Alpine snow cover and glaciers in relation to altitude from advanced satellite monitoring

IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217) Pub Date : 2001-07-09 DOI:10.1109/IGARSS.2001.976692

K. Seidel, J. Schaper, J. Martinec

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Abstract

Advanced methods of Landsat-TM data processing were used to map periodically the seasonal snow cover and glaciers. The test basins are located in western, eastern and southern Swiss Alps. In the basins of the rivers Rhone at Sion (3371 km/sup 2/, 488-4634 in a.s.l.), Rhine at Felsberg (3249 km/sup 2/ 562-3614 in a.s.l.) and Ticino at Bellinzona (1515 km/sup 2/, 220-3402 in a.s.l.) relations were derived between the snow coverage and altitude at different stages of the snowmelt season. From these curves, the snow coverage at a desired altitude and the elevation of the statistical snow line at different dates can be read off. The decrease of the areal extent of snow on glaciers is slower in comparison with glacier-free areas. The snow line in the basin Rhone-Sion is lower than in the other basins throughout the season. Precision snow cover mapping and an adequate evaluation of data are needed for runoff modelling and winter tourism, in particular with regard to global warming.

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高级卫星监测所得的高山积雪和冰川与海拔的关系

利用先进的Landsat-TM数据处理方法，定期绘制季节积雪和冰川图。试验盆地位于瑞士阿尔卑斯山的西部、东部和南部。在锡安罗纳河流域(3371 km/sup 2/， 488 ~ 4634)、费尔斯贝格莱茵河流域(3249 km/sup 2/ 562 ~ 3614)和贝林佐纳提契诺河流域(1515 km/sup 2/， 220 ~ 3402)，推导了融雪季节不同阶段积雪覆盖与海拔高度的关系。从这些曲线中，可以读出期望高度的积雪覆盖率和不同日期的统计雪线高程。与无冰川地区相比，冰川上积雪面积的减少速度较慢。罗纳-锡雍盆地的雪线在整个季节都比其他盆地低。径流模拟和冬季旅游，特别是关于全球变暖，需要精确的积雪测绘和充分的数据评价。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217)

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