| Abstract: | Sequential interferometric synthetic aperture radar images of Kiska, the westernmost historically active volcano in the Aleutian arc, show that a circular area about 3 km in diameter centered near the summit subsided by as much as 10 cm from 1995 to 2001, mostly during 1999 and 2000. An elastic Mogi-type deformation model suggests that the source is within 1 km of the surface. Based on the shallow source depth, the copious amounts of steam during recent eruptions, and recent field reports of vigorous steaming and persistent ground shaking near the summit area, we attribute the subsidence to decreased pore-fluid pressure within a shallow hydrothermal system beneath the summit area. |
| Genre: | Article |
| ProdID: | 70024289 |
| Citation Author: | Lu, Z.; Masterlark, T.; Power, J.; Dzurisin, D.; Wicks, C. |
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| Citation End Page: | 1 |
| Citation Issue: | 18 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geophysical Research Letters |
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| Citation Number Of Pages: | 0 |
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| Citation Search Results Text: | Subsidence at Kiska volcano, Western Aleutians, detected by satellite radar interferometry; 2002; Article; Journal; Geophysical Research Letters; Lu, Z.; Masterlark, T.; Power, J.; Dzurisin, D.; Wicks, C. |
| Citation Start Page: | 2 |
| Citation Volume: | 29 |
| Citation Year: | 2002 |
| Type: | citation/reference |
| Text: | Subsidence at Kiska volcano, Western Aleutians, detected by satellite radar interferometry; 2002; Article; Journal; Geophysical Research Letters; Lu, Z.; Masterlark, T.; Power, J.; Dzurisin, D.; Wicks, C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 2002 00:00 -0600 |
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