NDLI: Integration and magnitude homogenization of the Egyptian earthquake catalogue

Content Provider	Springer Nature Link
Author	Hussein, H. M. Abou Elenean, K. M. Marzouk, I. A. Peresan, A. Korrat, I. M. Abu El Nader, E. Panza, G. F. El Gabry, M. N.
Copyright Year	2008
Abstract	The aim of the present work is to compile and update a catalogue of the instrumentally recorded earthquakes in Egypt, with uniform and homogeneous source parameters as required for the analysis of seismicity and seismic hazard assessment. This in turn requires a detailed analysis and comparison of the properties of different available sources, including the distribution of events with time, the magnitude completeness, and the scaling relations between different kinds of magnitude reported by different agencies. The observational data cover the time interval 1900–2004 and an area between 22°–33.5° N and 25°–36° E. The linear regressions between various magnitude types have been evaluated for different magnitude ranges. Using the best linear relationship determined for each available pair of magnitudes, as well as those identified between the magnitudes and the seismic moment, we convert the different magnitude types into moment magnitudes M $_{W}$, through a multi-step conversion process. Analysis of the catalogue completeness, based on the M $_{W}$ thus estimated, allows us to identify two different time intervals with homogeneous properties. The first one (1900–1984) appears to be complete for M $_{W}$ ≥ 4.5, while the second one (1985–2004) can be considered complete for magnitudes M $_{W}$ ≥ 3.
Starting Page	525
Ending Page	546
Page Count	22
File Format	PDF
ISSN	0921030X
Journal	Natural Hazards
Volume Number	47
Issue Number	3
e-ISSN	15730840
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-04-30
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Earthquake catalogue Egypt Seismicity Magnitudes Completeness Environmental Management Civil Engineering Geotechnical Engineering Geophysics/Geodesy Hydrogeology
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science Water Science and Technology

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