Title

Magnitude and Epicenter Estimations of Mexican Earthquakes form Isoseismic Maps

Author

Shri Krishna Singh

Access level

Open Access

Summary or description

Relationships between magnitude, M, and areas, Ai, of modified intensity contours IV, V and VI of the form M = λi log Ai + µi are derived from Mexican earthquakes. Due to insufficient data, λi has been fixed to 1. Events have been grouped broadly as interplate and intraplate events. Within the range of their validity (7.0≤ M ≤8.2 for interplate; 6.4 ≤ M ≤ 7.1 for intraplate) the relations would give estimate of M to within ± 0.3 to ± 0.4 unit ( one standard deviation) of magnitude. The attenuation of intensity for interplate earthquakes is higher than that for intraplate earthquakes. The attenuation for interplate earthquakes is comparable to or greater than for Southern California earthquakes. Epicenters estimated at the center of maximum intensity contours differ from instrumental epicenter bye 48 ± 22 km.

Publisher

UNAM, Instituto de Geofísica

Publish date

1980 October 1, 1980

Publication type

Article

Publication version

Published Version

Information Resource

http://rigeofisica.ssn.unam.mx/jspui/handle/ssnmx/14568

Singh, S. K., Reichle, M.,

&

Havskov, J. (1980). Magnitude and Epicenter Estimations of Mexican Earthquakes form Isoseismic Maps. Geofísica Internacional, 19(4), 269-284. http://dx.doi.org/10.22201/igeof.00167169p.1980.19.4.914

Format

pdf

Source

http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/914

Language

English

Relation

Geofísica Internacional

0016-7169

Source repository

Repositorio de Literatura del Servicio Sismológico Nacional

Downloads

0

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