乌鲁木齐河源高山区季节积雪的分布及其密度变化  

DISTRIBUTION OF SEASONAL SNOWCOVER AND VARIATION OF SNOW DENSITY ON THE HEADWATERS OF URUMQI RIVER BASIN

作　　者：杨大庆[1] 王纯足 张寅生[1] 张志忠[1] 

机构地区：[1]中国科学院兰州冰川冻土研究所

出　　处：《地理研究》1992年第4期86-96,共11页Geographical Research

基　　金：国家自然科学基金(No:0488004)

摘　　要：本文分析了乌鲁木齐河源大西沟气象站及邻近的1号冰川及空冰斗小流域的近期观测资料,得出乌鲁木齐河源高山区三种地形下季节性积雪深度和密度变化的若干重要特征。Because of wind drift of snow and the different thermal conditions on various locations of the microtopergraph, the distribution of the shallow snow-cover is extremely uneven in the high alpine area of Urumqi river basin. Snow depth, duration of snowcover, melting date and the stratification of the snowpack and its mean density are variable in great extent from the bottom of the river valley to north and sorthfacing slopes. Therefore snow depth and density data from the meteorological station in mountain regions generally has a very small limited representative to the nearby area.And the spatial representative of meteorological data in mountain regions should be analysed first in mapping the mountain snow depth, calculating winter and spring water budget and modelling snowmelt runoff process.

关 键 词：季节性 积雪 深度 高山区 乌鲁木齐 

分 类 号：P426.635[天文地球—大气科学及气象学]