| Abstract: | Summary of Volcano Hazards at Tanaga Volcanic Cluster
The Tanaga volcanic cluster lies on the northwest part of Tanaga Island, about 100 kilometers west of Adak, Alaska, and 2,025 kilometers southwest of Anchorage, Alaska. The cluster consists of three volcanoes-from west to east, they are Sajaka, Tanaga, and Takawangha. All three volcanoes have erupted in the last 1,000 years, producing lava flows and tephra (ash) deposits. A much less frequent, but potentially more hazardous phenomenon, is volcanic edifice collapse into the sea, which likely happens only on a timescale of every few thousands of years, at most. Parts of the volcanic bedrock near Takawangha have been altered by hydrothermal activity and are prone to slope failure, but such events only present a local hazard. Given the volcanic cluster‘s remote location, the primary hazard from the Tanaga volcanoes is airborne ash that could affect aircraft. In this report, we summarize the major volcanic hazards associated with the Tanaga volcanic cluster. |
| Genre: | USGS Numbered Series |
| ProdID: | 80077 |
| Citation Author: | Coombs, Michelle L.; McGimsey, Robert G.; Browne, Brandon L. |
| Citation Contributing Office: | USGS Alaska Science Center (Alaska Volcano Observatory) |
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| Citation Edition: | - |
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| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | 0640000 |
| Citation LatS: | 0480000 |
| Citation LonE: | -1420000 |
| Citation LonW: | 1760000 |
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| Citation Phsyical Description: | Report: vi, 37 p.; Plate: 30 x 20 inches |
| Citation Projection: | Albers Equal Area Conic |
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| Citation Publisher: | Geological Survey (U.S.) |
| Citation Series: | Scientific Investigations Report |
| Citation Series Code: | SIR |
| Citation Series Number: | 2007-5094 |
| Citation Search Results Text: | Preliminary Volcano-Hazard Assessment for the Tanaga Volcanic Cluster, Tanaga Island, Alaska; 2007; SIR; 2007-5094; Coombs, Michelle L.; McGimsey, Robert G.; Browne, Brandon L. |
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| Citation Year: | 2007 |
| Type: | citation/reference |
| Text: | Preliminary Volcano-Hazard Assessment for the Tanaga Volcanic Cluster, Tanaga Island, Alaska; 2007; SIR; 2007-5094; Coombs, Michelle L.; McGimsey, Robert G.; Browne, Brandon L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/sir/2007/5094/ |
| Date Other: | Tue, 3 Jul 2007 00:00 -0500 |
| Publisher: | Geological Survey (U.S.) |
