重复航空摄影测量方法在乌鲁木齐河流域冰川变化监测中的应用

Application of the Repeated Aerial Photogrammetry to Monitoring Glacier Variation in the Drainage Area of the Urumqi River

介绍重复航空摄影测量对比成图方法在监测乌鲁木齐河流域冰川规模和形态要素变化中的应用，以及成图过程中对控制加密和精度等问题的处理。检验表明，航空摄影测量对比成图方法能较准确地量测冰川长度、面积和储量等全形态要素的变化量，可以用于区域冰川变化的监测研究。测量资料表明，１９６４～１９９２年间，乌鲁木齐河流域１５５条冰川的规模均在缩小，冰川末端平均后退率为１２．４％，面积平均缩小率为１３．８％，冰储量减少１５．５％。

This paper stressed upon the application of comparative method with repeated aerial photogrammetric mapping to monitoring the variation of glacier size and morphologic factors in the drainage area of the Urumqi River, and the management of photographic control extension and the accuracy etc , during mapping The detection shows that the method with higher accuracy can be used to determine the variation of morphologic factors of glacier length, area and ice storage etc, and it can also be applied to monitor regional glacier variation The measurement data show that 155 glaciers in the drainage area of the Urumqi River all retreaded during the period of 1964～1992, with an average retreating rate of the glacier terminus of 12 4% and an average reducing rate of the glacier area of 13 8% as well as a loss of 15 5% of ice storage