Takawangha volcano
Updated: Jun 5, 2023 22:48 GMT -
Stratovolcano 1449 m / 4,754 ft
Tanaga Island, Aleutian Islands, Alaska, 51.87°N / -178.01°W
Current status: restless (2 out of 5)
Tanaga Island, Aleutian Islands, Alaska, 51.87°N / -178.01°W
Current status: restless (2 out of 5)
Last update: 22 Mar 2023 (Smithsonian / USGS Weekly Volcanic Activity Report)
Snow-clad Takanangha volcano on Tanaga Island (image: Loewen, M. W. via AVO / USGS)
Takawangha is a 1449-m-high, young stratovolcano on northern Tanaga Island near the western end of the Andreanof Islands in the Aleutian arc. It is capped by an ice-filled summit caldera.
Due to its remoteness, there are no historical observations of activity, but radiocarbon dates indicate it has probably been active about 500 years ago. In November 2022, seismic unrest was detected under the volcano, suggesting internal magma movements that could be precursor to new activity in the future.
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Takawangha volcano eruptions: 1550 (?)
Latest nearby earthquakes
| Time | Mag. / Depth | Distance/Location | ||
| Friday, May 26, 2023 GMT (1 quake) | ||||
| May 26, 2023 12:01 am (GMT -9) (May 26, 2023 09:01 GMT) | 0.9 7.8 km | 13 km (8.1 mi) 81 Km W of Adak, Alaska | ||
| Thursday, May 25, 2023 GMT (1 quake) | ||||
| May 25, 2023 7:57 am (GMT -9) (May 25, 2023 16:57 GMT) | 0.9 5.5 km | 13 km (8.1 mi) Andreanof Islands, Aleutian Islands | ||
| Wednesday, May 24, 2023 GMT (1 quake) | ||||
| May 23, 2023 8:38 pm (GMT -9) (May 24, 2023 05:38 GMT) | 1.0 7.8 km | 15 km (9.3 mi) 81 Km W of Adak, Alaska | ||
| Tuesday, May 23, 2023 GMT (2 quakes) | ||||
| May 22, 2023 9:28 pm (GMT -9) (May 23, 2023 06:28 GMT) | 1.1 10.4 km | 13 km (8.1 mi) 107 Km W of Adak, Alaska | ||
| May 22, 2023 8:44 pm (GMT -9) (May 23, 2023 05:44 GMT) | 0.8 1.5 km | 4.9 km (3 mi) 99 Km W of Adak, Alaska | ||
Background
Takawangha lies across a saddle from historically active Tanaga volcano to the west; older, deeply eroded volcanoes lie adjacent to Takawangha on the east. The summit of the dominantly basaltic to basaltic-andesite volcano is largely ice covered, with the exception of five Holocene craters that during the last few thousand years produced explosive eruptions and lava flows that reached the lower flanks of the volcano. No historical eruptions are known from Takawangha, although radiocarbon dating indicates explosive eruptions have occurred within the past several hundred years.---
Smithsonian / GVP volcano information
See also: Sentinel hub | Landsat 8 | NASA FIRMS
