1. Laboratory for Remote Sensing and Geoinformatics, Department of Geological Sciences; University of Texas at San Antonio; TX 78249 USA
2. Civil Engineering Department; King Saud University; Riyadh 11421 Saudi Arabia
3. SGT Inc.; Cryospheric Sciences Laboratory, Code 615, Goddard Space Flight Center; Greenbelt Maryland 20771 USA
4. Cryospheric Sciences Laboratory, Code 615, Goddard Space Flight Center; Greenbelt Maryland 20771 USA