| 鄂尔多斯地下水同位素组成与气候变化关系 |
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| 关键词:groundwater isotope paleoclimate comparison |
| 基金项目:鄂尔多斯盆地地下水资源勘查地质调查项目(编号:DKD2002006) |
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| 摘要: |
| The Relationship between Groundwater Isotopic Composition and Climate Change in Ordos |
| The study of relationship between groundwater 18O isotopic composition and paleoclimate change in the Ordos basin helps understand the regularity of regional water circulation. Based on an analysis of groundwater18O, 14C isotopic data of Ordos basin in combination with the results of paleoclimate change researches, the authors investigated the relationship between groundwater isotopic change and paleoclimatic change in this basin, and reached the following conclusions: ① the change of groundwater stable isotope (δ18O) content and that of the paleoclimate in Ordos basin show obvious corresponding relationship and, especially shortly before and after 10 kaB.P., the groundwater isotope δ18O content and the paleoclimate in the south of Ordos basin both showed remarkable changes; ② in the three time spans of 10.2～11.9 kaB.P., 13.1～14.4 kaB.P. and 16.2～18.9 kaB.P., groundwater supply in the south of Ordos basin was somewhat insufficient, which might be attributed to the relatively low paleo-temperature at that time; ③ influenced by the change of paleoclimate, the supply process of ancient groundwater was not a uniform motion. |
| HUANG Guan-xing,SUN Ji-chao,QI Ji-xiang,ZANG Yi-zhong,CHEN Jing-sheng,JING Ji-hong.2007.The Relationship between Groundwater Isotopic Composition and Climate Change in Ordos[J].Acta Geoscientica Sinica,28(6):550-554. |
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