摘要：This study was an attempt to examine the changes of the YAKHAR Glacier of Damavand Using remote sensing and GIS Technologies. The remote sensing is the best equipment that helps us to find and estimate the area of YAKHAR glacier in the impassable mountainous regions. Moreover, GIS technologies help to design and prepare a map from the region. This study amid to prove this glacier is active and has changed during the recent years. This study was a quantitative survey and the quantitative data was collected with digital topographic map at the scale 1:50000 and 1:25000, Satellite images Landsat TM&ETM+ and IRS P5 (panchromatic). In order to correct those satellite images, the researchers applied geometrical correction and radiometric correction. The quantitative data was analyzed with calculating algorithm changes and plus subtracting from corresponding bands on the satellite images in order to measure Principal Components Analysis (PCA). Moreover, the researchers used Inter band ETM, IRS, and GIS software to indicate the severe chances of glacier via fuzzy logic model. The findings of this study reveal that the area of the YAKHAR glacier is decreasing and its current size is 1/8km. The crucial reasons of the decreasing are the lack of glacier recharge and the heat of smoke emerging from Damavand volcano. Furthermore, the global warning has impact on rising temperatures and melting YAKHAR glacier in this region and also abrupt slope prevents to form the YAKHAR glaciers.
