Risk evaluation of coastal erosin caused by Nankai megathrust earthquakes
| Project/Area Number |
25750148
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Natural disaster / Disaster prevention science
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| Research Institution | The University of Tokyo (2015)
Chiba University (2013-2014) |
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Principal Investigator |
Obanawa Hiroyuki 東京大学, 工学(系)研究科(研究院), 特任研究員 (10422205)
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| Research Collaborator |
HAYAKAWA YUICHI 東京大学, 空間情報科学研究センター, 准教授 (70549443)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 海岸侵食 / 地盤沈下 / 南海トラフ / 地震 / 南海トラフ巨大地震 / リスク評価 |
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| Outline of Final Research Achievements |
Risk evaluation of coastal erosion caused by Nankai megathrust earthquake was carried out. Based on the historical records remarkable and cyclic land subsidence caused by mega earthquake occurred at Kochi coast up to 2 m and Shichiriohama up to 40 cm therefore those two areas were chosen for the study areas of this study. Calculation result with an existing equation for coastal erosion showed that 81 to 135 m erosion will occur at Kochi coast and 2 to 21 m erosion will occur at Shichiriohama after the mega earthquake. At Kochi coast 21% of the eroded area is building region and 11% of that is farm land where are residential and economic areas so direct damage by the coastal erosion will be relatively large. On the other hand at Shichiriohama large part (37%) of the eroded area is in the beach so the disaster damage will be relatively small.
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Report
(4 results)
Research Products
(23 results)
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[Presentation] Geomorphology and archaeology: mapping landforms around archaeological sites in Kayseri region using high-definition data2015
Author(s)
Hayakawa, Y.S., Obanawa, H., Yoshida, H., Naruhashi, R., Okumura, K. and Zaiki, M.
Organizer
International Geographical Union Regional Conference 2015 (IGU2015)
Place of Presentation
Moscow Russia
Year and Date
2015-08-17
Related Report
Int'l Joint Research
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[Presentation] Fusion between UAV-SfM and terrestrial laser scanner for field validation of satellite remote sensing2015
Author(s)
Kato, A., Obanawa, H., Hayakawa, Y.S., Watanabe, M., Yamaguchi, Y. and Enoki, T.
Organizer
International Geoscience and Remote Sensing Symposium 2015 (IGARSS 2015)
Place of Presentation
Milan Italy
Year and Date
2015-07-26
Related Report
Int'l Joint Research
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[Presentation] Mapping surface morphology and outcrop structures of hummocks in debris avalanche deposits using structure-from motion multi-view stereo photogrammetry2015
Author(s)
Hayakawa, Y.S., Obanawa, H., Yoshida, H., Naruhashi, R., Okumura, K., Zaiki, M. and Kontani, R.
Organizer
International Union for Quaternary Science (INQUA) 2015
Place of Presentation
Nagoya
Year and Date
2015-07-26
Related Report
Int'l Joint Research
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