Chagulak
Legend
✕
 | Red (Warning) |
 | Orange (Watch) |
 | Yellow (Advisory) |
 | Green (Normal) |
| Uninstrumented |
 | Community |
 | Webcam |
 | Instrument |
| Earthquake Magnitude | |
|
0
7+
| |
| Earthquake Age | |
|
Last 2 Hours |
|
Last 2 Days |
|
Last 1 Week |
Facts
- Official Name: Chagulak Island
- Seismically Monitored: No
- Color Code: UNASSIGNED
- Alert Level: UNASSIGNED
- Elevation: 1142m (3746ft)
- Latitude: 52.5714
- Longitude: -171.1395
- Smithsonian VNum: 311200
- Pronunciation:
-
Nearby Towns:
- Nikolski 98 mi (158 km) NE
- Atka 132 mi (212 km) SW
- Unalaska 211 mi (339 km) NE
- Adak 237 mi (382 km) SW
- Akutan 246 mi (396 km) NE
Distance from Anchorage: 992 mi (1597 km)
Description
From Wood and Kienle (1990) [1] : "Chagulak is a small stratovolcano separated from Amukta by ~7 km of ocean, but the two coalesce at depth. Chagulak is unstudied; the only geologic information available is a single chemical analysis. A low-potassium, high-alumina basaltic andesite (51% SiO2, 0.59% K2O) was recovered from the north-northwest shore of the island, but the sample's geologic setting is unknown."Name Origin
The U.S. Coast and Geodetic Survey gave the Unangam Tunuu name "Chagulak" to Chagulak Island in 1931, to avoid repeating the name "Chugul." This island was called "O[strov] Chugula" by Lt. Sarychev (1826) (Orth, 1971).
References Cited
[1] Volcanoes of North America: United States and Canada, 1990
Wood, C. A., and Kienle, Juergen, (eds.), 1990, Volcanoes of North America: United States and Canada: New York, Cambridge University Press, 354 p.Loading Past Activity...
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Before an eruption
Ashfall & Preparedness Information
- Ashfall impacts & preparedness (US Geological Survey)
- Volcanic health hazards & impacts (International Volcanic Health Hazards Network)
- Ash Alert! Pamphlet (AK Division of Homeland Security & Emergency Management)
- Volcanic Ashfall (AK Department of Environmental Conservation, Division of Air Quality)