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quote:
Earthquake swarm under Takawangha volcano
An energetic earthquake swarm was detected under Alaskan Takawangha volcano on January 23, 2017, prompting the Alaska Volcano Observatory to raise Aviation Color Code to Yellow and Alert Level to Advisory on January 24. The last known eruption of this volcano took place in 1550.

The earthquakes are located 6 to 7 km (3.7 to 4.3 miles) ESE of Takawangha Volcano. Two of them had magnitudes above 4; M4.1 and 4.4 at a depth of 7 and 10 km (4.3 and 6.2 miles), respectively

"This activity may be due to brittle failure in the surrounding rock caused by magma movement," AVO said and raised the Aviation Color Code to Yellow and Alert Level to Advisory. No eruptive activity has been detected in satellite data.

The seismicity has waxed and waned over the past 24 hours, the observatory reported late January 24.

The last known eruption of this volcano took place in 1550, Volcanic Explosivity Index is unknown.

Parts of Takawangha's edifice are hydrothermally altered and may be unstable, possibly leading to localized debris avalanches from its flanks. Takawangha lies across a saddle from historically active Tanaga volcano to the west.

Geological summary
Takawangha is a 1449-m-high, youthful volcano with an ice-filled caldera on northern Tanaga Island, near the western end of the Andreanof Islands. 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. (GVP)
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Colima blijft heel actief...


quote:
A very strong explosion occurred at Mexican Colima volcano at 13:45 UTC on January 25, 2017. This is yet another strong explosion at the volcano, currently one of the most active in the world.

The eruption was accompanied with pyroclastic flows on the NE flank.

The Washington VAAC reported volcanic ash drifted NE and reached 7 km (23 000 feet) above sea level at 14:15 UTC.
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quote:
Alaska volcano erupts again, sending up another ash cloud

A volcano in Alaska's Aleutian Islands has erupted again, sending a cloud of ash and ice particles 30,000 feet in the air.

The Alaska Volcano Observatory says the cloud was seen by satellite shortly after Bogoslof (BOH-gohs-lawf) Volcano erupted Thursday.

Volcanic ash above 20,000 feet is a threat to airliners flying between Asia and North America. The Aviation Color Code was lowered from red to orange late Thursday evening after the ash cloud dissipated.

The volcano 850 miles southwest of Anchorage has erupted more than 25 times since mid-December and could keep up its periodic eruptions for months.

The cloud Thursday drifted southeast at lower altitudes. No ash was expected to fall on nearby Unalaska Island, home to one of the nation's largest fishing ports, Dutch Harbor.
Seismic activity returned to low levels after the eruption.
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  donderdag 2 februari 2017 @ 08:04:23 #204
94257 aloa
Steeds harder, steeds sneller
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  vrijdag 3 februari 2017 @ 17:11:19 #205
94257 aloa
Steeds harder, steeds sneller
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webcamsdemexico twitterde op maandag 23-01-2017 om 04:35:24 RT @photoweather1: In West Mexico Volcan Colima was very active! An amazing photo by Sergio Tapiro @tapirofoto https://t.co/SGGvTLANex reageer retweet
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quote:
2s.gif Op vrijdag 3 februari 2017 17:11 schreef aloa het volgende:
[ afbeelding ]

webcamsdemexico twitterde op maandag 23-01-2017 om 04:35:24 RT @photoweather1: In West Mexico Volcan Colima was very active! An amazing photo by Sergio Tapiro @tapirofoto https://t.co/SGGvTLANex reageer retweet
Prachtig kiekje _O_
10.000 katjes
Maakte de 100.000e post in BIT
Er eens op uit?
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Sinabung blijft maar actief:
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quote:
0s.gif Op zondag 5 februari 2017 16:05 schreef TheRipper het volgende:
Sinabung blijft maar actief:
linkje
[ afbeelding ]
volgens mij lopen die lui allemaal veels te dichtbij :{
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Mag wel in beide hoor, kan je altijd nog doorverwijzen :)
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quote:
Powerful eruption at Bezymianny volcano
A powerful eruption took place at Bezymianny volcano, Kamchatka, Russia around 03:00 UTC on March 9, 2017. The Aviation Color Code was first raised to Orange, then to Red.

Tokyo VAAC said at 03:42 UTC, that an eruption at Bezymianny at 03:00 UTC sent ash up to 10 km (33 000 feet) extending N-NW.

According to satellite data by KVERT, ash plume at the height about 7 km (23 000 feet) a.s.l. drifts for about 112 km (70 miles) to the northwest from the volcano, KVERT said at 05:11 UTC. The width of ash plume is about 14 km (8.7 miles). Strong gas-steam activity of the volcano continues, it said.

Strong ash explosions up to 15 km (49 200 feet) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.

Based on KB GS RAS (Kamchatka Branch of Geophysical Services, Russian Academy of Sciences) data, KVERT noted that seismicity at Bezymianny began to increase on November 18, 2016. The temperature of a thermal anomaly detected in satellite images increased on December 5, and then significantly increased on December 13, which was likely caused by lava-dome extrusion. The Aviation Color Code was raised to Orange.

The Tokyo VAAC noted that ash plumes rose as high as 6.1 km (20 000 ft) a.s.l. on December 15. A gas-and-steam plume containing a small amount of ash drifted about 118 km (73 miles) W.

The last strong explosive eruption at Bezymianny occurred on September 2, 2012 when ash plumes rose to altitudes of 10 - 12 km (32 800 - 39 400 ft) a.s.l. and drifted more than 1 500 km ENE (932 miles).
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