otsuki, H. Moriya, O. Murakami, H. Kawakata, N. Yoshimitsu, A. Ward, R. Durrheim, and H. Ogasawara
    • Journal Title

      Pure and Applied Geophysics

      Volume: 1 Issue: 10 Pages: 1-20

    • DOI

      10.1007/s00024-013-0721-7

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Estimation of the stress state around the fault source of a Mw 2.2 earthquake in a deep gold mine in South Africa based on borehole breakout and core discing2013

    • Author(s)
      Yabe, Y., M. Nakatani, M. Naoi, T. Iida, T. Satoh, R. Durrheim, G. Hofmann, D. Roberts, H. Yilmaz, G. Morema, and H. Ogasawara
    • Journal Title

      Proceedings of 6th International Symposium on In-Situ Rock Stress (Sendai, Japan)

      Pages: 604-613

    • Related Report
      2013 Final Research Report
  • [Journal Article] Loading conditions of geological faults in deep level tabular mines2013

    • Author(s)
      Hofmann, G., L. Scheepers, and H. Ogasawara
    • Journal Title

      Proc. 6th Int. Symp. on In-Situ Rock Stress

      Volume: 1 Pages: 558-580

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Estimation of the stress state around the fault source of a Mw 2.2 earthquake in a deep gold mine in South Africa based on borehole breakout and core discing2013

    • Author(s)
      Yabe, Y., M. Nakatani, M. Naoi, T. Iida, T. Satoh, R. Durrheim, G. Hofmann, D. Roberts, H. Yilmaz, G. Morema, and H. Ogasawara
    • Journal Title

      Proc. 6th Int. Symp. on In-Situ Rock Stress

      Volume: 1 Pages: 604-613

    • Related Report
      2013 Annual Research Report
  • [Journal Article] In-situ stress measurements to constrain stress and strength near seismic faults in deep level South African gold mines2013

    • Author(s)
      Ogasawara, H., H. Kato, G. Hofmann, P. Piper, T. Clements, and K. Sakaguchi
    • Journal Title

      Proc. 6th Int. Symp. on In-Situ Rock Stress

      Volume: 1 Pages: 614-623

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Detection of mining-induced fractures associated with stress perturbation around a stope in Ezulwini gold mine, South Africa, by using AE events2013

    • Author(s)
      Moriya, M., M. Naoi, M. Nakatani, T. Kgarume, A.K. Ward, R. Durrheim, P. Joachim, Y. Yabe, H. Kawakata , H. Ogasawara
    • Journal Title

      Proc. 6th Int. Symp. on In-Situ Rock Stress

      Volume: 1 Pages: 597-602

    • Related Report
      2013 Annual Research Report
  • [Journal Article] In-situ monitoring and modelling of the rock mass response to mining: Japanese-South African collaborative research2013

    • Author(s)
      Ogasawara, H., G. Hofmann, H. Kato, M. Nakatani, H. Moriya, M. Naoi, Y. Yabe, R. Durrheim, A. Cichowicz, T. Kgarume, A. Milev, O. Murakami, T. Satoh, and H. Kawakata
    • Journal Title

      Proc. 8th Int. Symp. Rockburst and Induced Seismicity in Mines

      Volume: 1 Pages: 51-60

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 大深度・高応力の南アフリカ金鉱山の諸条件に最適な形で円錐孔底ひずみ法応力測定を行う試み2013

    • Author(s)
      小笠原宏,加藤春實,G. Hofmann,P. de Bruin,坂口清敏
    • Journal Title

      第13回岩の力学シンポジウム論文集

      Volume: 1 Pages: 465-470

    • Related Report
      2012 Annual Research Report
  • [Journal Article] Detection of mining-induced fractures around a stope in Ezulwini gold mine, South Africa, by using AE events with similar waveforms2012

