Abrupt climate change of EastAsian Monsoon at 130 kaBP inferred from a high resolu-tion stalagmite δ^(18)O record

查看全文 作　　者：JIANG [1]Xiuyang;WANG [1]Yongjin;KONG [1]Xinggong;WU [1]Jiangying;SHAO [1]Xiaohua;XIA [1]Zhifeng;CHENG [2]Hai

机构地区：[1]College of Geography Science, Nanjing Normal University, Nanjing 210097, China;[2]Department of Geology and Geophysics, University of Minnesota,Minneapolis, MN 55455, USA

出　　处：《Chinese Science Bulletin》索引2005年第50卷第23期,共5页

基　　金：This work was supported by National Excellent Doctoral Dissertation of China(Grant No.200227);the National Outstanding Youth Foundation of China(Grant No,40225007). 摘　　要：230Th ages and oxygen isotope data of a stalagmite from Shanbao Cave in Hubei Province characterize thEast Asian Monsoon precipitation from 133 to127 ka. Thdecadal-scale high-resolution δ18O record reveals a detailedtransitional process from the Penultimate Glaciation to thLast Interglaciation. As established with 230Th dates, the agof the Termination II is determined to be 129.5±1.0 kaBPwhich supports the Northern Hemisphere insolation as thtriggers for the ice-age cycles. In our δ18O record, the glacialinterglacial fluctuation reaches about 4‰, almost the samlevel as in other Asian Monsoon cave stalagmite δ18O recordThe transition of the glacial/interglacial period in our recordcan be recognized as four stepwise stages, among which, arapid rise of monsoon precipitation follows the stage o“Termination II pause”. The rapid rise is synchronous withthe abrupt change of global methane concentration, whichreflects that an increase in both Asian Monsoon precipitationand tropical wetland plays an important role in the globaclimate changes. 关键词：东亚季风降雨量气候变化石笋氧同位素 U/Th测年

相关文献

参考文献（2）
引证文献（10）
耦合文献（8）

参考文献(2)

引证文献(10)

耦合文献(8)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Abrupt climate change of EastAsian Monsoon at 130 kaBP inferred from a high resolu-tion stalagmite δ^(18)O record

参考文献(2)

引证文献(10)

耦合文献(8)

用户提示