Variation of d δ18O/dT in precipitation in the Qinghai-Xizang Plateau |
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| Authors: | Xinping Zhang |
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| Institution: | (1) Department of Geography, Hunan Normal University, 410081 Changsha, P. R. China |
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| Abstract: | The relations between δ18O and temperature on the different time scales were analysed, according to the data from Tuotuohe (34°13′N, 96°25′E; 4533
m a. s. l.), Delingha (37°22′N, 97°22′E; 2981 m a. s. l.) and Xining (36°37′N, 101°46′E; 2261 m a. s. l.) in the Qinghai-Xizang
Plateau. The results show that the significance of d δ18O/dT on different time scales are different. The d δ18O/dT on the synoptic scale reflects the interdependent relation between δ18O and temperature in the short-term synoptic scale process; the d δ18O/d T on the seasonal scale reflects the relation between them whithin a year; and the d δ18O/d T on the climatic scale reflects the relation between them in the long-term climatic change. The calculated d δ18O/dT on climatic scale is very close to the theoretical values on the condition of advection transport for Tuotuohe Station. However,
there are great differences between the calculated and the theoretical values for Delingha and Xining stations. |
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| Keywords: | Qinghai-Xizang Plateau oxygen isotope temperature time scale |
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