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...
Published in: | Science |
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Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
AMER ASSOC ADVANCEMENT SCIENCE
2004
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Subjects: | |
Online Access: | http://ir.ieecas.cn/handle/361006/11824 https://doi.org/10.1126/science.1091220 |
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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