| Abstract: | During the Proyecto de Investigacio??n Sismolo??gica de la Cordillera Occidental (PISCO ‘94) in the Atacama desert of Northern Chile, a continuously recording broadband seismic station was installed to the NW of the currently active volcano, Lascar. For the month of April, 1994, an additional network of three, short period, three-component stations was deployed around the volcano to help discriminate its seismic signals from other local seismicity. During the deployment, the volcanic activity at Lascar appeared to be limited mainly to the emission of steam and SO2. Tremor from Lascar is a random, ??rapid-fire?? series of events with a wide range of amplitudes and a quasi-fractal structure. The tremor is generated by an ensemble of independent elementary sources clustered in the volcanic edifice. In the short-term, the excitation of the sources fluctuates strongly, while the long-term power spectrum is very stationary. |
| Genre: | Article |
| ProdID: | 70018421 |
| Citation Author: | Asch, G.; Wylegalla, K.; Hellweg, M.; Seidl, D.; Rademacher, H. |
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| Citation End Page: | 282 |
| Citation Issue: | 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Annals of Geophysics |
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| Citation Number Of Pages: | 10 |
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| Citation Search Results Text: | Observations of rapid-fire event tremor at Lascar volcano, Chile; 1996; Article; Journal; Annals of Geophysics; Asch, G.; Wylegalla, K.; Hellweg, M.; Seidl, D.; Rademacher, H. |
| Citation Start Page: | 273 |
| Citation Volume: | 39 |
| Citation Year: | 1996 |
| Type: | citation/reference |
| Text: | Observations of rapid-fire event tremor at Lascar volcano, Chile; 1996; Article; Journal; Annals of Geophysics; Asch, G.; Wylegalla, K.; Hellweg, M.; Seidl, D.; Rademacher, H. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.4401/ag-3972 |
| Date Other: | Mon, 1 Jan 1996 00:00 -0600 |
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