Paleotsunami research at small islands for better estimating tsunami source model
Project/Area Number |
26302007
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 海外学術 |
Research Field |
Geology
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Research Institution | Tohoku University |
Principal Investigator |
Goto Kazuhisa 東北大学, 災害科学国際研究所, 准教授 (10376543)
|
Co-Investigator(Kenkyū-buntansha) |
菅原 大助 ふじのくに地球環境史ミュージアム, その他の部局等, 准教授 (50436078)
中村 教博 東北大学, 高度教養教育・学生支援機構, 教授 (80302248)
|
Research Collaborator |
Goff James
Chague-Goff Catherine
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Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000)
Fiscal Year 2016: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2014: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
|
Keywords | 津波堆積物 / 津波 / 島嶼 / 波源 |
Outline of Final Research Achievements |
This study investigated geological evidence of paleotsunami at the islands near mainland of Japan, New Zealand, and United Sates of America. At Hachijo Island in Japan, we found numerous boulders on top of the 5 meter high cliff. Water tank experiment and numerical modeling revealed that these boulders can be explained by high storm wave although tsunamis with shorter wave period can also move these boulders. At Chatham Island in New Zealand, we identified boulders and sand to gravel sheet were deposited together. Field evidence as well as numerical modeling results may imply that these geological evidences could be explained by trans-Pacific tsunamis such as generated along Peru-Chile Trench, although further detail modeling is required. In Hawaii Islands, we identified possible evidence of 1946 Aleutian tsunami. These evidence would be useful to constraint the source model of this tsunami event.
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Report
(4 results)
Research Products
(9 results)
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[Presentation] Evidence for the 1946 Aleutian and 1960 Chile tsunamis in Shinmachi, Hilo, Hawaii2016
Author(s)
Chague-Goff, C., Goto, K., Fogg, J., Gadd, P., Dudley, W., Sugawara, D., Nakamura, N.
Organizer
2016 AGU Fall Meeting
Place of Presentation
サンフランシスコ(米国)
Year and Date
2016-12-15
Related Report
Int'l Joint Research
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[Presentation] A modified time-temperature relationship for titanomagnetite and its application to igneous erratic boulders in Hachijo Island, Japan2016
Author(s)
Tonosaki, T., Nakamura, N., Goto, K., Sato, T., Watanabe, M.
Organizer
2016 AGU Fall Meeting
Place of Presentation
サンフランシスコ(米国)
Year and Date
2016-12-14
Related Report
Int'l Joint Research
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[Presentation] Numerical modeling on the cliff-top boulder transport by extreme waves at Hachijo Island, Japan2015
Author(s)
Watanabe, M., Goto, K., Imamura, F., Sugawara,D., Nakamura, N., Tonosaki, T.
Organizer
Arthur Holmes Meeting 2015, The Geological Society
Place of Presentation
ロンドン地質学会(イギリス・ロンドン)
Year and Date
2015-09-25
Related Report
Int'l Joint Research