Contact | RSS | EN | DE | EL | ES | FR | IT | RU

Takawangha volcano (Tanaga Island, Aleutians): earthquake swarm, alert level raised

Tue, 24 Jan 2017, 19:26
19:26 PM | BY: T
Location of the recent M4 earthquakes beneath Takawangha volcano (yellow circles)
Location of the recent M4 earthquakes beneath Takawangha volcano (yellow circles)
The alert level of the volcano was raised to yellow as the Alaska Volcano Observatory detected an energetic earthquake swarm on Tanaga Island 6-7 km ESE of the volcano.
The seismic swarm, which includes two quakes of magnitude 4.1 and 4.4 at 7 and 10 km depth, respectively, started yesterday and is continuing. It might be caused by magma movements at depth resulting in rock-fracturing as intruding magma pressurizes the host rocks to make itself space. It might be a precursor to new activity, although most volcanic earthquake swarms do not end in an eruption (magma often is stalled underground in the process).
No eruptive activity has been detected in satellite data.
There are no known historic eruptions from Takawangha volcano, although it is suspected (from geologic studies) that it's most recent activity was only about 500 years ago. Its neighbor to the west is historically active Tanaga volcano, which last erupted in 1914.

Previous news

Wed, 18 Jan 2017, 06:00

Takawangha volcano (Andreanof Islands, USA) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 January-24 January 2017 (New Activity / Unrest)

AVO reported that an energetic earthquake swarm on Tanaga Island began on 23 January, with earthquakes located 6-7 km ESE of Takawangha volcano, and was possibly due to brittle failure in the surrounding rock caused by magma movement. AVO raised the Aviation Color Code to Yellow and Alert Level to Advisory. ... Read all
Takawangha volcano
Stratovolcano 1449 m / 4,754 ft
Tanaga Island, Aleutian Islands, Alaska, 51.87°N / -178.01°W
Current status: normal or dormant (1 out of 5) Takawangha volcano eruptions:
1550 (?)
Typical eruption style
unspecified
Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version

More on VolcanoDiscovery

Support us - Help us upgrade our services!

We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Design upgrade
  • Detailed quake stats
  • Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.
Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.
Volcanoes & Earthquakes
VolcanoDiscovery Home
Volcanoes | Earthquakes | Photos | Volcano News | App
Adventure & Study Travel
Tours to Volcanoes and Volcanic Areas: walking tours, photo tours, study tours
Tours & Dates | FAQ | About us
Get our newsletter!
Company info
Contact | Legal info | Terms & conditions
Follow us
Follow us on facebook Follow us on Instagram Follow us on Twitter Visit our Youtube channel
EN | DE | EL | ES | FR | IT | RU
VolcanoDiscovery GmbH, Germany, Reg. nr.: HRB 103744, EU Tax Id: DE 310 395 322 owned and created by
Dr. Tom Pfeiffer, volcanologist, volcano photographer, tour organizer member of
IAVCEI
Volcanological Society
Ecotourism Greece
Insured by R+V
VolcanoDiscovery © 2004- All Rights Reserved | Privacy - cookie settings