OXYGEN ISOTOPE CHARACTERISTIC AND PALEOCEANOGRAPHIC VARIATIONS OF THE WESTERN PACIFIC WARM POOL SINCE PLIOCENE

GUO Jianqin; CHENG Xinrong; CHEN Ronghua; JIAN Zhimin

doi:10.3724/SP.J.1140.2010.03087

2010 Vol. 30, No. 3

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Article navigation > Marine Geology & Quaternary Geology > 2010 > 30(3): 87-95

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GUO Jianqin, CHENG Xinrong, CHEN Ronghua, JIAN Zhimin. OXYGEN ISOTOPE CHARACTERISTIC AND PALEOCEANOGRAPHIC VARIATIONS OF THE WESTERN PACIFIC WARM POOL SINCE PLIOCENE[J]. Marine Geology & Quaternary Geology, 2010, 30(3): 87-95. doi: 10.3724/SP.J.1140.2010.03087

Citation:

GUO Jianqin, CHENG Xinrong, CHEN Ronghua, JIAN Zhimin. OXYGEN ISOTOPE CHARACTERISTIC AND PALEOCEANOGRAPHIC VARIATIONS OF THE WESTERN PACIFIC WARM POOL SINCE PLIOCENE[J]. Marine Geology & Quaternary Geology, 2010, 30(3): 87-95. doi: 10.3724/SP.J.1140.2010.03087

OXYGEN ISOTOPE CHARACTERISTIC AND PALEOCEANOGRAPHIC VARIATIONS OF THE WESTERN PACIFIC WARM POOL SINCE PLIOCENE

1 College of Geo-Resources and Information, China University of Petroleum(East China), Dongying 257061, China;
2 State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China;
3 Second Institute of Oceanography, Laboratory of Submarine Geosciences, SOA, Hangzhou 310012, China

Received Date: 02 March 2010

Revised Date: 13 May 2010

Abstract

Abstract

As the global climate engine,the western Pacific warm pool is the hot issue concerning paleoceanography and paleoclimate research. Through the planktonic foraminifera oxygen isotope from ODP 130 at site 807A,we established the Astronomical Timescale for the past 4.5 Ma.The time resolution is better than 2~3 ka.We studied the depth of thermocline and the upper water column structure variation by the oxygen isotope changes of surface genus and sublayer genus of plantonic foraminifera.Combined with frequence analysis and cross frequence analysis with Earch Trace Parameter(ETP),we studied the evolution of western Pacific warm pool since Pliocene,especially during the stage of ice sheet formation at North Pool, and its response to earch orbit changes, that provided a scientific foundation for global climate evolution.
- western Pacific warm pool /
- oxygen isotope /
- thermocline /
- Milankovitch cycle /
- middle Pleistocene climate transition

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References

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