Artículo

A general overview of the catalog of recent seismicity compiled by the Mexican Seismological Survey

Zúñiga, F. Ramón; Reyes, Marco A.; Valdés, Carlos

Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Instituto de Geofísica, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Zúñiga, F. Ramón, et al. (2000). A general overview of the catalog of recent seismicity compiled by the Mexican Seismological Survey. Geofísica Internacional; Vol. 39 No. 2, 2000. Recuperado de https://repositorio.unam.mx/contenidos/42404

Descripción del recurso

Autor(es)
Zúñiga, F. Ramón; Reyes, Marco A.; Valdés, Carlos
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
A general overview of the catalog of recent seismicity compiled by the Mexican Seismological Survey
Fecha
2012-04-28
Resumen
We have analyzed the catalog of recent (1974-1998) seismicity in Mexico, based on the automatically compiled reports of the Servicio Sismológico Nacional (Mexican Seismological Survey). To this end, we employed various tools developed for the analysis of seismic catalogs as well as for detailed studies of seismicity characteristics. Such tools comprise both newly developed techniques and traditional methods which deal with the subject of artificial and natural variations of seismicity. We found that the time characteristics of reporting suffered a drastic change during 1988. Before 1988 routine procedures involved locating a large number of events and assigning magnitude only to the largest. After 1988 a decrease in the location of small events and a significant increase in the number of magnitude determinations were noted. The minimum magnitude of completeness for the period 1988- 1998 is = 4.3. A comparison of the frequency-magnitude distributions for (PDE) and (SSN) indicates that magnitudes are basically equivalent to for the range M≤5.0. These results are important in that they show that when using statistics which do not take into consideration the period of reporting, serious biases could be introduced. Conversely, our results provide means to correct for the unhomogeneity of the catalog. In terms of the most significant seismicity variations in both space and time which could be due to natural causes we found several cases that need to be studied individually.
Tema
Sismicidad; catálogo; México; variaciones naturales; variaciones artificiales.; Seismicity; catalog; Mexico; natural changes; artificial changes.
Idioma
spa
ISSN
0016-7169

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