A strong earthquake of magnitude Mw=7.4 occurred in Central and southern Mexico on 22
January 2003 (02:06:35 UT). The focal mechanism solution showed thrust type faulting.
The rupture plane is dipping towards north. The source duration calculated close to 22 sec.
The inversion of teleseismic waves showed that the earthquake ruptured a fault with almost 60 km length
and 50 km width. Many sources are presented on the slip model.
Estimated magnitude M=7.4 based on the formula of Hara T., 2007
Slip model by Agalos A. email: aagalos@geol.uoa.gr
References
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31st General Assembly of the European Seismological Commission, held at the Creta Maris
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Bouchon Michel, (1981). A simple method to calculate Green's functions for elastic layered media. BSSA, 71, 4, 959-971.
Hara, T., Measurement of duration of high-frequency energy radiation and its application to determination of
magnitudes of large shallow earthquakes, Earth Planets Space, 59, 227-231, 2007a.
Hara, T., Magnitude determination using duration of high frequency energy radiation and displacement amplitude:
application to tsunami earthquakes, Earth Planets Space, 59, 561-565, 2007b.
Harris, R., A., and Simpson R., W., (2002). The 1999 MW 7.1 Hector Mine, California Earthquake - A test of the stress
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