浮游有孔虫壳体Mg/Ca值——<i>SST</i>的替代性指标

陈萍; 方念乔; 胡超涌; 丁旋

Volume 29 Issue 6

Jun. 2004

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Article Navigation > Earth Science > 2004 > 29(6): 697-702

CHEN Ping, FANG Nian-qiao, HU Chao-yong, DING Xuan, 2004. Mg/Ca Ratio in Planktonic Foraminifera Shells: A Proxy for the SST. Earth Science, 29(6): 697-702.

Citation:

CHEN Ping, FANG Nian-qiao, HU Chao-yong, DING Xuan, 2004. Mg/Ca Ratio in Planktonic Foraminifera Shells: A Proxy for the SST. Earth Science, 29(6): 697-702.

CHEN Ping, FANG Nian-qiao, HU Chao-yong, DING Xuan, 2004. Mg/Ca Ratio in Planktonic Foraminifera Shells: A Proxy for the SST. Earth Science, 29(6): 697-702.

Citation:

CHEN Ping, FANG Nian-qiao, HU Chao-yong, DING Xuan, 2004. Mg/Ca Ratio in Planktonic Foraminifera Shells: A Proxy for the SST. Earth Science, 29(6): 697-702.

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Mg/Ca Ratio in Planktonic Foraminifera Shells: A Proxy for the SST

1.
Department ofResources and Environment Engineering, Anhui University ofScience and Technology, Huainan 232001, China
2.
Institute of Marine Geology and Geophysics, China University ofGeosciences, Beijing 100083, China

Received Date: 2004-04-28
Publish Date: 2004-11-25

Abstract

Abstract

A series of Mg/Ca ratios of planktonic foraminifera shell Globigerinoides sacculifer in two cores in the NE Indian Ocean were measured by ICP-MS after careful cleaning and dissolving. The results show Mg/Ca ratio and δ¹⁸O change accordingly. The Mg/Ca ratio increases with the rise of temperature. This study demonstrates Mg/Ca ratio of planktonic foraminifera shell may serve as a proxy for the past sea surface temperatures (SST).The formula Mg/Ca=0.471 7exp (0.082 5*SST) was applied to calculating and the result shows that in low and middle latitudes, including the NE Indian Ocean, the difference of SST between LGM and the Holocene is about 4 ℃ which is higher than the 2 ℃ estimated by CLIMAP.
- planktonic foraminifera shells,
- Mg/Ca ratio,
- sea surface temperature

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References(20)

References

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