Institution: | (1) Seismological Department, National Research Institute of Astronomy and Geophysics, Helwan, Cairo, Egypt;(2) North Africa Seismological Group (NASG), Net 40 OEA ICTP, Trieste, Italy;(3) International Center for Theoretical Physics (ICTP), Trieste, Italy;(4) Department of Earth Sciences, Trieste University, Trieste, Italy;(5) Geology Department, Faculty of Science, Mansoura University, Mansoura, Egypt; |