1. a Porter School of Environmental Studies , Tel-Aviv University , Tel-Aviv , 60900 , Israel
2. b Soil Erosion Research Station , Ministry of Agriculture and Rural Development , Rupin , Israel
3. c Department of Electrical and Electronics Engineering , Ariel University Center of Samaria , Ariel , 40700 , Israel
4. d Remote Sensing Laboratory, Department of Geography and Human Environment , Tel-Aviv University , Tel-Aviv , Israel