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DETAILED STUDIES ON THE STRUCTURE OF MID ATLANTIC RIDGE

Research Project

Project/Area Number 09044046
Research Category

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

Allocation TypeSingle-year Grants
Section一般
Research Field 固体地球物理学
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

SHIMAMURA Hideki  Hokkaido Univ., Grad. School of Sci., Professor., 大学院・理学研究科, 教授 (10011636)

Co-Investigator(Kenkyū-buntansha) TAKANAMI Tetsuo  Hokkaido Univ., Grad.School of Sci., Associate Professor., 大学院・理学研究科, 助教授 (60002177)
NISHIMURA Yuichi  Hokkaido Univ., Grad. School of Sci., Instructer., 大学院・理学研究科, 助手 (20208226)
村井 芳夫  北海道大学, 大学院・理学研究科, 助手 (40301931)
TYO Ikuo  Hokkaido Univ., Grad.School of Sci., Part-time researcher., 大学院・理学研究科, 非常勤研究員
WATANABE Tomoki  Hokkaido Univ., Grad.School of Sci., Part-time researcher., 大学院・理学研究科, 非常勤研究員
セレボール マークバード  ベルケン大学固体地球物理学研究所, 教授
小平 秀一  海洋科学技術センター, 研究員 (80250421)
岩崎 貴哉  東京大学, 地震研究所, 教授 (70151719)
ヒルン アルフレッド  パリ第6大学, 地球物理学部, 教授
ホワイト ロバート  英国ケンブリッジ大学, 海洋研究所, 教授
アベディック フェリック  フランス海洋庁, 海洋研究所, 主任研究員
ミエルデ ロルフ  ベルゲン大学, 固体地球物理学研究所, 助教授
メルザ バシレ  ルーマニア国立地震研究所, 主任研究員
アイナルソン ポール  アイスランド大学, 理学部, 教授
ブランズドッティル ブリ  アイスランド大学, 理学部, 助教授
ベルグソン ベルグール  アイスランド気象庁, 主任研究員
グドムソン グンナール  アイスランド気象庁, 主任
ステファンソン ラグナー  アイスランド気象庁, 部長
塩原 肇  富山大学, 理学部, 助教授 (60211950)
金沢 敏彦  東京大学, 地震研究所, 教授 (30114698)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥16,200,000 (Direct Cost: ¥16,200,000)
Fiscal Year 1999: ¥5,800,000 (Direct Cost: ¥5,800,000)
Fiscal Year 1998: ¥5,500,000 (Direct Cost: ¥5,500,000)
Fiscal Year 1997: ¥4,900,000 (Direct Cost: ¥4,900,000)
KeywordsOcean Bottom Seismographs / Seismicity / Mid Atlantic Ridge / Subbottom Structure under the Atlantic / Icelandic Hot Spot / Plate Tectonics / 海底地震観測 / スピッツベルゲン / 地下構造研究 / エアガン / 海陸境界 / クニボビッチ嶺 / 地震活動 / ティヨルネス断裂帯 / 地震のメカニズム / アイスランド火山帯 / コルベインセイ海嶺
Research Abstract