    • Author(s)
      Moriya, H., M. Naoi, M. Nakatani, O. Murakami, T. Kgarume, A.K. Ward, R. Durrheim, J. Philipp, Y. Yabe, H. Kawakata, and H. Ogasawara
    • Journal Title

      Proceedings of 21th International Acoustic Emission Symposium, Jap. Soc. for Non-Destructive Inspection, Tokyo

      Pages: 181-186

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Temporal changes in attenuation of S waves through a fault zone in a South African gold mine2012

    • Author(s)
      Yoshimitsu, N., H. Kawakata, A. Yamamoto, H. Ogasawara, and Y. Iio
    • Journal Title

      Geophysical Journal International

      Volume: Vol.191 Pages: 1317-1324

    • DOI

      10.1111/j.1365-246x.2012.05678.x

    • Related Report
      2013 Final Research Report 2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Observational studies of earthquake nucleation, triggering and rupture in South African mines2012

    • Author(s)
      Durrheim, R.J. and H. Ogasawara
    • Journal Title

      Proceedings of the second Southern Hemisphere International Rock Mechanics Symposium, South African Institute of Mining and Metallurgy

      Volume: 1 Pages: 327-343

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An attempt to constrain the stress and strength of a dyke that accommodated a ML2.1 seismic event2012

    • Author(s)
      Hofmann, G., H. Ogasawara, T. Katsura, and D. Roberts
    • Journal Title

      Proceedings of the second Southern Hemisphere International Rock Mechanics Symposium, South African Institute of Mining and Metallurgy

      Volume: 1 Pages: 436-450

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Trial of the BX conical ended borehole overcoring stress measurement technique2012

    • Author(s)
      Ogasawara, H., H. Kato, G. Hofmann, and P. de Bruin
    • Journal Title

      J. South African Institute of Mining and Metallurgy

      Volume: 102 Pages: 479-753

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Detection of mining-induced fractures around a stope in Ezulwini gold mine, South Africa, by using AE events with similar waveforms2012

    • Author(s)
      Moriya, H., M. Naoi, M. Nakatani, O. Murakami, T. Kgarume, A.K. Ward, R. Durrheim, J. Philipp, Y. Yabe, H. Kawakata, and H. Ogasawara
    • Journal Title

      Proc. 21th Int. Acoustic Emission Sym., Jap. Soc. for Non-Destructive Inspection

      Volume: 1 Pages: 181-186

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Japanese - South African collaboration to mitigate seismic risks in mines: establishment of experimental sites2012

    • Author(s)
      Durrheim, R.J., H. Ogasawara, M. Nakatani, Y. Yabe, A.M. Milev, A. Cichowicz, H. Kawakata, O. Murakami, M. Naoi, N. Yoshimitsu, T. Kgarume, and the SATREPS Research Group
    • Journal Title

      Proceedings of the sixth International Seminar on Deep and High Stress Mining

      Volume: - Pages: 173-187

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Twenty thousand aftershocks of a very small (M2) earthquake and their relation to the mainshock rupture and geological structures2011

    • Author(s)
      Naoi, M., M. Nakatani, Y. Yabe, G. Kwiatek, T. Igarashi, and K. Plenkers
    • Journal Title

      Bulletin of the Seismological Society of America

      Volume: 101 Issue: 5 Pages: 2399-2407

    • DOI

      10.1785/0120100346

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the probalility of detecting pocoseismicity2011

    • Author(s)
      Plenkers, K., D. Schorlemmer, G. Kaiatek, and JAGUARS Research Group
    • Journal Title

      Bulletin of the Seismological Society of America

      Volume: 101 Issue: 6 Pages: 2579-2591

    • DOI

      10.1785/0120110017

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Source parameters of picoseismicity recorded at mponeng deep gold mine, South Africa: implications for scaling relations2011

    • Author(s)
      Kwiatek, G., K. Plenkers, G. Dresen, and JAGUARS Research Group
    • Journal Title

