Local magnitude, duration magnitude and seismic moment of Dahshour 1992 earthquakes

Article Sidebar

PDF
Published: Dec 25, 2000
DOI: https://doi.org/10.4401/ag-3624
Keywords:
Dahshour 1992 earthquake, local magnitude, moment

Main Article Content

M. M. Dessokey
National Research Institute of Astronomy and Geophysics (NRIAG), Seismology Department, Helwan, Cairo, Egypt
H. M. Hussein
National Research Institute of Astronomy and Geophysics (NRIAG), Seismology Department, Helwan, Cairo, Egypt
E. M. Abdelrahman
Cairo University , Faculty of Sciences, Geophysics Department, Cairo, Egypt
M. F. Abdelwahed
National Research Institute of Astronomy and Geophysics (NRIAG), Seismology Department, Helwan, Cairo, Egypt

Abstract

Local magnitudes ML have been calculated for 56 earthquakes of the Dahshour 1992 sequence using simulated records of the KEG broadband station and the estimated calibration function of the Dahshour area. These were compared with their corresponding values of duration magnitudes obtained from the analog short period seismograms of the HLW station. The local magnitudes M L and the duration magnitudes M D for this region imply a linear relation as follows: M L = 1.2988 (± 0.04) M D 0.9032 (± 0.14). Seismic moment has also been estimated for these events using simple measurements from the time domain records. These measurements based on the simulated Wood Anderson seismograms are used for the local magnitude (ML ) estimation. The derived relationship between seismic moment (M 0 ) and magnitude (M L ) is: log (M 0 ) = 0.954 (± 0.019) M L + 17.258 (± 0.075).

Article Details

How to Cite
Dessokey, M. M., Hussein, H. M., Abdelrahman, E. M. and Abdelwahed, M. F. (2000) “Local magnitude, duration magnitude and seismic moment of Dahshour 1992 earthquakes”, Annals of Geophysics, 43(1). doi: 10.4401/ag-3624.
Issue
Vol. 43 No. 1 (2000)
Section
OLD

Open-Access License

No Permission Required

Istituto Nazionale di Geofisica e Vulcanologia applies the Creative Commons Attribution License (CCAL) to all works we publish.

Creative Commons License

Under the CCAL, authors retain ownership of the copyright for their article, but authors allow anyone to download, reuse, reprint, modify, distribute, so long as the original authors and source are cited. No permission is required from the authors or the publishers.

In most cases, appropriate attribution can be provided by simply citing the original article.
If the item you plan to reuse is not part of a published article (e.g., a featured issue image), then please indicate the originator of the work, and the volume, issue, and date of the journal in which the item appeared. For any reuse or redistribution of a work, you must also make clear the license terms under which the work was published.
This broad license was developed to facilitate open access to, and free use of, original works of all types. Applying this standard license to your own work will ensure your right to make your work freely and openly available. For queries about the license, please contact ann.geophys@ingv.it.