Speleothems as past-tsunami archives over the last several centuries
| Project/Area Number |
24654159
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Geology
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| Research Institution | Tohoku University |
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Principal Investigator |
YAMADA Tsutomu 東北大学, 理学(系)研究科(研究院), 助教 (50321972)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 鍾乳石 / 津波履歴 / 東北地方 |
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| Outline of Final Research Achievements |
This study aim to investigate potential of speleothems as past-tsunami archives and to retrieve tsunami history over the past several centuries on the Pacific side of Northeast Japan. The disaster situations of limestone caves at Shinmei-saki and Minato-machi (Kesennnuma, Miyagi Prefecture) attached by the Great East Japan Earthquake and subsequent tsunami were surveyed. Remains of some marine organisms as well as fine-grained siliciclastic sediments were found on the surface of several speleothems. These impurities as a marker of tsunami inundation will be fixed by calcium carbonate and be incorporated into the speleothem. Some speleothems collected from lower-elevation site have growth hiatuses which may indicate influence of past-tsunami inundations.
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Report
(5 results)
Research Products
(4 results)
