Analyzing the earthquake catalogue of the Upper Egypt area since 1982 revealed some char acteristics of the seismic activity in the area. Construction of a seismicity map according to the seismicity level in the Upper Egypt showed 14 seismic zones and that the seismic activity is intense around the stra it of the Gulf of Suez, along the Red Sea axis, Abu Dabbab and Aswan area. While the detailed study of Aswan zone showed 8 distinct sub-seismic zones and that the activity is concentrated in and around Gable Marawa area. The b-value was calculated for each seismic zone; it is found that the highest value is in Abu Dabbab area followed by Aswan area. A seismic energy rele ased map of the Upper Egypt was constructed for the period from 1982 to 2006; the map reveals the main active zones with high energy values. The study gives new insight for a better understanding of the seismic activity in the Upper Egypt and helps in the seismic hazard assessment., Haggag Hamed Mohamed, Gaber Hassan Hassib, Sayed Abdalah Dahy and Ezzat Mohamed El-Amin., and Obsahuje bibliografické odkazy
Since 1982, several study programs were in itiated for monitoring seismicity, unde rground water behavior and recent crustal movements. The main characteristics of the seismic activity and the seismotectonics of the Aswan region are investigated based on the recently recorded seismic activity from 1982 to 2010 and the geodetic results. The results from these data sets are compared and combined in order to determine the main characteristics of deformation and hazard estimation in the Aswan region. GPS observations are being carried out by Aswan ge odetic network twice a year since 1997 and still until now. Analysis of the repeated 10-years GPS campaigns from the network revealed horizont al movements at the level of 7 - 10 mm/a. The estimated strain rate tensors show compression and tension components in the directions WNW-ESE and NNE- SSW which consistent with the P- and T-axes derived from ear thquake fault plane solutions, respectively. The network are a has been suffered from post-seismic deformation during the present interval; hence an increase in the general earthquake activity in the area could be expected., Mohamed S. Abdel-Monem, Haggag H. Mohamed, Mohamed Saleh and Nadia Abou-Aly., and Obsahuje bibliografické odkazy