Earthquake activity in the Aswan region, Egypt

Evaluation of the crustal deformations in the northern region of Lake Nasser (Egypt) derived from 8 years of GPS campaign observations

“…In fact, the swarm sequence of June 1987 is considered to be associated with a rapid change in the water level in Lake Nasser (Awad and Mizoue, 1995a). This can be observed in Fig.…”

“…Several studies have shown the correlation between the temporal distribution of the seismicity and water level variations in the Lake Nasser (e.g., Keabeasy et al, 1982;Awad and Mizoue, 1995a;Awad, 2002;Mekkawi et al, 2004). In fact, the swarm sequence of June 1987 is considered to be associated with a rapid change in the water level in Lake Nasser (Awad and Mizoue, 1995a).…”

“…Temporally, there were only two well-recognized peaks in activity (Awad and Mizoue, 1995a). The first burst occurred in August 1982 within the deeper seismic zone (i.e., at depths of 18-26 km).…”

“…The Kalabsha fault consists of several segments with a total length of 300 km. It is well identified by aerial photographs (Awad and Mizoue, 1995a). Together with Seiyal fault, located 12 km north, it forms a graben structure occupied by the Kalabsha embayment (Issawi, 1982).…”

“…The monitoring of this region became a major priority after the occurrence of the November 14, 1981 earthquake at the Kalabsha fault with an intensity of M L = 5.7 (Awad and Mizoue, 1995a). The epicenter was located about 60 km south of the Aswan High Dam site, and the earthquake was strongly felt in Aswan and in areas to the north up to Assiut and to the south down to Khartoum.…”