      Bulletin of the Seismological Society of America

      Volume: 101 Issue: 6 Pages: 2592-2608

    • DOI

      10.1785/0120110094

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Observational studies to mitigate seismic risks in mines : a new Japanese-South African collaborative research project2010

    • Author(s)
      Durrheim, R.J., H.Ogasawara, M.Nakatani, Y.Yabe, A.M.Milev, A.Cichowicz, H.Kawakata, H.Moriya, SATREPS Research Group
    • Journal Title

      The proceedings of the fifth International Seminar on Deep and High Stress Mining, 6-8 October 2010, Santiago, Chile, Australian Centre for Geomechanics

      Pages: 215-226

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Frequency-magnitude characteristics down to magnitude -4.4 for induced seismicity recorded at Mponeng Gold Mine, South Africa2010

    • Author(s)
      Kwiatek, G., K.Plenkers, M.Nakatani, Y.Yabe, G.Dresen, the JAGUARS Group
    • Journal Title

      Bulletin of the Seismological Society of America

      Volume: 100 Pages: 1165-1173

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Microfractures on natural faults stressed by mining2013

    • Author(s)
      Nakatani, M
    • Organizer
      The International Summer School on Earthquake Science "Diversity of Earthquakes" organized by the Earthquake Research Institute of the University of Tokyo and the Southern California Earthquake Center
    • Place of Presentation
      Laforet Gora, Kanagawa, Japan
    • Year and Date
      2013-09-25
    • Related Report
      2013 Final Research Report
  • [Presentation] A provisional plan of multiple stress measurements at a seismic source at great depth at South African gold mines2013

    • Author(s)
      Ogasawara, H., H. Kato, Y. Yabe, G. Hofmann, D. Roberts, and K. Sakaguchi
    • Organizer
      "Workshop on Earthquake and Stress" in association with 6th International Symposium on In-situ Rock Stress
    • Place of Presentation
      Sendai International Center, Miyagi, Japan
    • Year and Date
      2013-08-19
    • Related Report
      2013 Final Research Report
  • [Presentation] Water-ingress induced seismicity in mines in Japan, India and South Africa2011

    • Author(s)
      Ogasawara, H., C.Srinivasan, A.Cichowicz, O.Goldbach, K.Bosman
    • Organizer
      ICDP Workshop "Scientific Deep Drilling to Study Reservoir Triggered Earthquakes at Koyna, India"
    • Place of Presentation
      Hyderabad, India(招待講演)
    • Year and Date
      2011-03-21
    • Related Report
      2010 Annual Research Report
  • [Presentation] Coseismic and aseismic deformations of the rock mass around deep level mining in South Africa-Joint South African and Japanese study2010

    • Author(s)
      Milev, A M, Y.Yabe, M.Naoi, M.Nakatani, R.J.Durrheim, H.Ogasawara, C.H.Scholz
    • Organizer
      AGU 2010 Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      2010-12-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] Fault instability monitoring at South African mines2010

    • Author(s)
      Ogasawara, H., M.Nakatani, Y.Yabe, H.Kawakata, SATREPS Research Group
    • Organizer
      ISS Mini Seminar at Western Levels
    • Place of Presentation
      Western Levels, South Africa
    • Year and Date
      2010-11-19
    • Related Report
      2010 Annual Research Report
  • [Presentation] コーダ波スペクトル比法による極微小地震(-3くM<-1)のコーナー周波数の推定2010

    • Author(s)
      和田直也, 小笠原宏, 川方裕則, 中谷正生, 矢部康男, 直井誠, 宮川幸治, 安武剛太, 吉光奈奈, 三宅弘恵, 井出哲, 五十嵐俊博, G.Morema, E.Pinder
    • Organizer
      日本地震学会2010年秋季大会
    • Place of Presentation
      広島国際会議場(広島県)
    • Year and Date
      2010-10-29
    • Related Report
      2010 Annual Research Report
  • [Presentation] 2台の歪計から約100mで続発したMw~2の震源メカニズムと周辺領域の長期的な応力変化-南アフリカMponeng金鉱山2010

