Alternative TitleCharacteristics of Hydrogen and Oxygen Isotopes for Precipitation in Xiling Gorge Region of Yichang,Hubei Province
武亚遵1; 万军伟1; 林云2
Source Publication地质科技情报
Contribution Rank2
Other AbstractBased on the stable isotope analysis of precipitation from May to October in 2009 in Xiling Gorge region of Yichang,characteristics of hydrogen and oxygen isotopes for precipitation were analyzed,and compared to materials of hydrogen and oxygen isotopes for precipitation in 2007.The results show that: the local meteoric water lines is fitted as deltaD=8.45delta~(18)O +11.55.Its slope and intercept are higher than those of global meteoric water line and Chinese meteoric water line,which are related to non-equilibrium evaporation and rapid enrichment of heavy isotopes of condensation objects in the unsaturated atmosphere.The average of d values for precipitation is lower than that of the globe,and it suggests that the evaporation rate is slow,and vapor source is single,and condition for precipitation is not complicated at the vapor source area.The precipitation amounts have no significant effect on the isotopic compositions of individual precipitation events,but have significant effect on long-term precipitation events.Compared to 2007,precipitation in 2009 have enrichment of delta~(18)O and deltaD,but lower average of d value,and those phenomena suggest that the vapor source path for precipitation is short and the humidity is large in vapor source areas in 2009,and the phenomena are caused by the circumstance altering in Three Gorge Reservoir after reservoir filling.
Keyword大气降雨 氢氧同位素 宜昌西陵峡地区
Indexed ByCSCD
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Cited Times:18[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author万军伟
Recommended Citation
GB/T 7714
武亚遵,万军伟,林云. 湖北宜昌西陵峡地区大气降雨氢氧同位素特征分析[J]. 地质科技情报,2011,7(3):93-97.
APA 武亚遵,万军伟,&林云.(2011).湖北宜昌西陵峡地区大气降雨氢氧同位素特征分析.地质科技情报,7(3),93-97.
MLA 武亚遵,et al."湖北宜昌西陵峡地区大气降雨氢氧同位素特征分析".地质科技情报 7.3(2011):93-97.
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