Holocene Climate Cycles in Northwest Margin of Asian Monsoon

• Published in: Chinese geographical science 2012-08, Vol.22 (4), p.450-461
• Main Authors: Li, Yu, Wang, Nai’ang, Li, Zhuolun, Zhou, Xuehua, Zhang, Chengqi
• Format: Article
• Language: English
• Subjects: Asian monsoons; carbon; Carbon isotopes; climate; Climate science; Earth and Environmental Science; Geography; Holocene; Holocene climate; Lake basins; Lakes; luminescence; monsoon season; Monsoons; Organic carbon; Salinity variations; sediments; summer; Summer monsoon; Tidal waves; Topography; watersheds; wavelet; Wavelet analysis; Westerlies; 中纬度地区; 亚洲季风区; 代理服务器; 全新世; 循环; 有机碳含量; 气候周期; 西北缘
• ISSN: 1002-0063; 1993-064X
• DOI: 10.1007/s11769-012-0551-z

In the mid-latitude regions of the Asian continent, Zhuye Lake is located in the northwest margin of the Asian monsoon, where the modem climate is affected by the Asian monsoon and Westerlies. In this study, we investi- gated the absolutely dated Holocene records in Zhuye Lake for detecting the Holocene climate cycles. Totally, 14 14C dates and 6 optically simulated luminescence （OSL） dates are obtained from the QTH01 and QTH02 sections. The proxies of grain-size, total organic carbon content （TOC）, C/N and 813C are used for wavelet analysis, and the results show obvious -256, -512 and -1024-year climate cycles, which are consistent with the Holocene millennial and cen- tennial scale climate cycles in the typical Asian summer monsoon domain. In different parts of the Zhuye Lake, the Holocene sediments show variable climate cycles that are affected by the lake basin topography. In the Zhuye Lake, the Holocene climate cycles are mainly correlated with the solar-related Asian summer monsoon variability and the North Atlantic ice-rafting events.