    • Author(s)
      桂泰史, 小笠原宏, 川方裕則, 中谷正生, 直井誠, 矢部康男, 安武剛太, 山本覚仁, 石井紘, E.Pinder, G.Morema, JAGUARS
    • Organizer
      日本地震学会2010年秋季大会
    • Place of Presentation
      広島国際会議場(広島県)
    • Year and Date
      2010-10-29
    • Related Report
      2010 Annual Research Report
  • [Presentation] 鉱山での地震被害低減のための観測研究-日本と南アフリカの共同研究2010

    • Author(s)
      小笠原宏, R Durrheim, 中谷正生, 矢部康男, A.Milev, A.Cichowicz, 川方裕則, 森谷祐一, 佐藤隆司, S.Murphy, A.Ward, G.Morema, M.Kataka, R.Vermeulen, G.van Aswegen, Research Group of SATREPS
    • Organizer
      日本地球惑星科学連合2010年大会
    • Place of Presentation
      幕張メッセ国際会議場(千葉県)
    • Year and Date
      2010-05-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] 48kHzサンプリング距離200m以内で観測された-3<M<0の地震の応力降下量2010

    • Author(s)
      和田直也, 小笠原宏, 川方裕則, 中谷正生, 矢部康男, 直井誠, 宮川幸治, 安武剛太, 吉光奈奈, 三宅弘恵, 井出哲, 五十嵐俊博, G.Morema, E.Pinder
    • Organizer
      日本地球惑星科学連合2010年大会
    • Place of Presentation
      幕張メッセ国際会議場(千葉県)
    • Year and Date
      2010-05-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] Observational studies to mitigate seismic risks in mines : a new Japanese-South African collaborative research project2010

    • Author(s)
      Durrheim, R.J., H.Ogasawara, M.Nakatani, Y.Yabe, A.M.Milev, A.Cichowicz, H.Kawakata, H.Moriya, the SATREPS research group
    • Organizer
      The fifth International Seminar on Deep and High Stress Mining
    • Place of Presentation
      Santiago, Chile
    • Related Report
      2010 Annual Research Report
  • [Presentation] A provisional plan of multiple stress measurements at a seismic source at great depth at South African gold mines

    • Author(s)
      Ogasawara, H., H. Kato, Y.Yabe, G.Hofmann, D.Roberts, and K.Sakaguchi
    • Organizer
      “Workshop on Earthquake and Stress” in association with 6th International Symp. In-situ Rock Stress
    • Place of Presentation
      仙台国際センター、宮城県
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 南アフリカ金鉱山における地震震源の応力研究の現状と展望

    • Author(s)
      小笠原宏
    • Organizer
      ICDP国内ワークショップ
    • Place of Presentation
      JAMSTEC東京事務所、東京都
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Microfractures on natural faults stressed by mining

    • Author(s)
      Nakatani, M.
    • Organizer
      The International Summer School on Earthquake Science ”Diversity of Earthquakes” organized by ERI, U. Tokyo and S. Calif. Earthq. Center
    • Place of Presentation
      Laforet Gora、神奈川県
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Observational studies in South African gold mines to mitigate seismic risks - What do Japanese seismologists hope to learn?

    • Author(s)
      Ogasawara, H. and R. Durrheim
    • Organizer
      9th annual AfricaArray Workshop
    • Place of Presentation
      University of the Witwatersrand, Johannesburg, South Africa
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Scientific and technological cooperation to mitigate earthquake risk in SA gold mines

    • Author(s)
      Ogasawara, H.
    • Organizer
      Japan Sustainable Mining, Investment and Technology business forum 2013
    • Place of Presentation
      ザ・プリンス パークタワー東京 東京都
    • Related Report
      2013 Annual Research Report
  • [Presentation] 南アフリカ金鉱山M1.5地震極近傍の応力測定

