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Simultaneous determination of location of ocean-bottom criistal-deformatioil stations and 3D acoustic velocity profile improvements in marine geodesy

Research Project

Project/Area Number 12304023
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 InstitutionNagoya University

Principal Investigator

ANDO Masataka  Nagoya University, Graduate School of Environmental Studies, Professor, 大学院・環境学研究科, 教授 (80027292)

Co-Investigator(Kenkyū-buntansha) TADOKORO Keiichi  Nagoya University, Graduate School of Environmental Studies, Assistant Professor, 大学院・環境学研究科, 助手 (70324390)
YAMADA Isao  Nagoya University, Graduate School of Environmental Studies, Professor, 大学院・環境学研究科, 教授 (60022670)
HIROHARA Kazuro  Nagoya University, Graduate School of Environmental Studies, Professor, 大学院・環境学研究科, 教授 (40165197)
片尾 浩  京都大学, 防災研究所, 助教授 (80221878)
満澤 巨彦  海洋科学技術センター, 研究員
Project Period (FY) 2000 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥48,400,000 (Direct Cost: ¥46,000,000、Indirect Cost: ¥2,400,000)
Fiscal Year 2003: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2002: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2001: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2000: ¥38,000,000 (Direct Cost: ¥38,000,000)
KeywordsCrustal Deformation / GPS / Ultarasonic waves / Determination of Locations / Acoustic velocity profile / Development of a measurement system / Kinematic GPS / Acoustic ranging / 海底地殻変動 / 南海トラフ / 駿河湾 / 静岡県水産試験場 / プレート境界地震
Research Abstract

We have developed a observation system to measure seafloor crustal deformation. It is a composite system using a kinematic GPS technique for positioning an onboard transducer and an acoustic technique for ranging between the onboard and seafloor transducers. We accomplished repeated measurements at three sites with a total of seven seafloor stations at depths 700-1004 m in the Surtiga Bay. At the first site, we measured to locate two seafloor transponders five times for two month in 2002. We obtained for the single determination of each seafloor transducer the standard errors of 4-9 cm and 4-13cm for horizontal and vertical locations, respectively, and for the repeated, determination the standard errors of 16-20 cm and 31-44 cm for the horizontal and vertical component, respectively. At each of the second and third sites we located two seafloor transducers two times in each year of 2002 and 2003. The errors in the single and repeated determinations within single years are quite similar to those of the first site, but the differences in location of seafloor transducers between 2002 and 2003 are 3 to 10 times larger than the above results, suggesting that some unknown but simple errors are involved in the measurements. We believe that this can be solved in next measurements carried out in 2004. It is thus concludes that the system developed in this study can be applied to observations of seafloor crustal deformation with a tolerable allowance level

Report

(5 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 安藤 雅孝: "南海トラフの巨大地震"建築雑誌. 118. 12-15 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 安藤 雅孝: "超音波で地震のメカニズムを知る"超音波TECHNO. 16. 9-14 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] ANDO Masataka: "Large earthquakes along the Nankai Trough"Journal of Architecture and Building Science. Vol.118,No.1503, March. 12-15 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] ANDO Masataka: "Next Coming Large Earthquake along the Nankai Trough"Journal of Japanese Scientists. Vol.38, November. 22-27 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 安藤 雅孝: "南海トラフの巨大地震"建築雑誌. 118・1503. 12-15 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 安藤 雅孝: "超音波で地震のメカニズムを知る"超音波TECHNO. 16・2. 9-14 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 安藤雅孝: "巨大地震の予知に関する最近の動向"電気評論. 87・10. 16-22 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 安藤雅孝: "日本の半分を襲う複合巨大地震"日経サイエンス. 32・10. 34-39 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 安藤雅孝: "電磁気学的手法による地震予知-長期的な観測の重要性"電気設備学会誌. 22・8. 593-594 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 安藤雅孝他: "東海地震がわかる本"東京新聞出版局. 226 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 田所敬一 他: "音響測距-GPSリンクによる海底地殻変動観測システムの開発"地学雑誌. 110. 355-361 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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