By the use of Ocean Bottom Seismographs (OBS), which was developed by the head investigator and his colleagues in Japan, we investigated the subbottom structure of the region from Mid Atlantic Ridge through Norwegian Atlantic coast with detail by means of controlled source seismology. Also, microearthquake survey by the use of OBS has revealed the detailed seismicity which is a direct results from the activity and movement of oceanic lithosphere which was born at the Mid Atlantic Ridge.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] Mjelde,R.,Digranes,P.,Van Schaack,M.,Shimamura,H.,Shiobara,H.Kodaira,S.,Naess,O.,Sorenes,N.a: "Crustal structure of the outer Voring Plateau, offshore Norway, from ocean bottom seismic and gravity data"Journal of Geophysical Research. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Berg,E.,Amundsen,K.,Morton,A.,Mjelde,R.,Shimamura,H.,Shiobara,H.,Kanazawa,T.,Kodaira,S.,an: "Three component OBS-data processing for lithology and fluid prediction in the mid-Norway margin, NE Atlantic"Earth, Planets and Space. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Weir,N.R.,White,R.S.,Brandsdottir,B.,Einarsson,P.,Shimamura,H.,Shiobara,H. and the RISE Fieldwork: "Crustal structure of the Northern Reykjanes Ridge and Reykjanes Peninsula, Southwest Iceland"Journal of Geophysical Research. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mochizuki,M.;Brandsdottir,B.;Shiobara,H.;Gudmundsson,G.;Stefansson,R.;Shimamura,H: "Detailed distribution of microearthquakes along the northern Reykjanes Ridge, off SW-Iceland"Geophys.Res.Lett.. 27(13). 1945-48 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mjelde,R.,Digranes,P.,Shimamura,H.,Shiobara,H.Kodaira,S.,Brekke,H.,Egebjerg,T.,Soerenes,N.an: "Crustal structure of the northern part of the Voering Basin, mid-Norway margin, from wide-angle seismic and gravit"Tectonophysics. 293. 175-205 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kodaira,S.,Mjelde,R.,Gunnarsson,K.,Shiobara,H., and Shimamura,H.: "Evolution of oceanic crust on the Kolbeinsey Ridge, north of Iceland, over the past 22 Myr."Terra Nova. 10. 27-31 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kodaira,S.,Mjelde,R.,Gunnarsson,K.,Shiobara,H., and Shimamura,H.: "Structure of the Jan Mayen microcontinent and implications for its evolution"Geophysical Journal International. 132. 235-257 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mjelde,R.,Kodaira,S.,Shimamura,H.,Kanazawa,T.,Shiobara,H.,Berg,E.W., and Riise,O.: "Crustal structure of the central part of the Voring Basin, mid-Norway margin, from Ocean Bottom Seismographs"Tectonophysics. 277. 235-257 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mjelde,R.,Kodaira,S.,Digranes,P.,Shimamura,H.,Kanazawa,T.,Shiobara,H.,Berg,E.W., and Riise,O.: "Comparison between a regional and semi-regional crustal OBS model in the Voring Basin, mid-Norway margin"Pure and Applied Geophysics. 149. 641-665 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 島村英紀: "地震は妖怪騙された学者たち"講談社. 205 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 島村英紀: "地震と火山の島国-極北アイスランドで考えたこと"岩波書店. 224 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mjelde, R., Digranes, P., Van Schaack, M., Shimamura, H., Shiobara, H.Kodaira, S., Naess, O., Sorenes, N.and Vaagnes, E.: "Crustal structure of the outer Voring Plateau, offshore Norway, from ocean bottom seismic and gravity data"Journal of Geophysical Research.. accepted. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Berg, E., Amundsen, L., Morton, A., Mjelde, R., Shimamura, H., Shiobara, H., Kanazawa, T., Kodaira, S., and J.P.Ejellanger, J.P.: "Three component OBS-data processing for lithology and fluid prediction in the mid-Norway margin, NE Atlantic"Earth, Planets and Space.. (accepted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Weir, N.R., White, R.S., Brandsdottir, B., Einarsson, P., Shimamura, H., Shiobara, H.and the RISE Fieldwork Team (Fiona Darbyshire, Gunnar Gunnarsson, Vala Hjorleifsdottir, Kristin Jonsdottir, Masashi Mochizuki, Ayako Nakanishi, John Smallwood and Robert Staples): "Crustal structure of the Northern Reykjanes Ridge and Reykjanes Peninsula, Southwest Iceland"Journal of Geophysical Research. (accepted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mochizuki, M. ; Brandsdottir, B. ; Shiobara, H. ; Gudmundsson, G. ; Stefansson, R. ; Shimamura, H.: "Detailed distribution of microearthquakes along the northern Reykjanes Ridge, off SW-Iceland"Geophys. Res.Lett.. Vol.27, No.13. 1945-1948 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Demetrescu, C., and Shimamura, H.: "Groundwater microtemperature measurements in Romania"in Microtemperature Signals of the EArth's Crust, edited by G.Bunterbath, Seminar der Dr.Wilhelm Heinrich Heraus und Else Heraus-Stiftung. 142-146 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mjelde, R., Digranes, P., Shimamura, H., Shiobara, H.Kodaira, S., Brekke, H., Egebjerg, T., Soerenes, N.and Thorbjoernsen, T.: "Crustal structure of the northern part of the Voering Basin, mid-Norway margin, from wide-angle seismic and gravity data"Tectonophysics. 293. 175-205 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Digranes, P.Mjelde, R., Kodaira, S., Shimamura, H., Kanazawa, T., Shiobara, H.and Berg, E.W.: "A regional shear-wave velocity model in the central Voring Basin, N.Norway, using three-component Ocean Bottom Seismographs."Tectonophysics.. (in press). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kodaira, S., Mjelde, R., Gunnarsson, K., Shiobara, H., and Shimamura, H.: "Evolution of oceanic crust on the Kolbeinsey Ridge, north of Iceland, over the past 22 Myr."Terra Nova. 10. 27-31 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kodaira, S., Mjelde, R., Gunnarsson, K., Shiobara, H., and Shimamura, H.: "Structure of the Jan Mayen microcontinent and implications for its evolution"Geophysical Journal International. 132. 383-400 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mjelde, R., Kodaira, S., Shimamura, H., Kanazawa, T., Shiobara, H., Berg, E.W., and Riise, O.: "Crustal structure of the central part of the Voring Basin, mid-Norway margin, from Ocean Bottom Seismographs"Tectonophysics. 277. 235-257 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Mjelde, R., Kodaira, S., Digranes, P., Shimamura, H., Kanazawa, T., Shiobara, H., Berg, E.W., and Riise, O.: "Comparison between a regional and semi-regional crustal OBS model in the Voring Basin, mid-Norway margin"Pure and Applied Geophysics. 149. 641-665 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Murai, Y.: "OBS-airgun study of deep structure beneath continent-ocean transition in the Atlantic, off Norway"Physics of the Earth and planetary Interiors.

