National Research Institute of Astronomy and Geophysics (NRIAG), 11722 Helwan, Cairo, Egypt

Geosystem Engineering Department, Graduate School of Engineering, The University of Tokyo, Japan

Al-Quwiy'yia Community College, King Saud University, Saudi Arabia

National Research Institute of Astronomy and Geophysics (NRIAG), 11722 Helwan, Cairo, Egypt

Geosystem Engineering Department, Graduate School of Engineering, The University of Tokyo, Japan

Geodetic and Geophysical Research Institute of the Hungarian Academy of Science, University of West Hungary, 9400 Sopron, Csatkai u. 6–8, Hungary

Geology Department, Collage of Science, King Saud University, Saudi Arabia

National Research Institute of Astronomy and Geophysics (NRIAG), 11722 Helwan, Cairo, Egypt