Determination of the earthquake source parameters at Tushka area and its surroundings, Aswan, South Egypt

In the last few years, Tushka area received a special attention from the Egyptian government to construct new projects, cities and cultivation of more new areas. No historical earthquakes are known in the Tushka area. The spectral analysis was performed to obtain the source parameters of some earthquakes with magnitude MD ranging between 2.0 and 3.7 located in and around the area. The source parameters were determined using the MAG software program. The derived corner frequency ƒo for P- and S-waves show values between 3.9–10.7 and 3.7–12.5 Hz respectively, the seismic moment Mo ranged from 7.77 × 1011 to 1.77 × 1014 dyne/cm, the source radii r spanned from 49.2 to 136.5 m, the stress drop Δδ varied from 1.17 to 778.3 bar and the seismic energy E ranged from 6.42 × 105 to 1.24 × 1011 J.Some scaling relations between the different obtained source parameters were made such as: Mo–MDMo–Δδ, Mo–E, and moment magnitude Mw–MD in order to deduce the empirical relations for these parameters that can help in turn in the fast calculation of the different source parameters for the earthquakes in the area.