Atmospheric Pb variations in Central Asia since 1955 from Muztagata ice core record, eastern Pamirs

查看全文 作　　者：LI [1]Zhen;YAO [1,2]Tandong;TIAN [1,2]Lide;XU [1,2]Baiqing;LI [1]Yuefang 机构地区：[1]Key Laboratory of Cryosphere and Environment, Chinese Academy of Sciences, Lanzhou 730000, China;[2]Laboratory of Environment and Process on Tibetan Plateau, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China 出　　处：《Chinese Science Bulletin》索引2006年第51卷第16期,共5页 基　　金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 40121101, 90102005);the Chinese Academy of Sciences (Grant No. KZCX3-SW-339);National Basic Research Program of China (Grant No. 2005CB422004). 摘　　要：A Muztagata ice core recovered at 7010 m altitude in East Pamirs provides a Pb concentration record from 1955 to 2000. The result reveals in- creasing Pb concentrations from 1955 to 1993, with two Pb concentration peaks in 1980 and 1993. After 1993, Pb concentrations in ice core show an obvi- ously declining trend. Analysis shows that the lead in the Muztagata ice core mainly came from anthropo- genic emissions from countries in Central Asia, while the local emission had little contribution. 关 键 词：冰核 慕士塔格山 铅 大气 中亚 帕米尔高原