    • Author(s)
      小笠原宏, Gerhard Hofmann,加藤春實, Chris Stander, Gilbert Morema, Trevor Clements, Phil Piper
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ国際会議場、千葉県
    • Related Report
      2013 Annual Research Report
  • [Presentation] 南アフリカ金鉱山地下1km深で観察された既存弱面に密集する高b値の微小破壊

    • Author(s)
      直井誠,中谷正生,大槻憲四郎,矢部康男, T Kgarume, G. Morema, J. Philipp, S. Khambule, T. Masakale, L. Ribeiro,森谷祐一,村上理,堀内茂木,川方裕則,吉光奈奈,宮川幸治,渡邉篤志, T. Ward, R. Durrheim,小笠原宏
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ国際会議場、千葉県
    • Related Report
      2013 Annual Research Report
  • [Presentation] 断層透過弾性波のモニタリング-南アフリカCooke4 金鉱山

    • Author(s)
      川方裕則・吉光奈奈・中谷正生・J. Philipp・土井一生・直井 誠・村上 理・A. Ward・G. Morema・V. Visser・S. Khambule・T. Masakale・A. Milev・R. Durrheim・L. Ribeiro・Mike Ward・小笠原宏
    • Organizer
      日本地震学会
    • Place of Presentation
      神奈川県民ホール・産業貿易センター、神奈川県
    • Related Report
      2013 Annual Research Report
  • [Presentation] 南アフリカ金鉱山地下1km 深において,載荷される断層上で観察された-5.1<Mw<-3.6 の繰り返し地震

    • Author(s)
      直井 誠・中谷正生・大槻憲四郎・T. Kgarume・J. Philipp・T. Masakale・L. Ribeiro・森谷祐一・村上 理・矢部康男・川方裕則・A. Ward・R. Durrheim・小笠原宏
    • Organizer
      日本地震学会
    • Place of Presentation
      神奈川県民ホール・産業貿易センター、神奈川県
    • Related Report
      2013 Annual Research Report
  • [Presentation] 南アフリカ大深度金鉱山におけるMw2.2 の地震の震源域掘削に基づく応力推定

    • Author(s)
      矢部康男・小笠原宏・佐藤隆司・中谷正生・直井 誠・R. Durrheim・H. Yilmaz・G. Hofmann・D. Roberts
    • Organizer
      日本地震学会
    • Place of Presentation
      神奈川県民ホール・産業貿易センター、神奈川県
    • Related Report
      2013 Annual Research Report
  • [Presentation] 能動震源を用いた南アフリカ金鉱山微小破壊観測網のセンサー特性の時間変化の推定

    • Author(s)
      村上 理・川方裕則・吉光奈奈・中谷正生・直井 誠・Joachim Philipp・Thabang Masakale・Thabang Kgarume・Luiz Ribeiro・森谷祐一・矢部康男・Anthony Ward・Ray Durrheim・小笠原宏
    • Organizer
      日本地震学会
    • Place of Presentation
      神奈川県民ホール・産業貿易センター、神奈川県
    • Related Report
      2013 Annual Research Report
  • [Presentation] コーダ波を用いた坑道検出の試み -南アフリカCooke4 鉱山観測サイト

    • Author(s)
      今川祥太・川方裕則・土井一生・吉光奈奈・村上 理・中谷正生・直井 誠・Joachim Philipp・Anthony Ward・Gilbert Morema・Vlok Visser・Sifiso Khambule・Thabang Masakale・Alex Milev・Ray Durrheim・Luiz Ribeiro・Mike Ward・小笠原宏
    • Organizer
      日本地震学会
    • Place of Presentation
      神奈川県民ホール・産業貿易センター、神奈川県
    • Related Report
      2013 Annual Research Report
  • [Presentation] 南アフリカ金鉱山地下1km 深における多点AE観測と2つのM0級地震に関連するAE活動

