【摘要】 为研究冰川的补给及亚洲大陆腹部的水文特点,进行了在1981年7月中旬到8月中旬采集的降雨及冰川水样品的氧同位素成分测定。在考察期间,天山气象站（北纬43°06′,东经86°50′.海拔3539米）及博格达峰地区大本营（3640米）每半日降雨同位素(δ¹⁸O)的平均值为-10‰～-11‰,变化幅度-1‰到-16‰。日降雨的δ¹⁸O平均值随日平均气温的降低而减小。冰川水与雪的δ¹⁸O值低于夏季降水的δ¹⁸O值。降水与冰川水δ¹⁸O值的差异是由于氧同位素的成分与气温有关。更多还原

【Abstract】 For the study of glacier nourishment and the hydrological characteristics in inland Asia, measurements of oxygen Isotope composition were carried out on samples of precipitation and glacial water collected during the period from the middle of July to the middle of August in 1981. δ18O values of each half day precipitation at Tian Shan Meteorological Station (13°06’ N, 86°50’E; 3539m) and the base camp (3640m) in the Mt. Bogda region during the observed period had a weighted average of -10~-11% with a range between -1%, and -16%). The daily mean δ18O value of precipitation decreased with a decrease in daily mean air temperature. δ18O values of glacier ice and snow were less than those of summer precipitation. The difference of δ18O values between the precipitation and the glacial water is attributed to the dependence of the oxygen isotope composition on the air temperature.更多还原