Glacier Change Estimation Using Landsat TM Data

Glacier Change Estimation Using Landsat TM Data


Remote sensing specialist
National Remote Sensing Center,
Email: [email protected]

Khishigsuren P.
GIS specialist
Agency of Land Affairs
Geodesy and Cartography
Email: [email protected]

Otgontugs M.
GIS Specialist
National Remote Sensing Center
Email: [email protected]

The Mongolian territory includes various ecosystems as, taiga forest, high mountains, width steppe and gobi desert, through North to South. The glacier is most important land cover type to keep the freshwater resources and as indicator of the climatic temporal variability. In this paper some results research work have been included on integrating of glacier observation data and satellite imagery from the space. The remotely sensed data has an advantage of real estimation of the glacier condition spatially and temporally. The results of climatic and hydrologic scientists showed that during last several decades the glacier is melting due to global warming and we have tried to approve this result using Landsat TM data of 1990s and beginning of 2000s of some mountains of Western Mongolia. The results were obtained by utilizing the all bands of Landsat TM data and the NDSI (normalized difference snow index) images as input to a maximum likelihood classification approach. Also the SRTM/DEM data have been used for 3 dimensional processing and for calculation of the glaciers area.
Key words: ecosystems, land cover, glacier, spatially and temporally changes.