    • Author(s)
      直井誠, 中谷正生, J. Philipp, 堀内茂木, 大槻憲四郎, T. Kgarume, G. Morema, S. Khambule, T. Masakale, 宮川幸治, 渡邉篤志, 森谷祐一, 村上理, 矢部康男, 川方裕則, 吉光奈奈, 小笠原宏
    • Organizer
      日本地球惑星科学連合大会
    • Place of Presentation
      幕張メッセ国際会議場、千葉県
    • Related Report
      2012 Annual Research Report
  • [Presentation] Magnitude-frequency distributions of AEs associated with the mining front and pre-existing faults-cases from SATREPS array operating in a South African gold mine

    • Author(s)
      Naoi, M., M. Nakatani, J. Philipp, S. Horiuchi, K. Otsuki, T. Kgarume, G. Morema, S. Khambule, T. Masakale, K. Miyakawa, A. Watanabe, H. Moriya, O. Murakami, Y. Yabe, H. Kawakata, N. Yoshimitsu, T. Ward, and H. Ogasawara
    • Organizer
      ECGS Workshop 2012
    • Place of Presentation
      Alvisse Parc Hotel, Luxembourg
    • Related Report
      2012 Annual Research Report
  • [Presentation] コーダ波を用いた坑道検出の試み―南アフリカEzulwini金鉱山観測サイト―

    • Author(s)
      今川祥太,川方裕則,土井一生,吉光奈奈,村上理,中谷正生,直井誠,J. Philipp,T. Ward,G. Morema,V. Visser, S. Khambule,T. Masakale,A. Milev,R. Durrheim,L. Ribeiro,M. Ward,小笠原宏
    • Organizer
      日本地震学会
    • Place of Presentation
      函館市民会館・函館市民体育館、北海道
    • Related Report
      2012 Annual Research Report
  • [Presentation] 南アフリカ金鉱山における微小破壊(-3.7 < Mw < 1.3)の規模別頻度分布と採掘発破前後のb値の安定性

    • Author(s)
      直井誠,中谷正生,J. Philipp,堀内茂木,大槻憲四郎,T. Kgarume,G. Morema,S. Khambule,T. Masakale,宮川幸治,渡邉篤志,森谷祐一,村上理,矢部康男,川方裕則,吉光奈奈,T. Ward,R. Durrheim,小笠原宏
    • Organizer
      日本地震学会
    • Place of Presentation
      函館市民会館・函館市民体育館、北海道
    • Related Report
      2012 Annual Research Report
  • [Presentation] 南アフリカ金鉱山地下1km深で観察された,クラックが準静的に20mまで成長したことを示唆するAE活動

    • Author(s)
      直井誠,中谷正生,J. Philipp,堀内茂木,大槻憲四郎,T. Kgarume,G. Morema,S. Khambule,T. Masakale,宮川幸治,渡邉篤志,森谷祐一,村上理,矢部康男,川方裕則,吉光奈奈,T. Ward,R. Durrheim, 小笠原宏
    • Organizer
      日本地震学会
    • Place of Presentation
      函館市民会館・函館市民体育館、北海道
    • Related Report
      2012 Annual Research Report
  • [Presentation] 地震発生場においてより多くの応力測定を実現するための南アフリカ金鉱山での取り組み

    • Author(s)
      小笠原宏,加藤春實
    • Organizer
      日本地震学会
    • Place of Presentation
      函館市民会館・函館市民体育館、北海道
    • Related Report
      2012 Annual Research Report
  • [Presentation] 南アフリカ金鉱山半制御地震発生実験(2010 年), 鉱山での地震被害低減のための観測研究-日本と南アフリカの共同研究

    • Author(s)
      小笠原宏, R. Durrheim, 中谷正生, 矢部康男, A. Milev, A. Cichowicz, 川方裕則, 村上 理, 直井 誠, 森谷祐一, 佐藤隆司, SATREPS研究グループ
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      幕張メッセ 千葉県
    • Related Report
      2011 Annual Research Report
  • [Presentation] Monitoring of Stress Build-up and Instability on Faults, Institute of Mine Seismology

