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Preliminary study of ocean bottom geoscience station using trans-Pacific telecommunication cable

Research Project

Project/Area Number 01420010
Research Category

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

Allocation TypeSingle-year Grants
Research Field 固体地球物理学
Research InstitutionEarthquake Research Instutute, University of Yokyo

Principal Investigator

YUKUTAKE Takeshi  Earthquake Research Institute, Univ. Tokyo, Prof., 地震研究所, 教授 (90012898)

Co-Investigator(Kenkyū-buntansha) UTADA Hisashi  Earthquake Research Institute, Univ. Tokyo, Assoc. Prof., 地震研究所, 助教授 (70134632)
SHIMAZAKI Kunihiko  Earthquake Research Institute, Univ. Tokyo, Prof., 地震研究所, 教授 (50012951)
TSUJI Yoshinori  Earthquake Research Institute, Univ. Tokyo, Assoc. Prof., 地震研究所, 助教授 (30183479)
HAMANO Yozo  Earth Plan Phys., Faculty of Science, Univ. Tokyo Prof., 理学部, 教授 (90011709)
KASAHARA Junzo  Earthquake Research Institute, Univ. Tokyo Assoc. Prof., 地震研究所, 教授 (70012953)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥28,900,000 (Direct Cost: ¥28,900,000)
Fiscal Year 1991: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1990: ¥11,200,000 (Direct Cost: ¥11,200,000)
Fiscal Year 1989: ¥16,500,000 (Direct Cost: ¥16,500,000)
Keywordsreuse of submarine cable / deep-sea technology / global seismology / ocean bottom seismometer / ocean bottom magnetometer / ocean bottom pressure gauge / ocean bottom precision thermometer / date telemetry technology / 海底ケ-ブル / 海底地震観測 / 海底電磁気観測 / 海底津波観測 / 長周期地震計 / 加速度計 / 差圧型ハイドロフオン / 長周期海底地震計 / 差圧ゲ-ジ / 津波計 / 4成分磁力計 / 海底連続観測 / サ-ボ型加速度計 / プロトン磁力計
Research Abstract

The purpose of this project is to study the feasibility of submarine telecommunication cable re-use, specially GeO-TOC cable which runs between Ninomiya and Guam, build a prototype submarine instrument aiming to test the above purpose and examine this prototype instrument. The submarine telecommunication system was studied and key factors in the submarine cable system were reviewed. A prototype instrument equipping seismic sensors, geomagnetic sensors, a tsunami sensor and two kinds of thermometers was built. The 3 component of velocity type and acceleration types are used as seismic sensor. Three component fluxgate magnetometer and a proton-magnetometer are used as geomagnetic purpose. A differential hydrophone is used both as tsunami and seismic purposes. Two different kinds of thermometers, quartz and semiconductor types are used. The seismic signals are digitized by 20 bit A/D with 10OHz., are transmitted to the mixture part and are multiplexed with slow data such as geomagnetic. differential hydrophone and thermometer outputs which are sampled by 16 bit A/D with I Hz. All signals are transmitted to the land station through coaxial cable and are saved in DAT by real time. This prototype instrument was successfully tested at the ocean bottom 1 km off the coast of Hiratsuka, Japan. This experiment proved the powerfulness of these sensors in the real observation in the situation of co-observation of different items, but there remained the necessity to reduce the power consumption of A/D converter and its controller.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] 笠原 順三: "GeOーTOC計画の1990年スティタス・リポ-ト" 月刊海洋. 23. 233-237 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 都司 嘉宣,小山 盛雄: "海底津波計による津波観測について" 月刊海洋. 23. 238-243 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 行武 毅: "海底ケ-ブルを利用した地球科学観測の将来" 月刊海洋. 23. 289-294 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 笠原 順三: "GeOーTOCにおける地震学的計測" 月刊海洋. 23. 295-302 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 浜野 洋三: "海底ケ-ブルを用いた電磁場変動の観測" 月刊海洋. 23. 302-307 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 浜野 洋三,笠原 順三: "地震波で探る地球の内部ー海底につくる観測ステ-ションー" Newton. 12(4). 102-107 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kasahara, J.: "Status report of GeO-TOC project in 1990" Kaiyo Monthly. 23. 233-237 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tsuji, Y., and M. Koyama: "Tsumami observation using deep sea tsunami-meter" Kaiyo Monthly. 23. 238-243 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yukutake, T.: "Future system in geoscience using submarine cable" Kaiyo Monthly. 289-294 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kasahara, J.: "Seismic measurement in GeO-TOC project" Kaiyo Monthly. 295-302 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Hamano, Y.: "Observation of Geomagnetic field variation using submarine cable" Kaiyo Monthly. 302-307 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Hamano, Y., and J. Kasahara: "Study of earth's interior by seismic waves-Build of geoscience station in the ocean bottom-" Newton. 12. 102-107 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 笠原 順三: "GeOーTOC計画の1990年スティタス・リポ-ト" 月刊海洋. 23. 233-237 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 都司 嘉宣,小山 盛雄: "海底津波計による津波観測について" 月刊海洋. 23. 238-243 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 行武 毅: "海底ケ-ブルを利用した地球科学観測の将来" 月刊海洋. 23. 289-294 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 笠原 順三: "GeOーTOCにおける地震学的計測" 月刊海洋. 23. 295-302 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 浜野 洋三: "海底ケ-ブルを用いた電磁場変動の観測" 月刊海洋. 23. 302-307 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 浜野 洋三,笠原 順三: "地震波で探る地球の内部ー海底につくる観測ステ-ションー" Newton. 12(4). 102-107 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 笠原 順三,浜野 洋三,行武 毅: "太平洋横断海底通信ケ-ブル利用による地球科学観測の概要" 月刊海洋. 22. 447-451 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 浜野 洋三,鈴木 欣也: "海底ケ-ブルの技術について" 月刊海洋. 22. 452-456 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 笠原 順三,片尾 浩: "太平洋横断ケ-ブルと地震観測" 月刊海洋. 22. 457-462 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 都司 嘉宣: "太平洋横断ケ-ブルと津波観測" 月刊海洋. 22. 463-468 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 行武 毅,浜野 洋三: "太平洋海域での地球電磁気連続観測" 月刊海洋. 22. 469-475 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 島崎 邦彦: "デ-タ利用とポセイドン計画" 月刊海洋. 22. 499-503 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 笠原順三,片尾浩: "太平洋横断ケ-ブルと地震観測" 月刊 海洋科学. 7月号(予定). (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 都司嘉宜: "太平洋横断ケ-ブルと津波観測" 月刊 海洋科学. 7月号(予定). (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 行武毅,浜野洋三: "海底ケ-ブル利用の電磁気観測" 月刊 海洋科学. 7月号(予定). (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 島崎邦彦: "デ-タ利用とポセイドン計画" 月刊 海洋科学. 7月号(予定). (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 行武毅,笠原順三,浜野洋三: "海底ケ-ブル利用計画の概要" 月刊 海洋科学. 7月号(予定). (1990)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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