Speleothemâ€derived Asian summer monsoon variations in Central China, 54â€“46 ka
- Permanent Link:
- Speleothemâ€derived Asian summer monsoon variations in Central China, 54â€“46 ka
- Series Title:
- Journal of Quaternary Science
- Zhou, Houyun
- Publication Date:
- Subjects / Keywords:
- Stalagmite ( local )
Î”18o Uâ€“Th Ages ( local )
Climate Change ( local )
Central China ( local )
Late Pleistocene ( local )
- serial ( sobekcm )
- The oxygen isotope signature (Î´18O) of stalagmite SI3 collected from Shizi Cave in northâ€east Sichuan Province provides an Asian Summer Monsoon (ASM) record in Central China for the period 54â€“46â€‰ka. The SI3 Î´18O record clearly shows a negative Î´18O excursion centred around 49.4â€‰ka, which was reported in Hulu Cave in East China but not identified in the speleothem records from Southâ€west China. As a whole, this record displays a higher coherence with the two Hulu records from East China than with the speleothem Î´18O records from Southâ€west China, suggesting that at 54â€“46â€‰ka, Central China was influenced more by the East Asian Summer Monsoon than by the Indian Summer Monsoon. It also displays a significant negative Î´18O excursion at 47.5â€“46.6â€‰ka, which is not clearly documented in two other speleothem Î´18O records previously reported from Southâ€west China. This suggests that details of the Greenland interstadial 12 warrant further investigations in future in monsoonal China. The SI3 Î´18O record displays more significant centennialâ€scale variations than the other four speleothem Î´18O records from East and Southâ€west China, which may be due to the fact that the study site is closer to the northâ€west boundary of the ASM and more sensitive to variations of the ASM than East and Southâ€west China. Copyright © 2011 John Wiley & Sons, Ltd.
- Original Version:
- Journal of Quaternary Science, Vol. 26, no. 8 (2011-07-26).
- Source Institution:
- University of South Florida Library
- Holding Location:
- University of South Florida
- Rights Management:
- This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.
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