The orbital scale evolution of regional climate recorded in a long sediment core from Heqing,China  

作　　者：SHEN Ji XIAO HaiFeng WANG SuMin AN ZhiSheng QIANG XiaoKe XIAO XiaYun 

机构地区：[1]Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China [2]Department of Geography,Harbin Normal University, Harbin150025,china [3]Institute of Earth and Environment, Chinese Academy of Sciences, Xi'an 710075, China

出　　处：《Chinese Science Bulletin》2007年第13期1813-1819,共7页

基　　金：the Key Project of the National Natural Science Foundation of China (Grant No: 40331003);National Outstanding Youth Fund (Grant No. 40625007)

摘　　要：Based on the analysis of carbonate content and loss on ignition for a long sediment core (737 m in length) drilled in Heqing, the orbital scale evolution of the Southwest Monsoon is revealed, by using overlapped spectral analysis and filter methods. It is shown that the obliquity cycle and precession cycle are the key factors for the Southwest Monsoon evolution and that the change of the global ice volume and the uplift of the Qinghai-Tibetan Plateau also impose great influences on it.Based on the analysis of carbonate content and loss on ignition for a long sediment core （737 m in length） drilled in Heqing, the orbital scale evolution of the Southwest Monsoon is revealed, by using overlapped spectral analysis and filter methods. It is shown that the obliquity cycle and precession cycle are the key factors for the Southwest Monsoon evolution and that the change of the global ice volume and the uplift of the Qinghai-Tibetan Plateau also impose great influences on it.

关 键 词：沉淀物 太平洋 季风 气候 

分 类 号：P46[天文地球—大气科学及气象学]