SEA SURFACE TEMPERATURE VARIATION DURING LAST GLACIAL MAXIMUM AT WEST TROPICAL PACIFIC

LU Bo; LI Tiegang; YU Xinke; CHANG Fengming; NAN Qingyun

doi:10.3724/SP.J.1140.2010.04031

2010 Vol. 30, No. 4

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Article navigation > Marine Geology & Quaternary Geology > 2010 > 30(4): 31-38

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LU Bo, LI Tiegang, YU Xinke, CHANG Fengming, NAN Qingyun. SEA SURFACE TEMPERATURE VARIATION DURING LAST GLACIAL MAXIMUM AT WEST TROPICAL PACIFIC[J]. Marine Geology & Quaternary Geology, 2010, 30(4): 31-38. doi: 10.3724/SP.J.1140.2010.04031

Citation:

LU Bo, LI Tiegang, YU Xinke, CHANG Fengming, NAN Qingyun. SEA SURFACE TEMPERATURE VARIATION DURING LAST GLACIAL MAXIMUM AT WEST TROPICAL PACIFIC[J]. Marine Geology & Quaternary Geology, 2010, 30(4): 31-38. doi: 10.3724/SP.J.1140.2010.04031

SEA SURFACE TEMPERATURE VARIATION DURING LAST GLACIAL MAXIMUM AT WEST TROPICAL PACIFIC

1. Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 10 July 2010

Revised Date: 25 July 2010

Abstract

Abstract

The west tropical Pacific is the most vigorous one among global ocean-atmosphere interaction areas, as a significant part of Earth's climate system. To obtain the Sea Surface Temperature (SST) variation during the Last Glacial maximum (LGM) in this area, a gravity core WP7 from Ontong-Java plateau and some other cores were chosen. By solving the equations consisting of G.ruber's shell Mg/Ca, oxygen isotopes (δ18Oc) and SST, the impact upon G.ruber's shell Mg/Ca brought by seawater salinity was eliminated and SST estimation was obtained. The result shows that SST at west tropical Pacific is about 4.5℃ lower during LGM than in Late Holocene, and in the heart area of West Pacific Warm Pool(where modern SST is higher than 29℃) is about 3.9℃, smaller than 5.8℃ of the tropical Indian Ocean, and close to the figure of 3.6℃ in the east tropical Pacific, which may be the result of eastward migration and shrinking of West Pacific Warm Pool.
- Last Glacial Maximum /
- G.ruber /
- Mg/Ca /
- Sea surface temperature /
- West tropical Pacific

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References

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