Mount Okmok
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- For criticism see Criticism of Mount_Okmok
| Mount Okmok (Okmok Caldera) | |
|---|---|
 Aerial view looking north of Okmok Caldera. | |
| Elevation | 3,519 ft (1,073 m) |
| Location | Umnak Island, Aleutian Islands, Alaska |
| Coordinates | |
| Topo map | USGS Umnak B-1 |
| Type | Shield volcano |
| Last eruption | 2008 |
Mount Okmok is the highest point on the rim of Okmok Caldera (Unmagim Anatuu[1] in Aleut) on the northeastern part of Umnak Island in the eastern Aleutian Islands of Alaska. This 5.8 miles (9.3 km) wide circular caldera truncates the top of a large shield volcano. A large crater lake once filled much of the caldera to a depth of over 500 feet (150 m), but the lake ultimately drained out through a notch eroded into the northeast rim. Only a small remnant lake about 1,000 ft (300 m) across now exists in a depression in the western part of the largely flat caldera floor.
On Saturday, July 12, 2008, Okmok Caldera exploded without warning, becoming a full-scale volcanic eruption which sent a plume of ash over 50,000 feet in the air. Mt. Okmok is roughly 60 miles from the airport at Dutch Harbor, and is to be monitored closely.
Sources
- Template:VNUM
- Volcanoes of the Alaska Peninsula and Aleutian Islands-Selected Photographs
- Alaska Volcano Observatory
- The Globe & Mail story on the July 12 eruption
References
- ^ Bergsland, K Aleut Dictionary Fairbanks: Alaska Native Language Center, 1994
- Additional work on this article is appreciated.
Adapted from the Wikipedia article, "Mount Okmok" http://en.wikipedia.org/wiki/Mount_Okmok, used under the GNU Free Documentation License.
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