Título
Magnitude determination of Mexican earthquakes
Autor
Shri Krishna Singh
Nivel de Acceso
Acceso Abierto
Materias
Magnitude scále - ([http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/468]) Seismic energy - ([http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/468]) Amplitude - ([http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/468]) Escala de magnitud - ([http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/468]) Energía sísmica - ([http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/468]) Amplitud - ([http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/468]) Magnitude scále - (LCC) Seismic energy - (LCC) Amplitude - (LCC) Seismology - (LCC) concept8601 - (UNESCO) Seismology - (GEOREF) CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA - (CTI) CIENCIAS DE LA TIERRA Y DEL ESPACIO - (CTI) GEOFÍSICA - (CTI) SISMOLOGÍA Y PROSPECCIÓN SÍSMICA - (CTI)
Resumen o descripción
We explore two altemative magnitude scales, MA and ME, for quasi-real time estimate of magnitude of moderate and large Mexican earthquakes using broadband recordings at Ciudad Universitaria (CU), Mexico D.F., Mexico. MA and Me are based on amplitude of band-pass filtered (between 15 and 30 sec) velocity traces and estimate of radiated seismic energy, respectively. Both scales are tied to the moment magnitude, MW. MA is adequate for shallow, moderate, and large earthquakes, but appears to saturate for major and great earthquakes. ME, on the other hand, does not suffer from saturation and should be valid for events of all depths. In as much as MA measures long-period characteristics of an event while the contribution to ME mostly comes from frequencies near the comer frequency of the event, the magnitude on the two scales may differ for the same earthquake, even if MA has not saturated. Since a large disparity in the two magnitudes may be indicative of anomalous nature of an earthquake, we recommend the use of both scales whenever possible.
Editor
UNAM, Instituto de Geofísica
Fecha de publicación
1994 1 de abril de 1994
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
http://rigeofisica.ssn.unam.mx/jspui/handle/ssnmx/14560
Singh, S. K.,
&
Pacheco, J. F. (1994). Magnitude determination of Mexican earthquakes. Geofísica Internacional, 33(2), 189-198. http://dx.doi.org/10.22201/igeof.00167169p.1994.33.2.468
Formato
Fuente
http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/468
Idioma
Inglés
Relación
Geofísica Internacional
0016-7169
Repositorio Orígen
Repositorio de Literatura del Servicio Sismológico Nacional
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