海洋地质与第四纪地质2011，Vol.31Issue(4)：149-154,6.DOI:10.3724/SP.J.1140.2011.04149
青海湖地区温度和降雨量的一致变化——来自介形虫壳体Li/Ca比值和氧同位素的证据
SYNCHRONOUS VARIATIONS OF TEMPERATURE AND PRECIPITATION AT LAKE QINGHAI, INFERRED FROM LI/CA RATIOS AND Δ18O OF OSTRACOD SHELLS
摘要
Abstract
Based on the oxygen isotopic values and Li/Ca ratios from ostracod shells of the species of Eucypris inflate in Lake Qinghai, temperature and precipitation variations during the past millennium in this catchment were reconstructed. The good correlation (r=0. 5, n=59, p<0. 01) between Li/Ca ratios and Δ18o values of ostracod shells indicates that temperature changes corresponded well with precipitation variations during the past millennium. Synchronous variations of temperature and precipitation are also observed in the local meterological records and the climatic parameters inferred from Delingha and Dulan tree ring widths. We believe that the synchronous variation as such is a sole feature of East Asian summer monsoon, although the factors controlling this featue deserve further study.关键词
介形虫壳体/温度/降雨量/Li/Ca比值/氧同住素/青海湖Key words
Lake Qinghai/ostracod shells/precipitation/temperature/Li/Ca ratios/oxygen isotopic values分类
地质学引用本文复制引用
朱正杰,陈敬安,任世聪..青海湖地区温度和降雨量的一致变化——来自介形虫壳体Li/Ca比值和氧同位素的证据[J].海洋地质与第四纪地质,2011,31(4):149-154,6.基金项目
国家自然科学基金项目(41073097,40773066) （41073097,40773066）
