| Autor: |
SHI Yudong, WANG Shengjie, ZHANG Mingjun, ZHU Chenggang, CHE Yanjun |
| Předmět: |
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| Zdroj: |
Arid Land Geography; Jul2024, Vol. 47 Issue 7, p1127-1135, 9p |
| Abstrakt: |
Stable hydrogen and oxygen isotopes are widely used as tracers in studying hydrologic processes. Surface water is an important component of the water cycle, and it is an effective vehicle for analyzing regional moisture sources and modern hydrologic processes. We collected surface water samples from August 2018 to August 2023 on the northern slope of the Kunlun Mountains during the Third Xinjiang Scientific Expedition and measured the stable hydrogen and oxygen isotope values. Additionally, we compiled the previous surface water isotope data in the region. We analyzed the spatial distribution characteristics of the stable hydrogen and oxygen isotopes of surface water on the northern slope of the Kunlun Mountains. The results showed that: (1) The surface water isotope values on the northern slope of the Kunlun Mountains showed spatial variations characterized by low values in the west and high values in the east. The local surface water line is δ² H=5.98xδ18 O-6.86 (R²=0.65, n=141). (2) A comparison of the stable isotope values of surface water and precipitation on the northern slope of the Kunlun Mountains reveals that the regional surface water isotope value averages are generally lower than the weighted precipitation isotope values. (3) The spatial distribution of surface water isotopes on the northern slope of the Kunlun Mountains is influenced by the interplay of two key factors: the water vapor advection by westerly winds and the local recycled moisture; additionally, evaporation also changed the regional surface water isotope values. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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