    • Author(s)
      Ogasawara, H.
    • Organizer
      2011 Seminar on the future of monitoring seismic rock mass response to mining
    • Place of Presentation
      Hermanus, South Africa
    • Related Report
      2011 Annual Research Report
  • [Presentation] 人間以上に高精度の地震波自動読み取りシステムの開発(その2)

    • Author(s)
      堀内茂木, 堀内優子, 飯尾能久, 佐々木祐樹, 澤田義博, 関根秀太郎, 岡田知己, 日野亮太, 中谷正生, 直井誠, 中村洋光
    • Organizer
      日本地球惑星科学連合2011 年大会
    • Place of Presentation
      幕張メッセ 千葉県
    • Related Report
      2011 Annual Research Report
  • [Presentation] Observational studies of earthquake preparation and generation to mitigate seismic risks in mines

    • Author(s)
      Ogasawara, H., R. Durrheim, M. Nakatani, Y. Yabe, A. Milev, A. Cichowicz, H. Kawakata, O. Murakami, M. Naoi, H. Moriya, T. Satoh, and SATREPS research group
    • Organizer
      IUGG
    • Place of Presentation
      Melbourne, Australia
    • Related Report
      2011 Annual Research Report
  • [Presentation] Multidisciplinary monitoring of flooding induced seismicity in Japan and what we can do in South Africa

    • Author(s)
      Ogasawara, H.
    • Organizer
      Council for Geoscience 4th Annual Seismology Workshop on Fluid-induced seismicity
    • Place of Presentation
      Pretoria, South Africa
    • Related Report
      2011 Annual Research Report
  • [Presentation] M~2 の鉱山地震の発生が見込まれる断層を透過する弾性波のモニタリング-南アフリカEzulwini金鉱山

    • Author(s)
      川方裕則,吉光奈奈,中谷正生,J. Philipp,土井一生,直井 誠,T. Ward,G. Morema,V. Visser,S. Khambule,T. Masakale,A. Milev,R. Durrheim,L. Ribeiro,M. Ward,小笠原宏
    • Organizer
      日本地震学会2011年秋季大会
    • Place of Presentation
      静岡県コンベンションアーツセンター・グランシップ 静岡県
    • Related Report
      2011 Annual Research Report
  • [Presentation] 南アフリカ金鉱山の地震発生場における応力・強度拘束の試み

    • Author(s)
      小笠原宏,G. Hofmann,D. Roberts,中尾 茂,加藤春實
    • Organizer
      日本地震学会2011年秋季大会
    • Place of Presentation
      静岡県コンベンションアーツセンター・グランシップ 静岡県
    • Related Report
      2011 Annual Research Report
  • [Presentation] 南アフリカ金鉱山の断層近傍における地震波干渉法により推定したグリーン関数と透過弾性波記録の比較

    • Author(s)
      吉光奈奈,川方裕則,中谷正生,J. Philipp,直井 誠,土井一生,T. Ward,V. Visser,G. Morema,S. Khambule,T. Masakale,A. Milev,R. J. Durrheim,L. Ribeiro,M. Ward,小笠原宏
    • Organizer
      日本地震学会2011年秋季大会
    • Place of Presentation
      静岡県コンベンションアーツセンター・グランシップ 静岡県
    • Related Report
      2011 Annual Research Report
  • [Presentation] Monitoring transmitted waves across a fault with a high potential for mining induced earthquakes -the Ezulwini gold mine in South Africa

    • Author(s)
      Kawakata, H., N. Yoshimitsu, M. Nakatani, et al.
    • Organizer
      2011 Fall Meeting, AGU
    • Place of Presentation
      San Francisco, USA
    • Related Report
      2011 Annual Research Report
  • [Presentation] Observational Studies of Earthquake Preparation and Generation to Mitigate Seismic Risks in Mines

