DOI: 10.1016/j.palaeo.2015.09.037
论文题名: Extreme monsoon aridity episodes recorded in South China during Heinrich Events
作者: Han Z. ; Li X. ; Yi S. ; Stevens T. ; Chen Y. ; Wang X. ; Lu H.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 440 起始页码: 467
结束页码: 474
语种: 英语
英文关键词: Aridity
; East Asian monsoon
; Heinrich events
; OSL dating
; Sand hill
英文摘要: Geological records of climate change since the last glaciation in South China, a core area of the East Asian monsoon, are key to understanding secular variation in the monsoon system. However, with the exception of the speleothems, records from this area with independent age control are few. We investigated aeolian sand deposition on a sand hill on the shore of Poyang Lake in South China and reconstructed the chronological sequence of aeolian deposition using Optically Stimulated Luminescence (OSL) dating. Without exception, all aeolian sediments were deposited within seven periods that generally match the timing of Heinrich events and other cold periods in Greenland. We argue that aeolian sand accumulation in this region is most likely forced by extreme aridity driven by weakening of the summer monsoon, while the characteristics of this deposition are influenced by winter monsoon intensity. The monsoon shifts revealed here suggest a possible link between North Atlantic cooling and summer monsoon strength in South China, and support the intensities of cooling phases recorded in Greenland ice cores. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68733
Appears in Collections: 过去全球变化的重建
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作者单位: School of Geographic and Oceanographic Sciences, Nanjing University, XianlinDadao 163, Nanjing, China; Department of Earth Sciences, Uppsala University, Villavägen 16, Uppsala, Sweden
Recommended Citation:
Han Z.,Li X.,Yi S.,et al. Extreme monsoon aridity episodes recorded in South China during Heinrich Events[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,440