A comparative study on stable isotopic composition in waters of the glacial and nonglacial rivers in Mount Gongga, China

作者：Meng Yuchuan^*; Liu Guodong; Zhang Lantian

来源：Water and Environment Journal, 2014, 28(2): 212-221.

DOI：10.1111/wej.12027

• isotope hydrology
• glacier
• ice-snow meltwater
• alpine rivers

Hailuogou (HLG) River and Huangbengliu (HBL) Gulley are typical alpine glacial and nonglacial rivers in Mount Gongga China, respectively. To differentiate distinct hydrologic regimes of the two rivers, delta O-18 and delta H-2 were measured on 196 water samples collected almost monthly from May 2008 to December 2009. The results indicate that: (i) the measured isotopic data show that stream water is overall isotopically more enriched in H-2 and O-18 than ice-snow meltwater but more depleted than precipitation and ground water; (ii) these data also suggest that stream flow is generally more dominated by ice-snow meltwater in HLG River than in HBL Gulley; (iii) delta H-2/delta O-18 relationship suggests that isotopic composition of precipitation is well preserved in stream flow, and evaporation is only minor in both HBL Gulley and HLG River; (iv) this study highlights that ice-snow meltwater is a substantially important water source in alpine regions on south-eastern edge of Tibetan Plateau.

• 出版日期2014-6
• 单位四川大学