Thierer, P. O. and Flueh, E. R. and Kopp, H. and Tilmann, F. J. and Comte, D. and Contreras, S. (2005) Local earthquake monitoring offshore Valparaiso, Chile. Neues Jahrbuch für Geologie und Paläontologie: Abhandlungen, 236. pp. 173-183.
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On the central Chilean continental margin off Valparaiso a temporary marine seismological network on the incoming Nazca Plate was supplemented by the Central Chilean Network and a number of temporary landstations. Simultaneous inversion of the complete marine earthquake data set yielded hypocenter distributions from minimum 1-D modeling. These show a considerable seismic activity within the 15 km – 60 km depth range with a maximum number of events between 20 km and 40 km. The distribution shows three areas of increased activity: the O’Higgins Seamount Group on the oceanic plate, the San Antonia Canyon and the northeastern portion of the Valparaiso Basin. There is a marked difference on the distance between the trench and the onset of seismic activity between the San Antonia Canyon areas and the Valparaiso Basin area.
|Uncontrolled Keywords:||2005 AREP 2005 P IA49|
|Subjects:||02 - Geodynamics, Geophysics and Tectonics|
|Divisions:||02 - Geodynamics, Geophysics and Tectonics|
|Journal or Publication Title:||Neues Jahrbuch für Geologie und Paläontologie: Abhandlungen|
|Page Range:||pp. 173-183|
|Depositing User:||Sarah Humbert|
|Date Deposited:||13 Aug 2010 11:12|
|Last Modified:||23 Jul 2013 09:59|
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