1. Name :  Sayed Shaaban Refaie Moustafa

2. Organization: National Research Institute of Astronomy and Geophysics

3. Course: 2000-2001 (ID: J-00-00634) Choice of group :SH

4. Title:  The national Egyptian seismological network and recent earthquake activities

5. Abstract:
Five years ago, it was planned to erect a national seismological network of telemetric seismic stations covering the whole country with about 58 primary stations. Already bids have been made and equipment has been installed. The first and second phases have been completed covering the area around Greater Cairo and Sinai. All data from these stations are transmitted to a main center at Helwan equipped with computers, for immediate location of any seismic event in Egypt together with its magnitude, depth of focus and other characteristics. The regional seismological center at Aswan included in this network. Seismic data for the years 1998-2000 has been collected and analyzed. The analysis of seismicity is mostly based on local and regional seismic events suitable for this purpose. The data on earthquakes recorded by the national network seismic stations, made it possible to characterize in greater detail the seismicity of Egypt. The seismicity maps of earthquakes in Egypt show the presence of three regions, of high activity. The first region concentrated around the entrance of the Gulf of Suez, the second region is along the Gulf of Aqaba and the third one is located at the southwestern part of Cairo [Dahshour region]. The epicentral distribution of micro earthquakes shows that the activity is aligned conformable with the major tectonic trends of the Suez rift, Aqaba rift with their connection with the Red Sea rift and Gulf of Suez-Cairo-Alexandria trend.