Seismic activity
Earthquake
swarm reported at another Alaskan volcano
18
August, 2013
August
17, 2013 – ALASKA –
Seismic unrest is being reported at another Alaskan volcano. Tanaga
is a 5,924-foot (1,806 m) stratovolcano located in the remote
Aleutian Range of the U.S. state of Alaska. There have been three
known eruptions since 1763. The most recent was in 1914 and produced
lava flows. According to the Earthquake
Report,
a swarm of seven earthquakes have struck near the volcano in the last
24 hours- the strongest of which was a 4.7 magnitude.
This may suggest magma intrusion under the volcano.
Number
69: Iceland - A
small phreatic eruption seems to have taken place yesterday at the
ice-covered Kverkfjoell central volcano. The steam-driven (no fresh
magma involved) explosion followed a small glacial flood on 15 August
the Kverkjökull glacier released into the Volga river and was
probably a result of the pressure release during the flood. –Volcano
Discovery
Kliuchevskoi (Kamchatka): A
new eruption began at 06:30 UTC on 15 August, KVERT reports.
Accompanied by strong tremor, strombolian activity has been taking
place in the summit crater. Incandescence at the summit of the
volcano’s summit were observed at night and a gas-steam plume
containing small amounts of ash rose up to 18,000 ft (5.5 km) a.s.l.
and drifted to the north-east of the volcano on August 16. Satellite
data showed a big and bright thermal anomaly over the volcano on
August 15-17. –Volcano
Discovery
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