Study of World Ocean Floor by Drilling & Down hole Measurement

1993 Fiscal Year Final Research Report Summary

• Project/Area Number: 04044045
• Research Category: Grant-in-Aid for international Scientific Research
• Allocation Type: Single-year Grants
• Section: Joint Research
• Research Institution: Ocean Research Institute, Univ. of Tokyo
• Principal Investigator: TAIRA Asahiko Ocean Res. Inst., Univ. of Tokyo, Professor, 海洋研究所, 教授 (50112272)
• Co-Investigator(Kenkyū-buntansha): KINOSHITA Hajimu Earthquake Research Institute, Univ. of Tokyo, 地震研究所, 教授 (10110347) ; ASHI Juichiro Univ. of Tokyo, 大学院理学系研究科, 助手 (40251409) ; SHINOHARA Masanao Chiba Univ., 理学部, 助教授 (90242172) ; NAKANISHI Masao Ocean Res. Inst. Univ. of Tokyo, 海洋研究所, 助手 (80222165) ; GAMO Toshitaka Ocean Res. Inst. Univ. of Tokyo, 海洋研究所, 助教授 (70143550) ; TOKUYAMA Hidekazu Ocean Res. Inst. Univ. of Tokyo, 海洋研究所, 助手 (10107451) ; FUJIMOTO Hiromi Ocean Res. Inst. Univ. of Tokyo, 海洋研究所, 助教授 (50107455) ; TAMAKI Kensaku Ocean Res. Inst. Univ. of Tokyo, 海洋研究所, 教授 (50188421) ; SEGAWA Jiro Ocean Res. Inst. Univ. of Tokyo, 海洋研究所, 教授 (60013570) ; SUYEHIRO Kiyoshi Ocean Res. Inst. Univ. of Tokyo, 海洋研究所, 助教授 (20133928) ; SHIMAMURA Hideki Hokkaido Univ., 理学部, 教授 (10011636) ; SAITO Tsunemasa Hohoku Univ., 理学部, 教授 (90111335) ; OKADA Hisatake Univ. of Yamagata, 理学部, 教授 (80111334) ; ISEZAKI Nobuhiro Chiba Univ., 理学部, 教授 (60107943) ; YAMANO Makoto Earthquake Research Institute, Univ. of Tokyo, 地震研究所, 助手 (60191368) ; KANAZAWA Toshihiko Univ. of Tokyo, 理学部, 助教授 (30114698) ; OKADA Makoto Ibaraki Univ., 理学部, 助手 (00250978) ; KASAHARA Junzo Earthquake Research Institute, Univ. of Tokyo, 地震研究所, 教授 (70012953) ; HIRATA Naoshi Earthquake Research Institute, Univ. of Tokyo, 地震研究所, 助教授 (90156670) ; UJIIE Hiroshi Ryukyu Univ., 理学部, 教授 (60000113) ; TORIUMI Mitsuhiro Univ. of Tokyo, 理学部, 教授 (10013757) ; OGAWA Yujiro Univ. of Tsukuba, 地球科学系, 教授 (20060064) ; HAMANO Yozo Univ. of Tokyo, 理学部, 教授 (90011709) ; SATO Tokiyuki Akita Univ., 鉱山学部, 助教授 (60241668) ; KOIZUMI Itaru Hokkaido Univ., 理学部, 教授 (20029721) ; NAGAO Toshiyasu Kanazawa Univ., 理学部, 助手 (20183890) ; CHINZEI Kiyotaka Kyoto Univ., 理学部, 教授 (70011517) ; TATSUMI Yoshiyuki Kyoto Univ., 総合人間学部, 助教授 (40171722) ; KOTAKE Nobuhiro Chiba Univ., 大学院・自然科学研究科, 助手 (00205402) ; SOH Wonn Kyushu Univ., 理学部, 助教授 (90183847) ; UEDA Seiya Tokai Univ., 海洋学部, 教授 (60011459) ; 奥田 義久 工業技術院地質調査所, 海洋地質部, 課長 ; OKADA Hakuyu Kyushu Univ., 理学部, 教授 (60037182) ; KAGAMI Hideo Josai Univ., 理学部, 教授 (50013561) ; OZAWA Hiroaki Naruto Univ. of Education, 自然系, 助手 (60253241) ; NIIDA Kiyoaki Hokkaido Univ., 理学部, 講師 (30111149) ; NAKAO Seizo Geological Survey of Japan, 海洋地質部, 部長 ; NEMOTO Naoki Hirosaki Univ., 理学部, 助手 (20208292) ; FUJII Naoyuki Nagoya Univ., 理学部, 教授 (60011631) ; SAITO Yoshiki Geological Survey of Japan, 海洋地質部, 主任研究官 ; HIRASAWA Tomoo Tohoku Univ., 理学部, 教授 (80011568) ; WAKITA Hiroshi Univ. of Tokyo, 理学部, 教授 (40011689) ; TAKAHASHI Kozo Hokaido Tokai Univ., 工学部, 教授 (30244875) ; ITO Hisao Geological Survey of Japan, 地殻熱部, 主任研究官 ; NOGI Yoshifumi Geochemical Laboratory Meteorological Research Institute, 地球化学研究部, 研究官 ; 石塚 英男 高知大学, 理学部, 助教授 (00142349) ; FUJIBAYASHI Norie Niigata Univ., 教育学部, 助手 (20238603) ; TANIMURA Yoshihiro National Science Museum, 地学研究部, 室長 (80141985) ; HANDA Nobuhiko Inistitute for Hydrosphere Research, Nagoya Univ, 大気水圏科学研究所, 教授 (00022559) ; OKUDA Hisato Geological Survey of Japan ; SATO Takaharu Niigata Univ. (90196246)
• Project Period (FY): 1992 – 1993
• Keywords: mantle plume / oceanic crust / plate tectonics / sea level change / ice age / greenhouse earth / ocean drilling / tomography

