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Abstract
Westdahl is a broad shield volcano at the western end of Unimak Island in the Aleutian chain. It has apparently been dormant since a 1991-92 eruption and seismicity levels have been low. However, satellite radar imaging shows that in the years following 1992 the upper flanks of Westdahl have risen several centimeters, probably from the influx of new magma deep below its summit. Until now, deep magma reservoirs have been difficult to detect beneath most volcanoes. But using space geodetic technologies, specifically interferometric synthetic aperture radar (InSAR), we have discovered a deep magmatic source beneath Westdahl.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Watching magma from space |
| Series title | Geotimes |
| Volume | 45 |
| Issue | 11 |
| Year Published | 2000 |
| Language | English |
| Publisher | American Geological Institute |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 2 p. |
| First page | 36 |
| Last page | 37 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |