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Earth structure and earthquakes in Indonesia and Russia

Research Project

Project/Area Number 04044039
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionJoint Research
Research InstitutionThe University of Tokyo

Principal Investigator

GELLER Robert J.  Graduate School of Science, The University of Tokyo, Associate Professor, 大学院理学系研究科, 助教授 (40170154)

ゲラー・ロバート (1993)  東京大学, 大学院理学系研究科, 助教授

Co-Investigator(Kenkyū-buntansha) YANUAR  Meteorological and Geophysical Agency of Indonesia, Medan, Chief, パラパト観測所, 所長
SYNARJO  Meteorological and Geophysical Agency of Indonesia, Jakarta, Chief Technical off, 主任研究員
SOETARDJO R.  Meteorological and Geophysical Academy of Indonesia, Jakarta, Associate Chief, 次長
GUSIAKOV V.K.  Academy of Science of Russia, Computer Center Novosibirsk, Technical official, 上級研究員
IVASHENKO A.I.  Academy of Science of Russia, Institute of Marine Geology & Geophysics, Yuzhno-S, 地球物理研究所, 副所長
MIYATAKE Takashi  Earthquake Research Institute, The University of Tokyo, Lecturer, 地震研究所, 講師 (60126183)
TAKEO Minoru  Earthquake Research Institute, The University of Tokyo, Associate Professor, 地震研究所, 助教授 (00197279)
SHIMAZAKI Kunihiko  Earthquake Research Institute, The University of Tokyo, Professor, 地震研究所, 教授 (50012951)
SUETSUGU Daisuke  Building Research Institute Technical official, 建設技官(研究職)
NAKANISHI Ichiro  Faculty of Science, Hokkaido University, Associate Professor, 理学部, 助教授 (10164229)
MORIYA Takeo  Faculty of Science, Hokkaido University Associate Professor, 理学部, 助教授 (60001864)
SUNARIO  インドネシア気象庁, 主任研究員
YANUAR  インドネシア気象庁, パラパト観側所, 所長
R Soetardio  インドネシア気象庁, 次長
U K Gusiakov  ロシア科学アカデミー, 上級研究員
A I Ivashenk  ロシア科学アカデミー, 海底地球物理研究所, 副所長
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 1993: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1992: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsBroadband Seismology / 3-D Velocity Structure / Focal process / 地震観側 / インドネシア / ロシア
Research Abstract

Digital broadband seismograms are more or less continuously recorded at Yuzhno-Sakhalinsk in Russia and at Parapat, northern Sumatra, Indonesia. Parapat station is characterized by low noise at night, but large-amplitude noises appear for several hours in day time. Although the comparison between time of the day when the noises appear and daily temperature measured at Parapat did lead to a firm conclusion, the 1/f dependence of noise spectrum strongly suggests that the noises are due to temperature fluctuations caused by the radiative heat of the sun light.
The Russian and Japanese sides agree on that the second site for cooperative broadband seismic observation between Russia and Japan should be Kamenskoye in northern Kamchatka. The valuable data concerning the tsunami and aftershocks of the 1993 Japan Sea earthquake were successfully exchanged between Russian and Japanese scientists.
On the basis of the three-dimensional seismic velocity structure obtained by us, broadband digital seismograms at Parapat for various propagation paths are examined. The seismograms of Halmahere events show strong attenuation, which is consistent with very low seismic wave velocity in the Straits of Molucca shown in the three-dimensional structure.
Waveform analyses of digital broadband seimograms indicate that the 1993 Kushiro-Oki earthquake is characterized by high stress drop and that the 1993 Japan Sea earthquake is characterized by a marked differecne between the initial and overall rupture processes.

Report

(2 results)
  • 1993 Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] Puspito,N.T.他5名: "Three-dimensional P-wave velocity structure beneath the Indonesian region and its vicinity" Tectonophysics. 220. 175-192 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Tada,T.他2名: "Analysis of short‐period P waves from the 1989 Macquarie Ridge earthquake using a broadband array in Japan" Geophys.Res.Lett.20. 269-272 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Nakanishi,I.他4名.: "The 1993 Japan Sea Earthquake:Quake and Tsunamis devastate small town EOS,Trans." Geophys.Union. 74. 377-379 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Takeo,M.他2名: "The 1993 Kushiro‐Oki,Japan,earthquake:A high stress-drop event in a subducting slab." Geophys.Res.Lett.20. 267-2610 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] インドネシア広帯域地震研究グループ: "インドネシア・プラパットにおける広帯域地震観測(2)" 日本地震学会講演予稿集. 2. 346 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Puspito,N.T. et al.: "Three-dimensional P-wave velocity structure beneath the Indonesian region and its vicinity" Tectonophysics. 220. 175-192 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Tada,T. et al.: "Analysis of short-period P waves from the 1989 Macquarie Ridge earthquake using a broadband array in Japan" Geophys. Res. Lett.20. 269-272 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Nakanishi,I. et al.: "The 1993 Japan Sea Earthquake : Quake and Tsunamis devastate small town EOS, Trans. Amer." Geophys. Union. 74. 377-379 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Takeo,M. et al.: "The 1993 Kushiro-Oki, Japan, earthquake : A high stress-drop event in a subducting slab" Geophys.Res.Lett.20. 2607-2610 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Research Group for Broadband Seismology in Indonesia: "Broadband seismic observation with STS-2 at Prapat, Indonesia (2)" Programme and Abstracts, Seismol. Soc. Japan. 2. 346 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] P.Nnang,K.SHIMAZAKI,Y.Yameuabe,T.Miyatake.and K.Hirahora: "Threar-dimensimal P-wave velocity structure benerts the ludonesiau ragion" Tectouophysics. 220. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] K.OKANO & D.SUETSUGU: "Search for lower Mautle Hish-velocity 2ones beneath the deepest Kuril and Maricnu Eavtuquakos" Geophysical Research Letlers. 19. 745-748 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.IIDAKA & D.SUETSUGU: "Seismological Evidence for Metastable Olivine inside a Subducting Slcb" Nature. 356. 593-595 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] ゲラー・ロバート,末次 大輔,武尾 実,鷹野 澄,高橋 正義,阿部 勝征: "インドネシア・スマトラ島における広帯域地震観側" 地震学会ニュースレター. 3. 4-7 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] I.NAKANISHI: "The Novemben 13,1990 Easthquake off the Coast of the Primors kiy region the Eastern Russia" Geophysical Reseorch Letters. 19. 549-554 (1992)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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