Sistemas de fractura en Isla Decepción (Antártida) utilizando localizaciones precisas de multipletes registrados con antenas sísmicas
Identificadores
URI: http://hdl.handle.net/10481/23461Metadatos
Afficher la notice complèteEditorial
Instituto Politécnico de Tomar (Portugal)
Materia
Localizaciones precisas Multipletes Antenas sísmicas Isla Decepción (Antártida) Precise locations Island Deception (Antarctica) Seismic antennas
Date
2008Referencia bibliográfica
Carmona, E.; Almendros, J.; Ibáñez, J.M.; Peña, J.A. Sistemas de fractura en Isla Decepción (Antártida) utilizando localizaciones precisas de multipletes registrados con antenas sísmicas. En: 6ª Asemblea Hispano Portuguesa de Geodesia y Geofisica: libro de resúmenes, Tomar (Portugal) 11-14 febrero 2008. [Tomar]: Instituto Politécnico de Tomar (IPT), 2008. pp. 531-532. [http://hdl.handle.net/10481/23461]
Résumé
During the 1998-1999 Antarctic survey, a considerable increase of the seismo-volcanic activity took place in Deception Island. About 2000 volcano-tectonic (VT) local earthquakes were recorded by a 16-channel, small-aperture (300 m)seismic antenna deployed in Fumarole Bay between January and February of 1999. The analysis of these data allowed to determine the hypocentral positions of a subgroup of 836 VT earthquakes, using classical array techniques and ray tracing for source location. The detailed study of the waveforms evidences the presence of multiplets. A precise relative
location using the relative slowness estimate (RelSE) method allows to define planes of fracture for the multiplets of the
series.