Geological survey for the recurrence interval of the tsunami in the Indian Ocean at Sri Lanka
| Project/Area Number |
20403002
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Natural disaster science
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| Research Institution | Osaka City University |
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Principal Investigator |
HARAGUCHI Tsuyoshi Osaka City University, 大学院・理学研究科, 准教授 (70372852)
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| Co-Investigator(Kenkyū-buntansha) |
YOKOYAMA Yusuke 東京大学, 海洋研究所, 准教授 (10359648)
GOTO Kazuhisa 千葉工業大学, 惑星探査研究センター, 上席研究員 (10376543)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
Fiscal Year 2010: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2009: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2008: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
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| Keywords | インド洋大津波 / スリランカ / 巨大津波 / 再来間隔 / 津波リスク / 津波堆積物 / 津波 / 災害 / 海洋科学 / 年代分析 |
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| Research Abstract |
We took drilling core samples at some locations from southwest to east coasts of Sri Lanka to estimate the recurrence interval of large tsunamis in the Indian Ocean. Possible tsunami sand layers intercalated in the peat layer in each core. Our study revealed that the possible tsunami layers were deposited every 600-1000 years interval in the 7000 years sedimentary record. The distribution of the tsunami deposits can be explained by the numerical modeling results.
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Report
(4 results)
Research Products
(13 results)
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[Journal Article] Historic 1771 Meiwa tsunami confirmed by high-resolution U/Th dating of massive Porites coral boulders at Ishigaki Island in Ryukyus2010
Author(s)
Araoka, D, M. Inoue, A. Suzuki, Y. Yokoyama, R.L. Edwards, H. Cheng, H. Matsuzaki, H. Kan, N. Shikazono, H. Kawahata
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Journal Title
Related Report
Peer Reviewed
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[Presentation] A Sedimentary Record of the Tsunami Recurrence in Sri Lanka.2009
Author(s)
Goto K., Haraguchi, T., Ratnayake, N.P., Amarasingha, A.V.P., Yokoyama, Y., Tsujimoto, A., Yoshinaga, Y., Takahashi J., Imamura I.
Organizer
International symposium on : Estimating the Recurrence interval and behavior of tsunamis in the Indian Ocean via a Survey of Tsunami related Sedimentation.
Place of Presentation
つくば
Year and Date
2009-03-19
Related Report
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