Earthquake families in the seismicity of Popocatépetl volcano

Analysis of the seismicity of Popocatepétl volcano (Central Mexico) over the period September 1 to December 31, 1995, shows the existence of three earthquake families, with correlation coefficients better than 0.5 in all components of three stations. For two families the events have similar magnitud...

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Bibliographic Details
Authors: Espíndola, J. M., Zamora-Camacho, A., Jiménez, Z.
Format: article
Status:Published version
Publication Date:2005
Country:México
Institution:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repository:Geofísica Internacional
Language:Spanish
OAI Identifier:oai:revistagi.geofisica.unam.mx:article/194
Online Access:http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/194
Access Level:Open access
Keyword:Volcanes mexicanos
sismicidad volcánica
familias de temblores
volcán Popocatepetl
Mexican volcanoes
volcano seismicity
Popocatépetl volcano
earthquake families
Description
Summary:Analysis of the seismicity of Popocatepétl volcano (Central Mexico) over the period September 1 to December 31, 1995, shows the existence of three earthquake families, with correlation coefficients better than 0.5 in all components of three stations. For two families the events have similar magnitudes and occur over a relatively long period of time. This suggests that they are of the asperity type. They occur up to a depth of 4 km below sea level underneath the volcano, and may be generated by the passage of magma through the upper volcanic conduits.