    • Related Report
      1999 Annual Research Report
  • [Publications] Nishimura, Y.: "Crust and upper mantle structure between Spitzbergen and Knipovich Ridge revealed by OBS studies"Tectonophysics.

    • Related Report
      1999 Annual Research Report
  • [Publications] Mjelde, R.: "A very detailed subbottom sturucture of Voring Basin, off Northern Norway"Physics of the Earth and Planetary Interiors.

    • Related Report
      1999 Annual Research Report
  • [Publications] Murai, Y.: "Oblique opening of Atlantic Ocean which occurred west off Spitzbergen"Tectonophysics.

    • Related Report
      1999 Annual Research Report
  • [Publications] Murai,Y.: "OBS-airgun study of deep structure between Svalbard and Knipovich Ridge" Physics of the Earth and Planetary Interiors. (発表予定).

    • Related Report
      1998 Annual Research Report
  • [Publications] Nishimura,Y.: "Microearthquake activity of Knipovich Ridge,and transmission of seismic waves along the flank of the Ridge" Tectonophysics. (発表予定).

    • Related Report
      1998 Annual Research Report
  • [Publications] Mjelde,R.: "Deep structure of passive margin off Northern Norway by use of three component OBS and airguns." Physics of the Earth and Planetary Interiors. (発表予定).

    • Related Report
      1998 Annual Research Report
  • [Publications] Murai,Y.: "Deep structure of beneath and around Spitzbergen" Tectonophysics. (発表予定).

    • Related Report
      1998 Annual Research Report
  • [Publications] Kamimura, A., Watanabe, T., and Shimamura, H.: "Ocean bottom seismic activity revealed by dense Ocean bottom seismograph array." Physics of the Earth and planetary Interiors. (印刷中).

    • Related Report
      1997 Annual Research Report
  • [Publications] Gunnar, G., Watanabe, T., Ragnar, S., and Shimamura, H.: "Earthquake hypocentre relocations by use of Ocean Bottom Seismographs" Tectonophysics. (印刷中).

    • Related Report
      1997 Annual Research Report
  • [Publications] Ragnar, S., Kamimura, A., Gunnar, G., Watanabe, T., and Shimamura, H.: "Mid Ocean Ridge seismicity beneath Tjornes Fracture zone and its tectonic implications." (印刷中).

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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