中国海洋湖沼学报(英文版)2003，Vol.21Issue(1)：10-17,8.
Climatic Signals Recorded in Shells in Xingcuo Lake,Eastern Tibetan Plateau
Climatic Signals Recorded in Shells in Xingcuo Lake,Eastern Tibetan Plateau
摘要
Abstract
This paper presents the results of determining trace elements and δ13 C, δ18 O in Gy-raulus sibirica shell continuously preserved in Xingcuo Lake sediments in the recent 50 years. Bycoupling these indexes and instrumental meteorological data on its basin to determine the relationsamong them, we probed quantitatively the climatic signals recorded in Xingcuo Lake sediments.The results showed that gastropod shells in Xingcuo Lake were formed in warm seasons; that traceelements, and stable isotope in shells just recorded the climatic signals of the warm seasons insteadof that of the whole year; that Mg/Ca ratio and δ18O proxy had certain correlation with air tempera-ture in warm seasons, when the δ18 O proxy was more sensitive; with the average ratio of them being0.28 × 10-3/℃ and the variation rate dδ18 O/dT being 1.64 × 10-3/℃; that the Sr/Ca ratio andδ13C proxy, especially Sr/Ca ratio, had close correlation; and that dSr/Ca/dP was -0.045/mm.关键词
Xingcuo Lake/eastern Tibetan Plateau/trace elements/stable isotopesKey words
Xingcuo Lake/eastern Tibetan Plateau/trace elements/stable isotopes分类
海洋科学引用本文复制引用
..Climatic Signals Recorded in Shells in Xingcuo Lake,Eastern Tibetan Plateau[J].中国海洋湖沼学报(英文版),2003,21(1):10-17,8.基金项目
This work was funded by the Key Innovation Project of the Chinese Academy of Sciences (KZCX1 - 10- 02), the Natural Sci-ence Fundation of China (Grant: 49803001 ) and National "973" project and CAS Tibet Research ( No: G1998040800). （KZCX1 - 10- 02）
