2012 Fiscal Year Final Research Report
Development of ocean bottom seismometer and pressure gauge for observation of earthquakes at plate boundary
Project/Area Number |
22540428
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Solid earth and planetary physics
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Research Institution | The University of Tokyo |
Principal Investigator |
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Co-Investigator(Renkei-kenkyūsha) |
SHIOBARA Hajime 東京大学, 地震研究所, 准教授 (60211950)
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Project Period (FY) |
2010 – 2012
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Keywords | 高精度圧力計 / 海底圧力・地震計 / 海底上下変動観測 / 広帯域観測 |
Research Abstract |
Ocean bottom seismometers are widely used for earthquake observation on sea floor at the present. However, a frequency band of observations is limited from 360s to 50Hz. Because an observation band of a pressure gauge is broad, addition of a pressure gauge to an ocean bottom seismometer is useful for study of earthquake generation. We developed an ocean bottom seismometer and pressure gauge, and carriedout observation in Nankai Trough region. In addition, the ocean bottom seismometer and pressure gauge was used for the aftershock observation for the 2011 Tohoku earthquake. The pressure gauges were recorded ocean tide, seismic waves and tsunamis of the 2011 event. The developed ocean bottom seismometer and pressure gauges are widely used for seafloor observation at the present.
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[Journal Article] Precise aftershock distribution of the2011 off the Pacific coast of Tohoku earthquake revealed by ocean bottom seismometer network2012
Author(s)
Shinohara, M., Y. Machida, T. Yamada, K.Nakahigashi, T. Shinbo, K. Mochizuki, Y. Murai, R. Hino, Y. Ito, T. Sato, H. Shiobara, K. Uehira, H. Yakiwara, K. Obana, N. Takahashi, S. Kodaira, K. Hirata, H. Tsushima, and T. Iwasaki
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Journal Title
Earth Planets Space
Volume: 64
Pages: 1137-1148
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[Journal Article] P-wave velocity structure in the southernmost source region of the2011 Tohoku earthquakes, off the Boso Peninsula deduced by an ocean bottom seismographic survey2012
Author(s)
Nakahigashi, K., M. Shinohara, K.Mochizuki, T. Yamada, R. Hino, T. Sato, K. Uehira, Y. Ito, Y. Murai, and T. Kanazawa
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Journal Title
Earth Planets Space
Volume: 64
Pages: 1149-1156
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[Journal Article] Aftershock observation of the 2011 off the Pacific coast of Tohoku Earthquake by using ocean bottom seismometer network2011
Author(s)
Shinohara, M., T. Yamada, K. Nakahigashi, S. Sakai, K. Mochizuki, K. Uehira, Y. Ito, R. Azuma, Y. Kaiho, T. No, H. Shiobara, R. Hino, Y. Murai, H. Yakiwara, T. Sato, Y. Machida, T. Shinbo, T. Isse, H. Miyamachi, K Obana, N. Takahashi, S. Kodaira, Y. Kaneda, K. Hirata, S. Yoshikawa, K. Obara, T. Iwasaki, and N. Hirata
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Journal Title
Earth Planets Space
Volume: 63
Pages: 835-840
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[Presentation] Precise aftershock distribution of the2011 off the Pacific coast of Tohoku earthquake revealed by ocean bottom seismometer network2012
Author(s)
Shinohara, M., Y. Machida, T. Yamada, K.Nakahigashi, T. Shinbo, K. Mochizuki, Y. Murai, R. Hino, Y. Ito, T. Sato, H. Shiobara, K. Uehira, H. Yakiwara, K. Obana, N. Takahashi, S. Kodaira, K. Hirata, H. Tsushima, and T. Iwasaki
Organizer
2012 AGU Fall Meeting
Place of Presentation
San Francisco USA
Year and Date
2012-12-03
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[Presentation] Hirata and OBS observation group2011
Author(s)
Shinohara, M., Y. Murai, R. Hino, T. Sato, H. Shiobara, K. Uehira, H. Miyamachi, S. Kodaira, Y. Kaneda, K.
Organizer
Aftershock Observation of the 2011 off the Pacific Coast of Tohoku Earthquake by Ocean Bottom Seismometer Network, Asia Oceania Geosciences Society 2011
Place of Presentation
台北中華民国
Year and Date
2011-08-12
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