【作者】 杨郧城； 侯光才； 文东光； 庞忠和； 王冬；

【Author】 YANG Yuncheng HOU Guangcai WEN Dongguang PANG Zhonghe WANG Dong Xi’an Institute of Geology and Mineral Resources, Xi’an, Shaanxi, 710054 China Geological Survey, Beijing, 100011 International Atomic Energy Agency, Vienna, Austria

【机构】 西安地质矿产研究所； 中国地质调查局； International Atomic Energy Agency Vienna,Austria；

【摘要】 通过对鄂尔多斯盆地雨水同位素的分析,建立了盆地雨水线方程,计算出雨水氢氧同位素的加权平均值,为开展鄂尔多斯盆地地下水氢氧同位素的研究提供了依据;分析了雨水δ18O与气温、降雨量和季节的变化关系,总结出鄂尔多斯盆地冬季雨水δ18O较低,春季雨水δ18O较高,夏季雨水δ18O亏损的特点,得出雨水来源和形成温度是鄂尔多斯盆地雨水同位素组成随季节变化根本原因的结论。更多还原

【Abstract】 The local meteoric water line is set up on the basis of analyzing the precipitation isotopes in Ordos basin, and the average precipitation isotope composition is figured out. The basis is provided for the research of hydrogen and oxygen isotopes in groundwater of Ordos basin. The relationships between the rainfall δ18O, the temperature and the amount of rainfall and the seasonal change are analyzed. It is concluded that the rainfall δ18O in winter is lower than that in summer, that the rainfallδ 18O in spring is the highest, and that the rainfallδ 18O in summer is depleted. The reasons for the change of rainfallδ 18O with the season in Ordos basin are put forward.更多还原