【摘要】 根据老虎沟冰川流域2011年强消融期(强消融期指7-8月份)的水文气象资料,分析了老虎沟冰川流域径流及径流温度的日变化过程和径流、径流温度与气温、降水之间的关系。结果表明:老虎沟冰川流域7月气温在早晨8:00左右最低,17:00达到最高;7月冰川径流在10:00左右最小,在18:00左右达到最大值。7月流量最高值约滞后气温最高值1h左右,流量最低值约滞后气温最低值2h左右;降水对径流既有正反馈也有负反馈,降水发生时,流量有可能增加也有可能减少。冰川径流温度主要分三个阶段,第一个阶段是前一天晚上20:00左右到8:00左右,这段时间的冰川径流温度变化很小,且温度始终处于低值;从8:00到12:00径流温度持续升高,12:00左右径流温度达到日最高值;12:00到20:00左右径流温度逐渐缓慢降低。径流温度和气温之间有较一致的起伏关系,但是冰川径流某一时刻的平均温度起伏很小且温度低,最低温度为0.1℃、最高温度为0.9℃。更多还原

【Abstract】 Based on meteorological and hydrological data of the Laohugou glacier NO. 12 in the ablation season( July and August) in 2011,the characteristics of the daily runoff and runoff temperature were analyzed,and the relationship between the runoff,runoff temperature and air temperature and precipitation were discussed in this research. Results show that the lowest daily temperature of the Laohugou glacier NO. 12 appeared at 8: 00 am in the morning,the highest daily temperature appeared at 17: 00 pm. But the lowest glacial runoff happened at about10: 00 am,peak of the glacier runoff happened at about 18: 00 pm. The peak runoff of July lagged the highest temperature about 1 h,while the lowest glacier runoff lagged the lowest temperature about 2 h. The contribution of precipitation to runoff had both positive feedback and negative feedback. When precipitation occurred,runoff may increased or reduced. Glacial runoff temperature had three stages,the first stage was about 20: 00 pm to about 8: 00 am,In this time the glacial runoff temperature change was very small,and the temperature was still low; runoff temperature rose from 8: 00 am to 12: 00,around 12: 00 temperature reached the highest. From 12: 00 to 20: 00 runoff temperature gradually decreased. Runoff temperature was consistent with the ups and downs relationship between air temperature,but at a certain moment glacial runoff of average temperature fluctuation was very small and remained low,the lowest temperature of glacier runoff was 0. 1 ℃ and the highest temperature of glacier was 0. 9℃.更多还原