中国北方第四系地下水同位素分层及其指示意义

陈宗宇; 张光辉; 聂振龙; 南云驹

Volume 27 Issue 1

Jan. 2002

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CHEN Zong-yu, ZHANG Guang-hui, NIE Zhen-long, NAN Yun-ju, 2002. Groundwater Isotopic Stratification and Its Implications in Northern China. Earth Science, 27(1): 97-104.

Citation:

CHEN Zong-yu, ZHANG Guang-hui, NIE Zhen-long, NAN Yun-ju, 2002. Groundwater Isotopic Stratification and Its Implications in Northern China. Earth Science, 27(1): 97-104.

CHEN Zong-yu, ZHANG Guang-hui, NIE Zhen-long, NAN Yun-ju, 2002. Groundwater Isotopic Stratification and Its Implications in Northern China. Earth Science, 27(1): 97-104.

Citation:

CHEN Zong-yu, ZHANG Guang-hui, NIE Zhen-long, NAN Yun-ju, 2002. Groundwater Isotopic Stratification and Its Implications in Northern China. Earth Science, 27(1): 97-104.

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Groundwater Isotopic Stratification and Its Implications in Northern China

1.
Collegeof Earth Sciences, Jilin University, Changchun 130026, China
2.
Instituteof Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, Hebei 050061, China

Received Date: 2001-04-13
Publish Date: 2002-01-25

Abstract

Abstract

The underground water compositions of δ(D), δ(¹⁸O), ³H and ¹⁴C are distinct in shallow and deep Quaternary aquifers in northern China and reflect differences in average paleoclimatic conditions between the Holocene and the last glacial period of Pleistocene. The recharge of the groundwater in deep confined aquifer during the last glacial period caused δ(D) and δ(¹⁸O) to deplete by 4×10^-3-16×10^-3 and 1×10^-3 -2×10^-3 when compared to shallow aquifer recharged in Holocene, which suggests that annual mean temperature was lower in the last glacial period than that in the Holocene. While the similarity of the continental gradient of δ(D) and δ(¹⁸O) found in old groundwater to that in Holocene suggests that atmospheric circulation may not have gone substantial changes over northern China for the past 30 000 years even though the temperature had changed. The fact that groundwater isotopic stratification implies three different recharge mechanisms and influence of modern hydrological circulation is very important for understanding the continental hydrological circulation and sustaining development for groundwater resources.
- isotope in groundwater,
- paleoclimate and paleohydrology,
- recharge mechanism,
- sustainable development for groundwater resources,
- northern China

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References(20)

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