Research Abstract

The research conducted this year includes the tectonics, sedimentation, petrology and paleoenvironments of the Atlantic Ocean. The mechanism of the breakup the Pangea and the birth of the Atlantic Ocean has been the one of the major objectives of the earth sciences. This program investigated the Greenland offshore penetrated an entire section of so-called seaward dipping reflector and found that the breakup was accompanied by dome uplift, emplacement of enormous basaltic magma which followed by rapid subsidence. This sequence of event suggests that the continental breakup and greenhouse earth was associated with mantle plume. This finding is a major break through in the earth science.
The program also made a major contribution in the field of paleooceanography. The deep seas drilling in the area of northern Atlantic showed that the initial development of the polar ice sheet started about 7.5 Ma and massive development about 2.5 Ma. The high frequency cold-warm signals with duration of several thousand years were detected as a change in sea surface temperature concordant with the results of the Greenland ice core data. This produced a truly new insight into the climatic behavior and previous view of ice age climatic picture have to be reconsidered with new perspectives.
Samples and data brought from the drilling vessel have been analyzed in cooperation with partner countries' scientist. Continuos discussion has been carried in the various committees and panels for the evaluation of results, science planning and future direction. An important meeting was held in Kyoto for the future planning of ocean drilling. An consensus was reached ; need for deep drilling and strong program of borehole observatory for earth interior tomography. The future direction of ocean drilling should emphasize these two points.

Research Products

• [Publications] 平朝彦・芦寿一郎: "SEDIMENTARY FACIES EVOLUTION OF THE NANKAI FOREARC AND ITS IMPLICATIONS FOR THE GROWTH OF THE SHIMANTO ACCRETIONARY PRISM" Proceedings of the Ocean Drilling Program,Scientific Results Eds.Hill.I.A.,Taira,A.,Firth,J.V.,et al.131. 331-341 (1993)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 徐垣 W.Soh,T.Byrne,A.Taira,and A.Kono: "COMPUTED TOMORAPHY(CT)SCAN IMAGE ANALYSIS OF SITE 808 CORES:STRUCTUAL AND PHYSICAL PROPERTY IMPLICATIONS" Proceedings of the Ocean Drilling Program,Scientific Results Eds.Hill.I.A.,Taira,A.,Firth,J.V.,et al.131. 135-155 (1993)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 末広潔: "ODP深海底学術掘削と孔内計測" TECHNO MARINE(日本造船学会誌). 775. 18-23 (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 末広潔: "ODPと孔内計測の新展開" 地球. 号外9. 14-21 (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 小川勇二郎・小林和男: "日本海溝と千島海溝の地形および地質的特徴" 月刊地球. 号外9. 60-69 (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 蒲生俊敬: "The marine carbon cycle and global climatic change" Bulletin of the Society of Sea Water Science,Japan. 47. 123-134 (1993)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] K.T.Pickering & A.Taira and others: "Tectonosedimentation:with Examples from the Tertiary-Recent of Southeast Japan" Pergamon Press, 421 (1993)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 海洋調査技術学会(分担 藤本博巳): "海洋調査フロンティア海を計測する" 海洋調査技術学会, 304 (1993)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] A.Taira and J.Ashi: "SEDIMENTARY FACIES EVOLUTION OF THE NANKAI FOREARC AND ITS IMPLICATIONS FOR THE GROWTH OF THE SHIMANTO ACCRETIONARY PRISM" Proceedings of the Ocean Drilling Program, Scientific Results Eds. Hill. I.A., Taira, A., Firth, J.V., et al.131. 331-341[JOURNAL ARTICLE] (1993)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] W.Soh, T.Byrne, A.Taira, and A.Kono: "COMPUTED TOMORAPHY (CT) SCAN IMAGE ANALYSIS OF SITE 808 CORES : STRUCTURAL AND PHYSICAL PROPERTY IMPLICATIONS" Proceedings of the Ocean Drilling Program, Scientific Results Eds. Hill. I.A., Taira, A., Firth, J.V., et al.131. 135-155 (1993)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] K.Suyehiro: "ODP Deep Drilling and Downhole Measurements" TECHNO MARINE. 775. 18-23 (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] K.Suyehiro: "New Directions in ODP and Downhole Measurements" Earth Monthly. Special Paper 9. 14-21 (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Y.Ogawa and K.Kobayashi: "Topography and Geological Features of Japan and Kuril Trenches" Eartth Monthly. Special Paper 9. 60-69 (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] T.Gamo: "The marine carbon cycle and global climatic change" Bulletin of the Society of Sea Water Science, Japan. 47. 123-134 (1993)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] K.T.Pickering & A.Taira and others: Pergamon Press. Tectonosedimentation : with Examples from the Tertiary-Recent of Southeast Japan, 1-421 (1993)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Japan Society for Marine Surveys and Technology(ed.)(Hiromi Fujimoto): Japan Society for Marine Surveys and Technology. Trontiers of Marine Surveys, 1-304 (1993)
  • Description: 「研究成果報告書概要(欧文)」より