A high-resolution stalagmite O-C isotope record from Nanjing and its rapid response to climatic events

作     者：WU Jiangying WANG Yongjin CHENG Hai CHEN Jun 

作者机构：Earth Science DepartmentNanjing UniversityNanjing 210093China Geography CollegeNanjing normal UniversityNanjing 210097China Geology and Geophysics DepartmentMinnesota University 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2002年第47卷第2期

页      面：139-143页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：This work was supported by the National Natural Science Foundation of China (Grant No. 49972055) 

主　　题：Dansgaard-Oeschger cycle East Asian monsoon climate stalagmite. 

摘      要：Here we discussed rapid response of the cave temperature and vegetation to the four Dansgaard-Oeschger cold and warm cycles during 50-40 kaBP based on results of oxygen and carbon stable isotopic compositions from a stalagmite in Tangshan, Nanjing. It is found that the amount of C3 vegetation relative to C4-type declines during the D-O warm events, indicating the decrease of the effective mete-oric precipitation. Compared with O-isotope records of the Greenland ice core, the stalagmite record displays a very similar pattern to Greenland ice core record over the dec-ade-century time scale, suggesting that the changes of the East Asian monsoon climate are in accordance with the high-latitude polar climate in the short-term time scale. The age of the ice-rafted H5 event in the stalagmite record, how-ever, preceded that of Greenland ice cores by 2 ka. This out of phase between the remote areas cannot be yet proven be-cause the two time scales were determined from different dating methods.