Reconstructions of seasonality of sea surface temperature and salinity in the tropics during the last glacial maximum based on a fossil coral
| Project/Area Number |
21740387
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Geochemistry/Astrochemistry
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| Research Institution | The University of Tokyo |
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Principal Investigator |
INOUE Mayuri 東京大学, 大気海洋研究所, 助教 (20451891)
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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 |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 最終氷期最盛期 / 化石サンゴ / 気候変動 / 熱帯域 / 微量元素 |
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| Research Abstract |
The magnitude of cooling of sea surface temperature(SST) during the last glacial maximum(LGM) in tropical to subtropical regions remains controversial. We conducted Sr/Ca andδ^<18> O measurements on a coral(Porites sp.) yielding a<230>^Th age of 22 ka that was retrieved from Vanuatu in the southwest Pacific. Our results indicated large, seasonal SST changes(~ 5℃), in particular, large cooling during the austral winter, at the LGM as compared to the present(<3℃). In addition, if the previously reported slight freshening around Vanuatu during the LGM is assumed, then a simple mathematical mass balance model indicates a decrease in the mean annual SST of 4. 5. 5℃.
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Report
(4 results)
Research Products
(29 results)
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[Journal Article] Estimate of calcification responses to thermal and freshening stresses based on culture experiments with symbiotic and aposymbiotic primary polyps of a coral, Acropora digitifera.2012
Author(s)
M. Inoue, K. Shinmen, H. Kawahata, T. Nakamura, Y. Tanaka, A. Kato, C. Shinzato, A. Iguchi, H. Kan, A. Suzuki, K. Sakai
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Journal Title
Global and Planetary Change
Volume: (in press)
Related Report
Peer Reviewed
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[Journal Article] Abrupt shift toward cooler condition in the earliest 20th century detected in a 165 year coral record from Ishigaki Island, southwestern Japan2010
Author(s)
Mishima, M., Suzuki, A., Nagao, M., Ishimura, T., Inoue, M., Kawahata, H
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Journal Title
Geophysical Research Letters
Volume: 37
Issue: 15
DOI
Related Report
Peer Reviewed
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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 the Ryukyus, Japan2010
Author(s)
Araoka, D., Inoue, M., Suzuki, A., Yokoyama, Y., Edwards, R. L., Cheng, H., Matsuzaki, H., Kan, H., Shikazono, N., Kawahata, H
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Journal Title
Geochemistry, Geophysics, Geosystems
Volume: 11
Issue: 6
DOI
Related Report
Peer Reviewed
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