Affiliation: | 1.Department of Geology and Geophysics, College of Science, King Saud University, Riyadh, Saudi Arabia ;2.Aswan Earthquake Research Center, NRIAG, Aswan, Egypt ;3.Prince Sultan Research Center for Environment, Water and Desert, King Saud University, Riyadh, Saudi Arabia ;4.Geology Department, Faculty of Science, Benha University, P.O. Box 13518, Benha, Egypt ; |