1. Seismology Department, National Seismic Network LaboratoryNational Research Institute of Astronomy and GeophysicsElmarsad Street, HelwanCairo11421Egypt
2. Electronics and Communications Engineering DepartmentNahda UniversityEgypt
3. Center for Japan-Egypt Cooperation in Science and TechnologyKyushu University744 Motooka, Nishi-kuFukuoka-shi819-0395Japan