Sistemas de fractura en Isla Decepción (Antártida) utilizando localizaciones precisas de multipletes registrados con antenas sísmicas

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URI: http://hdl.handle.net/10481/23461
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Author
Carmona, Enrique; Almendros González, Francisco Javier; Ibáñez, Jesús M.; Peña, José Antonio
Editorial
Instituto Politécnico de Tomar (Portugal)
Materia
Localizaciones precisas
 
Multipletes
 
Antenas sísmicas
 
Isla Decepción (Antártida)
 
Precise locations
 
Island Deception (Antarctica)
 
Seismic antennas
 
Date
2008
Referencia 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]
Abstract
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.
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