High resolution reconstruction of past earthquakes and tsunami during last several hundreds using coral skeletons collected from Sumatra
Project/Area Number |
21684031
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Single-year Grants |
Research Field |
Stratigraphy/Paleontology
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Research Institution | Hokkaido University |
Principal Investigator |
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Project Period (FY) |
2009 – 2011
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Project Status |
Completed (Fiscal Year 2011)
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Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2010: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2009: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
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Keywords | 造礁性サンゴ骨格 / 地震 / 津波 / 安定同位体比 / 微量元素濃度 |
Research Abstract |
Reef corals record various environmental changes and events in their carbonate skeletons with annual bands for a few years. Geochemical analysis along growth axis of coral skeletons has been used as reconstruction of paleo-environments in high resolution weekly to monthly. In order to reconstruct past records of earthquake and tsunami, we collected 15 modern and fossil coral cores using underwater and land-based drilling from southern part of Pagai island, Mentawai islands, Sumatra, Indonesia. We analyzed concentration of trace elements, oxygen and carbon isotopes in coral skeletons. Trace element concentrations varied with sediment disturbance and terrestrial inputs due to tsunami. In addition, carbon isotopes in coral skeletons had a possibility as a quantitative proxy of coral living depth(solar irradiance) changes due to uplift/subsidence with earthquakes because carbon isotopes change with photosynthetic activity of symbiotic algae. These results suggested that coral skeletal structures and geochemical composition can reconstruction of environmental changes with earthquakes.
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Report
(4 results)
Research Products
(53 results)
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[Journal Article] Permanent El Nino during the Pliocene warm period not supported by coral evidence2011
Author(s)
Watanabe, T., A.Suzuki, S.Minobe, T.Kawashima, K.Kameo, K.Minoshima, Y.M.Aguilar, R.Wani, H.Kawahata, K.Sowa, T.Nagai, T.Kase
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Journal Title
Nature
Volume: 471
Issue: 7337
Pages: 209-211
DOI
Related Report
Peer Reviewed
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[Journal Article] Opposed trend of skeletal carbon isotopic ratios found in two different coral species collected from the same site : Genus-dependent responses2010
Author(s)
Shimamura, M., Hyeong, K., Watanabe, T., Irino, T., Yoo, C.M., Kim, W.S.
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Journal Title
Proceedings of the 11th International Coral Reef Symposium
Volume: 1
Pages: 90-94
Related Report
Peer Reviewed
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[Journal Article] Opposed trend of skeletal carbon isotopic ratios found in two different coral species collected from the same site : Genus-dependent responses2010
Author(s)
Shimamura, M., Hyeong, K., Watanabe, T., Irino, T., Yoo, C.M., Kim, W.S.
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Journal Title
Proceedings of the Eleventh International Coral Reef Symposium 2008
Pages: 87-91
Related Report
Peer Reviewed
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[Presentation] Pb concentration and isotopes in Pacific sclerosponge2010
Author(s)
Ohmori, K., Watanabe, T., Tanimizu, M., Matuoka, J., Shirai, K, J., Shirai, K
Organizer
2nd International Sclerochronology Conference
Place of Presentation
マインツ大学(ドイツ)
Year and Date
2010-07-26
Related Report
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[Presentation] A new method for estimating calcification rate of coral skeletons using a transparent X-ray 2D-imaging scanner (TATSCAN-X1) in conjunction with geochemical analyses2010
Author(s)
Sowa, K., Sakamoto, T., Nakamura, T., Sakai, S., Iijima, K., Watanabe, T
Organizer
2nd International Sclerochronology Conference
Place of Presentation
マインツ大学(ドイツ)
Year and Date
2010-07-26
Related Report
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[Presentation] Seasonal variations in nitrogen isotopic composition from Okinotori coral in the tropical Western Pacific : A new proxy for marine nitrate dynamics2010
Author(s)
Yamazaki, A., Watanabe, T., Ogawa, N., Ohkouchi, N., Shirai, K., Toratani, M., Uematsu, M.
Organizer
EGU General Assembly 2010
Place of Presentation
オーストリアセンター(Austria)
Year and Date
2010-05-06
Related Report
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[Presentation] A new method for estimating calcification rate of coral skeletons using a transparent X-ray 2D-imaging scanner (TATSCAN-X1) in conjunction with geochemical analyses2010
Author(s)
Sowa, K., Sakamoto, T., Nakamura, T., Sakai, S., Iijima, K., Watanabe, T.
Organizer
2nd International Sclerochronology Conference
Place of Presentation
Mainz, Germany
Related Report
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[Presentation] Pb concentration and isotopes in Pacific sclerosponge2010
Author(s)
Ohmori, K., Watanabe, T., Tanimizu, M., Matuoka, J., Shirai, K.
Organizer
2nd International Sclerochronology Conference
Place of Presentation
Mainz, Germany
Related Report
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[Presentation] Seasonal variations in nitrogen isotopic composition from Okinotori coral in the tropical Western Pacific : A new proxy for marine nitrate dynamics2010
Author(s)
Yamazaki, A., Watanabe, T., Ogawa, N., Ohkouchi, N., Shirai, K., Toratani, M., Uematsu, M.
Organizer
EGU General Assembly 2010
Place of Presentation
Vienna, Austria
Related Report
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