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利用天山乌鲁木齐河源1号冰川2001-2005年消融期的水文气象实测资料,分析了河源区径流量的昼、夜变化特征,并对径流变化过程与气温、降水等关系进行了相关分析.结果表明:从5月份消融初期开始,昼、夜平均流量都较小,随着强消融期的到来,迅速增大,到消融期后期(8月份末),又逐渐变小.就年际相同月份昼(夜)平均流量相比而言,不确定性较大;年内消融季节各月昼、夜平均径流的变化不同:5月份基本没有昼夜变化,从6月份昼夜变化增大,而且径流最大值出现在16:00-18:00,最小径流发生在9:00-10:00.消融季节各月典型晴朗天气下的径流延迟情况是:6月份最大径流比最高气温延迟1～2h,7月基本没有延迟,8月份延迟2～3h;6-8月份的昼、夜平均径流量比率都大于1(除2002年6月),从6月份开始比率逐渐增大(除2004年7月).
Based on the observed data of hydro-meteorology during the ablation period of Urumqi glacier No. 1 from 2001 to 2005 in Tianshan Mountains, the diurnal variations of runoff in the Heyuan area were analyzed, and the correlation between the variation of runoff and air temperature and precipitation was analyzed. : Starting from the beginning of ablation in May, the average daily and night flow are small, with the arrival of strong ablation rapidly increased until the ablation period (late August), and then gradually become smaller. (Night) compared to the average flow, the uncertainty is larger; during the year of ablation season, the average daily runoff and night runoff are different from each other during the year: basically no diurnal variation occurred in May, and the diurnal variation increased from June and the maximum runoff occurred From 16: 00-18: 00, the minimum runoff occurred at 9: 00-10: 00. The runoff delay under typical sunny weather during the ablation season was: the maximum runoff in June was 1 ~ 2 h later than the maximum temperature, and July basically Without delay, the delay in August was 2 ~ 3h. From June to August, the average daily and radial runoff ratios were all greater than 1 (except June, 2002), and the ratio gradually increased from June (except July 2004).