2005 Fiscal Year Final Research Report Summary
Segmentation, subsurface structure, earthquake history, and seismic hazard evaluation of long active faults
| Project/Area Number |
16200050
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geography
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| Research Institution | Kyoto University |
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Principal Investigator |
OKADA Atsumasa Kyoto University, Graduate School of Science, Professor, 大学院・理学研究科, 教授 (90086174)
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| Co-Investigator(Kenkyū-buntansha) |
TAKEMURA Keiji Kyoto University, Graduate School of Science, Professor, 附属地球熱力学研究施設, 教授 (00201608)
TSUTSUMI Hiroyuki Kyoto University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (60284428)
MIYAUCHI Takahiro Chiba Univeisity, Faculty of Science, Associate Professor, 理学部, 助教授 (00212241)
KUMAMOTO Takashi Okayama University, Faculty of Science, Associate Professor, 理学部, 助教授 (60285096)
TODA Shigeru Aichi University of Education, Associate Professor, 教育学部, 助教授 (40293732)
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| Project Period (FY) |
2004 – 2005
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| Keywords | Active fault / Fault segmentation / Subsurface structure / Earthquake history / Slip rate / Timing of initiation of faulting / Timing of most recent faulting / Forecast of large earthquakes |
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| Research Abstract |
In this project, we have conducted various researches on large active faults in Japan. In northwestern Hokkaido, crustal shortening rate was estimated for the Teshio fault zone (Echigo et al.,2006). In Tohoku district, slip rates and earthquake history were constructed for the active faults in Nagai and Aizu basins (Nakamura et al.,2006). After the 2004 Mid-Niigata Prefecture earthquake, Kim and Okada (2005) conducted geomorphic survey of the epicentral area. High-density gravity survey was also conducted by Toda et al.(2005) in conjunction with seismic reflection survey by ERI, University of Tokyo. In Kinki district, Ishiyama and Mueller (2005) examined relationship between surface deformation and subsurface fault structure for the Yoro-Kuwana fault zone. Komatsubara (2006) constructed slip rate distribution of the fault zone on the western margin of Lake Biwa : the maximum slip rate of 1.2-2.3 mm/yr is identified along the central portion of the fault zone. Toda (2006) compiled data on seismic reflection profiles and gravity surveys in Kinki district and discussed tectonic evolution of the study area. Nishiyama et al.(2005) identified faults that ruptured during the 1662 Kanbun earthquake. Okada (2006) pointed out that the last faulting event on the Median Tectonic Line in Shikoku triggered rupture of the Arima-Takatsuki fault zone. In central Kyushu, slip rates and paleoseismic activities of normal faults in Beppu and Unzen grabens were examined by field mapping and trenching studies (Takemura et al.,2005;Takemura,2006;Matsuoka et al.,2005). In order to better predict strong ground motion associated with large earthquakes on active faults, fault parameters and their statistical treatment were discussed by Kumamoto (2005,2006) and Kumamoto and Hamada (2005).
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[Journal Article] Estimate of the crustal shortening in late Quaternary in Teuri-Haboro area south part of Teshio fault zone, northern part of Hokkaido2006
Author(s)
Echigo, T., Okada, S., Oda, S., Kimura, H., Morishita, N.
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Journal Title
Earth Monthly Special Issue 54
Pages: 127-135
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Lithostratigraphy and sedimentary environments of the hominid-bearing Pliocene-Pleistocene Konso Formation in the southern Main Ethiopian Rift, Ethiopia.2006
Author(s)
Nagaoka, S., Katoh, S., oldeGabriel, G., Sato, H., Nakaya, H., Beyene, Y., Suwa, G.
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Journal Title
Palaeogeography, Palaeoclimatology, Palaeoecology 216
Pages: 333-357
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Late Quaternary faulting along the western margin of the Poronaysk lowland in central Sakhalin, Russia2005
Author(s)
Tsutsumi, H., Suzuki, Y., Kozhurin, A., Goto, H., Okumura, K., et al.
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Journal Title
Tectonophysics 407
Pages: 257-268
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Lithostratigraphy and sedimentary environments of the hominind-bearing Pliocene-Pleistocene Konso Formation in the southern Main Ethiopian Rift, Ethiopia.2005
Author(s)
Nagaoka, S., Katoh, S., oldeGabriel, G., Sato, H., Nakaya, H., Beyene, Y., Suwa, G.
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Journal Title
Palaeogeography, Palaeoclimatology, Palaeoecology 216,
Pages: 333-357
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Geomorphology, kinematic history, and earthquake behavior of the active Kuwana wedge-thrust anticline, central Japan2004
Author(s)
Ishiyama, T., Mueller, K., Togo, M., Okada, A., Takemura, K.
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Journal Title
J. Geophys. Res. 109, B12408,
Pages: doi:10.1029/2003JB002547,(20)
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Geomorphology, kinematic history, and earthquake behavior of the active Kuwana wedge-thrust anticline, central Japan2004
Author(s)
Ishiyama, T., Mueller, K., Togo, M., Okada, A., Takemura, K.
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Journal Title
J.Geophys.Res. 109, B12408
Pages: doi:10.1029/2003JB002547
Description
「研究成果報告書概要(欧文)」より
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