Subsidence at Kiska volcano, Western Aleutians, detected by satellite radar interferometry
Geophysical Research Letters
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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.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Subsidence at Kiska volcano, Western Aleutians, detected by satellite radar interferometry |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2002GL014948 |
| Volume | 29 |
| Issue | 18 |
| Year Published | 2002 |
| Language | English |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 4 p. |
| First page | 2-1 |
| Last page | 2-4 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |