南京信息工程大学学报Issue(6)：557-566,10.
近50年来我国不同地质载体的δ18 O变化
Variations of δ18 O from different geological isotopic carriers in the past 50 years in China
摘要
Abstract
The time series ofδ18 O variation recorded by one reef coral from the South China Sea,two ice cores from Tibetan Plateau,and three stalagmites from central and eastern China since 1950 are analyzed and compared with meteorological data measured by local meteorological stations. The results show good consistence between δ18 O re⁃cords by ice core or coral and local average temperature variation,which means the δ18 O records can indicate the temperature change in the past 50 years.The variation ofδ18O records from stalagmites is correlated with temperature and precipitation,yet with different modes in different stalagmites.In the past 50 years,summer temperature in the Tibetan Plateau decreased during 1950s—1970s then increased from 1980s,which is indicated byδ18O variation re⁃corded in ice cores.A continuous warming trend existed in annual sea temperature and sea surface temperature of the South China Sea,reflected byδ18O in reef coral.Theδ18O from three stalagmites are all increasing in the past 50 years,the same tendency showed fromδ18O in other stalagmites in Asia and theδ18O in precipitation as well.Theδ18 O variation in stalagmites is also in accordance with the change of summer monsoon index calculated by meteorologi⁃cal data,both of which indicate a weakening trend in the summer monsoon,and the trend is consistent in Asia.关键词
冰芯/石笋/珊瑚/氧同位素/温度/气候变化Key words
ice core/coral/stalagmite/δ18 O/temperature/climate change分类
天文与地球科学引用本文复制引用
王涛,郭媛,钟亦鸣,甄文芳..近50年来我国不同地质载体的δ18 O变化[J].南京信息工程大学学报,2015,(6):557-566,10.基金项目
国家自然科学基金青年基金（40701013）；公益性行业科研专项 （）
