Characteristics of melt water discharge in the Glacier No. 1 basin, headwater of Urumqi River
Characteristics of melt water discharge in the Glacier No. 1 basin, headwater of Urumqi River
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乌鲁木齐河源头一号冰川流域融水排放特征
DOI：
10.1016/j.jhydrol.2013.03.013
复制
发表时间：
2013-05
影响因子：
6.4
通讯作者：
Jiao Keqin
中科院分区：
文献类型：
--
作者：
Gao Mingjie;Han Ti;ing;Ye Baisheng;Jiao Keqin
根据天山乌鲁木齐河源1号冰川（以下简称1号冰川）2001-2005年的观测资料，分析了1号冰川融水日流量周期特征及其与气温、降水的关系。结果表明，5月份融化初期白天和夜间放电量较少，融化期（7 - 8月）后白天和夜间放电量较强。同一月份的白天和夜间排放量逐年变化，夏季不同月份的日排放周期也不同。平均白天/夜间排放量与夜间平均气温（Tn）有一定的相关性，但与降水量无显著相关性。在2001-2005年夏季平均流量日周期中，最大流量出现在下午和晚上，最小流量出现在上午。不同年份不同月份的日流量峰值滞后于最大融冰（最高气温）的出现时间。这与冰川内部和下方的融水流动距离以及内部排水网的结构有关，也可能受到连续晴天前后天气的影响。月平均白天流量一般大于夜间流量，主要是阴雨天气和气温较低导致融水减少，降水不能弥补融水流量的损失。白天融水对夜间流量的贡献很小，这是由于融水流动距离造成的时滞很短。
Characteristics of the daily melt water discharge cycle and the relation between melt water discharge, air temperature, and precipitation are analyzed based on observation data during 2001–2005 in the Glacier No. 1 basin at the headwater of the Urumqi River, Tianshan Mountains (hereafter, Glacier No. 1). The results indicate that the daytime and nighttime discharges were less during the preliminary stage of melting in May, and became strong following the ablation period (July–August). The daytime and nighttime discharges in the same month varied year-over-year, and the daily discharge cycles in different months of the summer were dissimilar. The mean daytime/nighttime discharges were somewhat related to the mean nighttime air temperature (Tn), but were not significantly related to the amount of precipitation. In the daily cycle of average discharges in the summer months during 2001–2005, the maximum discharges occurred in the afternoons and evenings, and the minimum discharges occurred in the mornings. The daily discharge peaks lagged behind the time of maximum melting (maximum air temperature) on selected clear-weather days in different months in different years. This was related to the melt water flow distance inside and underneath the glacier and the structure of the internal drainage net, and may also have been influenced by the weather prior to and after the observed consecutive clear-weather days. The monthly mean daytime discharge was generally greater than the nighttime discharge, primarily because cloudy and rainy weather and lower air temperatures led to less melt water, and precipitation could not make up the loss of discharge from melt water. Daytime melt water contributed only slightly to nighttime discharge due to the short time lag caused by melt water flow distance.
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DOI：
10.3929/ethz-a-001891975
发表时间：
1998
期刊：
--
影响因子：
--
作者：
R. Hock
通讯作者：
R. Hock
影响因子：
5.7
作者：
Gao Xin;Ye BaiSheng;Zhang XiaoWen
通讯作者：
Zhang XiaoWen
影响因子：
3.2
作者：
P. Singh;Amit Kumar;N. Kishore
通讯作者：
P. Singh;Amit Kumar;N. Kishore
影响因子：
6.4
作者：
P. Singh;U. Haritashya;Naresh Kumar;Yatveer Singh
通讯作者：
P. Singh;U. Haritashya;Naresh Kumar;Yatveer Singh
影响因子：
3.4
作者：
Hock, R
通讯作者：
Hock, R