A coda-length magnitude scale for some Mexican stations

M. Macias

Abstract


An empirical coda length magnitude scale is developed for some Mexican short period stations using a least squares regression of mb versus log10T, where T is the coda-length in seconds. A total of 61 events in the magnitude range 4.0 5.8 and recorded on up to 12 stations were used, giving the following average relation

Mc= -1.59+ 2.40 log10T+ 0.00046xD

where Mc is the coda-length magnitude and D the epicentral distance in km. Furthermore, station corrections to be added to magnitudes obtained by the average relation were calculated for all 12 stations.


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DOI: http://dx.doi.org/10.22201/igeof.00167169p.1983.22.3.864

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