%0 Journal Article
%T Imprint of solar activity on Nanjing stalagmite annual layer thickness sequence during the Last Glacial Maximum
%A WU Jiangying
%A SHAO Xiaohua
%A KONG Xinggong
%A WANG Yongjin
%A <br>WU
%A Jiangying
%A SHAO
%A Xiaohua
%A KONG
%A Xinggong
%A WANG
%A Yongjin
%J 科学通报(英文版)
%D 2006
%I 
%X A 3000-year-long stalagmite chronology from Hulu Cave near Nanjing was established by counting annual layers under microscope. Based on the 230Th age, this chronology covers the period 24-21 kaBP, within the Last Glacial Maximum (LGM). Two proxies, annual layer thickness and gray level were measured along the growth axis of the stalag-mite profile in order to establish a high-resolution East Asian monsoon history during the LGM. The high correlation coefficient (r = 0.55) between the two proxies suggests that both of them were controlled by a common factor, possibly reflecting changes in the strength of summer monsoon circulation and its pre-cipitation. Low frequency variations of the annual layer thickness, ranging from centennial to millennial scales, are approximately in agreement with the 10Be-flux recorded in the Greenland ice core, indi-cating that changes in East Asian monsoon strength might be forced by solar outputs during the LGM pe-riods. In support of this, Fourier power spectrum analysis of the annual layer thickness showed certain decadal to centennial-scale cycles that agree well with the periodicities of solar activity.
%K Nanjing stalagmite
%K annual layer sequence
%K gray level
%K solar activity
%K Last Glacial Maximum<br>冰川作用极盛期
%K 太阳活动
%K 石笋
%K 年层序列
%K 南京
%K 古气候
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=36E0A9F713F411601AE59CE35A7FFD5D&yid=37904DC365DD7266&vid=987EDA49D8A7A635&iid=E158A972A605785F&sid=5319469C819FCFF1&eid=C66DE7562B0326E2&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=2&reference_num=36