Determination of the Earthquake Source Parameters in the Aswan Area, Egypt
Salem, M., El-Amin, E., Zahra, H., Abu El Nader, I., Lofty, H. (2020). Determination of the Earthquake Source Parameters in the Aswan Area, Egypt. EKB Journal Management System, 5(Issue 7 part (1) - (2)), 269-289. doi: 10.21608/bjas.2020.323073
M. Salem; E.M El-Amin; H. Zahra; I. Abu El Nader; H. Lofty. "Determination of the Earthquake Source Parameters in the Aswan Area, Egypt". EKB Journal Management System, 5, Issue 7 part (1) - (2), 2020, 269-289. doi: 10.21608/bjas.2020.323073
Salem, M., El-Amin, E., Zahra, H., Abu El Nader, I., Lofty, H. (2020). 'Determination of the Earthquake Source Parameters in the Aswan Area, Egypt', EKB Journal Management System, 5(Issue 7 part (1) - (2)), pp. 269-289. doi: 10.21608/bjas.2020.323073
Salem, M., El-Amin, E., Zahra, H., Abu El Nader, I., Lofty, H. Determination of the Earthquake Source Parameters in the Aswan Area, Egypt. EKB Journal Management System, 2020; 5(Issue 7 part (1) - (2)): 269-289. doi: 10.21608/bjas.2020.323073

Determination of the Earthquake Source Parameters in the Aswan Area, Egypt

Benha Journal of Applied Sciences
Article 38, Volume 5, Issue 7 part (1) - (2), October 2020, Page 269-289  XML PDF (1.32 MB)
Document Type: Original Research Papers
DOI: 10.21608/bjas.2020.323073
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Authors
M. Salem1; E.M El-Amin1; H. Zahra2; I. Abu El Nader1; H. Lofty1
1National Research Institute of Astronomy and Geophysics
2Geology Department, Faculty of Science, Benha University
Abstract
The Aswan region is seismically active, according to Egypt's seismotectonic studies. This region served as the epicenter of the November 14, 1981, ML, 5.5 earthquake that seriously destroyed Aswan and the neighborhood. The source parameters of Aswan earthquakes that occurred between 2014 and 2018 and had ML magnitudes of 2.8 to 3.9 are identified in this study using spectral inversion. To construct the spectrum analysis code, the authors acquired the seismic analysis code (SAC) and MATLAB. We determined the source parameters (seismic moment, static stress drop, and source radius) and their scaling relations using the displacement source spectra from P-waves. If the activities in this area are technically created or caused by the Nasser Lake, it can be determined by a comparison with regional cases using stress reduction. The main conclusion is that the source radius ranges from (407-790) m, the corner frequencies of the examined events range from (3.6-6.9) Hz, stress decrease, and (0.04-6.7) bar, and the seismic moment ranges from (3.22E+19-2.88E+21) dyne-cm. These results are mostly in agreement with earlier studies done in the same seismic zone. Although the anticipated stress declines are not depth-dependent, they can occasionally be greater where the N-S and E-W trend fault systems converge.  However, reservoir-induced activity might have a low stress drop when compared to earthquakes with tectonic origins.
Keywords
Aswan; seismicity; source parameters; seismic moment and stress drop
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