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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Abstract
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.
| Item Type: | Article |
|---|---|
| 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 |
| Volume: | 236 |
| Page Range: | pp. 173-183 |
| Depositing User: | Sarah Humbert |
| Date Deposited: | 13 Aug 2010 11:12 |
| Last Modified: | 23 Jul 2013 09:59 |
| URI: | http://eprints.esc.cam.ac.uk/id/eprint/1843 |
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