Timing, duration, and transitions of the Last Interglacial Asian Monsoon

Thorium-230 ages and oxygen isotope ratios of stalagmites from Dongge Cave, China, characterize the Asian Monsoon and low-latitude precipitation over the past 160,000 years. Numerous abrupt changes in O-18/O-16 values result from changes in tropical and subtropical precipitation driven by insolation...

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Bibliographic Details
Main Authors: Yuan, D. X., Cheng, H., Edwards, R. L., Dykoski, C. A., Kelly, M. J., Zhang, M. L., Qing, J. M., Lin, Y. S., Wang, Y. J., Wu, J. Y., Dorale, J. A., An, Z. S., Cai, Y. J., 袁东星
Format: Article in Journal/Newspaper
Language:English
Published: 2004
Subjects:
ICE-CORE RECORD
STABLE ISOTOPES
TERMINATION II
CLIMATE
PERIOD
PRECIPITATION
SPELEOTHEMS
HOLOCENE
EVENT
ice core
Online Access:http://dspace.xmu.edu.cn/handle/2288/60765
Description
Summary:Thorium-230 ages and oxygen isotope ratios of stalagmites from Dongge Cave, China, characterize the Asian Monsoon and low-latitude precipitation over the past 160,000 years. Numerous abrupt changes in O-18/O-16 values result from changes in tropical and subtropical precipitation driven by insolation and millennial-scale circulation shifts. The Last Interglacial Monsoon lasted 9.7+/-1.1 thousand years, beginning with an abrupt (less than 200 years) drop in O-18/O-16 values 129.3+/-0.9 thousand years ago and ending with an abrupt (less than 300 years) rise in O-18/O-16 values 119.6+/-0.6 thousand years ago. The start coincides with insolation rise and measures of full interglacial conditions, indicating that insolation triggered the final rise to full interglacial conditions.

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