Mathematics – Logic
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.......17m&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #17
Mathematics
Logic
Scientific paper
DETECTION OF CRUSTAL STRAINS IN EGYPT USING GPS NETWORKS S.M. Mahmoud National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt. Fax: 202 554 80 20 Email: salahm55@yahoo.com Abstract. Studies of crustal deformation in Egypt started as early as 1983 following the occurrence of Aswan earthquake in 1981. Several publications were published and presented in local and international meetings. On November 14, 1981 an earthquake with magnitude 5.6 occurred at kalabsha fault, 70-Km southwest of Aswan City. This earthquake is considered as an important event as it is located not far from the Aswan High Dam. Therefore, the first program for monitoring crustal deformation has been started in Kalabsha area during the winter of 1983 with the cooperation between the National Research Institute of Astronomy and Geophysics (NRIAG) and the Aswan &High Dam Authority. A local network of 18 terrestrial geodetic points was established at kalabsha area in 1983 in order to monitor the horizontal and vertical crustal movements along Kalabsha fault. The initial measurements were carried out in December 1984. These measurements were repeated twice a year till December 1994.An other terrestrial network were established at seiyal fault, 15 km to the north of kalabsha fault. The initial measurements of seiyal network were carried out in March 1989 and repeated twice a year till August 1992. Analysis of the terrestrial horizontal measurements from both networks for the epoch from December 1984 till December 1994 indicated significant deformations varying from 3x10-6 to 7x10-6. Since the year of 1994 till now, the geodetic observations by means of Space Techniques which known as Global Positioning System (GPS) were applied instead of the Terrestrial ones to cover some other regions of the country. Data adjustment and analysis of the reapted GPS campaigns from the different networks prevailed significant movements which helps in more understanding the geodynamics of these regions and in creating seismic hazard assessments. In this paper, the main characteristics of the seismotectonics of Egypt, which are necessary to a reliable evaluation of the seismic risk, are discussed. The analysis is based on the previous published works on the geologic, tectonics, structural setting of the selected sites and the recently recorded seismic activity from 1900- 2000.
No associations
LandOfFree
Detection of crustal strains in Egypt using GPS networks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Detection of crustal strains in Egypt using GPS networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of crustal strains in Egypt using GPS networks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-841185