    • Author(s)
      Durrheim, R.J., H. Ogasawara, M. Nakatani, A. Milev, A. Cichowicz, H. Kawakata, Y. Yabe, O. Murakami, M. Naoi, H. Moriya, and T. Satoh
    • Organizer
      2011 Fall Meeting, AGU
    • Place of Presentation
      San Francisco, USA
    • Related Report
      2011 Annual Research Report
  • [Presentation] Scaling relationship between corner frequencies and seismic moments of ultra micro earthquakes estimated with coda-wave spectral ratio -the Mponeng mine in South Africa

    • Author(s)
      Wada, N., H. Kawakata, O. Murakami, I. Doi. N. Yoshimitsu, M. Nakatani, Y. Yabe, M. Naoi, K. Miyakawa, H. Miyake, S. Ide, T. Igarashi, G. Morema, E. Pinder, and H. Ogasawara
    • Organizer
      2011 Fall Meeting, AGU
    • Place of Presentation
      San Francisco, USA
    • Related Report
      2011 Annual Research Report
  • [Presentation] Keynote: the great eastern Japanese earthquake and tsunami of 11 March 2011 and the research we are doing in South African gold mines

    • Author(s)
      Ogasawara, H.
    • Organizer
      AfricaArray Workshop 2011
    • Place of Presentation
      Johannesburg, South Africa
    • Related Report
      2011 Annual Research Report
    • Invited
  • [Presentation] Establishment of SATREPS experimental sites in South African gold mines to monitor phenomena associated with earthquake nucleation and rupture

    • Author(s)
      Durrheim, R. J., H. Ogasawara, M. Nakatani, Y. Yabe, A.M. Milev, A. Cichowicz, H. Kawakata, O. Murakami, M. Naoi, N. Yoshimitsu, and T. Kgarume
    • Organizer
      Sixth International Seminar on Deep and High Stress Mining 2012
    • Place of Presentation
      Perth, Australia
    • Related Report
      2011 Annual Research Report
  • [Presentation] A modified CCBO technique optimized for regular geological drilling procedures in South African gold mines

    • Author(s)
      Ogasawara, H., H. Kato, G. Hofmann, P. de Bruin
    • Organizer
      ACG Stress Measurement Workshop
    • Place of Presentation
      Perth, Australia
    • Related Report
      2011 Annual Research Report
  • [Remarks] 2013年8月26日、朝日新聞、朝刊、科学面「震源直近、動き探る 南アの金鉱、日本人チーム挑戦」。

    • Related Report
      2013 Final Research Report
  • [Remarks] 2010年11月22日、読売新聞 とれたて!科学Monday 「南ア鉱山地震を観測-地下3000メートル超震源断層に迫る」

    • Related Report
      2013 Final Research Report
  • [Remarks] 2010年1月12日(火)、「地震を掘り出す」、東京新聞・東京中日新聞朝刊。2009年10月31日(土)、「南アとの共同予知研究」、読売新聞朝刊

    • Related Report
      2013 Final Research Report
  • [Remarks]

    • URL

      http://www.mineseis.se.ritsumei.ac.jp/JSPS/JSPS-HOME.html

    • Related Report
      2013 Final Research Report
  • [Remarks] 科学研究費補助金基盤研究S 南アフリカ金鉱山におけるM2震源域での地震の準備と発生過程の総合観測

    • URL

      http://www.mineseis.se.ritsumei.ac.jp/JSPS/JSPS-HOME.html

    • Related Report
      2013 Annual Research Report
  • [Remarks] 科学研究費補助金基盤研究S 南アフリカ金鉱山におけるM2震源域での地震の準備と発生過程の総合観測

    • URL

      http://www.mineseis.se.ritsumei.ac.jp/JSPS/JSPS-HOME.html

    • Related Report
      2012 Annual Research Report

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Published: 2009-04-01   Modified: 2019-07-29  

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