AD in the northern part of the Western Desert, Egypt, south of the El-Alamein City. The
available waveform data observed at epicentral distances 52–391 km was collected and
carefully evaluated. Nine broad-band stations were selected to invert full waveforms for the
centroid position (horizontal and vertical) and for the focal mechanism solution. The first-
arrival travel times, polarities and low-frequency full waveforms (0.03–0.08 Hz) are …