Mapping Desert Deposits Areas using ASTER Multi_spectral Data

Obtaining and Production of accurate and realistic information from mineral resources is one of the intellectual concerns of managers. To produce this kind of data and information, there are various methods that can be traditional methods combined with the field data and remote sensing techniques. Measurement and generation data using of satellite data and remote sensing methods especially, in desert areas because existing unfavorable conditions, opened up a new horizon to the managers to overcome the problems of traditional conventional methods.The purpose of this paper evaluate remote sensing and GIS techniques is to map evaporate minerals in the eastern part of Semnan using ASTER data.We used field data and false color, PCA and Tasseled cap transformation, ratio and data fusion techniques to estimate amount of gypsum, salt, sodium and magnesium sulfate soils. Regression and correlation relationships between satellite and field data were determined. The results showed that the thermal bands 9, 10, 12 and PCA 9, 10 and 12 can be used for separating Gypsum, Halite as well as sulfate. Finally using maximum likelihood classification map was used to map Gypsum, halite and sulfate contents with accuracy of 73.33, 66.67, 66.67% also using Kappa coefficient were prepared respectively, 0.61, 0.53 and 0.55.