Satellite radar interferometry measures deformation at Okmok Volcano
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
The center of the Okmok caldera in Alaska subsided 140 cm as a result of its February– April 1997 eruption, according to satellite data from ERS-1 and ERS-2 synthetic aperture radar (SAR) interferometry. The inferred deflationary source was located 2.7 km beneath the approximate center of the caldera using a point source deflation model. Researchers believe this source is a magma chamber about 5 km from the eruptive source vent. During the 3 years before the eruption, the center of the caldera uplifted by about 23 cm, which researchers believe was a pre-emptive inflation of the magma chamber. Scientists say such measurements demonstrate that radar interferometry is a promising spaceborne technique for monitoring remote volcanoes. Frequent, routine acquisition of images with SAR interferometry could make near realtime monitoring at such volcanoes the rule, aiding in eruption forecasting.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Satellite radar interferometry measures deformation at Okmok Volcano |
| Series title | Eos, Transactions, American Geophysical Union |
| DOI | 10.1029/98EO00348 |
| Volume | 79 |
| Issue | 39 |
| Year Published | 1998 |
| Language | English |
| Publisher | American Geophysical Union |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 8 p. |
| First page | 461 |
| Last page | 468 |
| Google Analytic Metrics | Metrics page |