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Volcanic activity worldwide 21 Aug 2014: Stromboli volcano, Bárdarbunga, Dukono, Kusatsu-Shirane, K...

Thursday Aug 21, 2014 16:30 PM |

Surge in lava supply at Stromboli this morning caused formation of new channels
Surge in lava supply at Stromboli this morning caused formation of new channels
Earthquakes under Bárdabunga volcano during the first 10 hours of today
Earthquakes under Bárdabunga volcano during the first 10 hours of today
Stromboli (Eolian Islands, Italy): Lava continues to flow from the fissure vent at the base of the NE crater. Compared to the first week, the effusion rate has become more unstable, causing several surges and intervals of strongly decreasing activity.
The fluctuating rate of effusion has also caused the formation of several overlapping new lava channels in the upper area of the Sciara. Two such surges occurred yesterday and today. This can be seen in the time-lapse video below:


Bárdarbunga (Iceland): The intense earthquake swarm continues with no significant changes. There are no signs of magma migrating towards or reaching the surface are present, although the risk of a subglacial eruption in the near future remains high. This could lead to significant glacial floods and ash emissions, which in turn could cause again disruptions of flight operations in the region, depending on the wind trajectories and the amount of ash released.
A slow migration of the quakes towards the NE is visible during the past days, indicating that the intruding magma at shallow depth is currently moving horizontally.

Zhupanovsky (Kamchatka, Russia): Intermittent explosive activity continues at the volcano. Volcanic ash plumes drifting SSE were reported yesterday and Tuesday rising to 10-15,000 ft (3-4.5 km) altitude (VAAC Tokyo).

Kusatsu-Shirane (Honshu): JMA reported that during 8-15 August volcanic earthquakes continued at Kusatsu-Shiranesan’s crater, although they had decreased from early August and tremor was absent. The Alert Level remains at 2 (on a scale of 1-5).
(Smithsonian / USGS Weekly Volcanic Activity Report 13 August-19 August 2014)

Kuchinoerabu-jima (Ryukyu Islands): No new eruptions seem to have occurred at the volcano since the relatively violent eruption on 4 Aug.
JMA reported continuing tremor and earthquake activity as well as a steam-/gas-plume rising 50-600 m above the crater rim.

Dukono (Halmahera): Ash emissions were observed on satellite imagery this morning. An ash plume at estimated 8,000 ft (2.4 km) altitude extended 20 nautical miles to the north of the volcano.
Previous news
Road map of the closed area near Bardarbunga volcano
Wednesday, Aug 20, 2014
Bárdarbunga (Iceland): (20 Aug) The situation remains the same as yesterday. The earthquake swarm continues at high intensity. The quakes are clustered in an area 20 km east of the Bárdarbunga volcano's caldera under the ice cap and at shallow depths of 10-1 km. ... [more]
The active lava flow on Stromboli's upper Sciara del Fuoco (INGV thermal webcam)
Tuesday, Aug 19, 2014
Stromboli (Eolian Islands, Italy): Lava flow activity continues. However, the recent surge in lava effusion seems to have considerably lost strength compared to yesterday. ... [more]
Lava flow on Stromboli this evening (INGV Sciara del Fuoco webcam)
Monday, Aug 18, 2014
Stromboli (Eolian Islands, Italy): The eruption continues with no significant change, but lava effusion seems to have increased. Several secondary active branches formed on the upper part of the new lava flow field and are visible on webcam images. ... [more]
The active lava flow on Stromboli's upper Sciara del Fuoco (INGV thermal webcam)
Sunday, Aug 17, 2014
Stromboli (Eolian Islands, Italy): No significant changes have occurred during the past days. The lava flow continues to be active from the vent at the base of the NE cone, but the effusion rate is slowly decreasing overall. ... [more]

Friday, Aug 15, 2014
Kilauea (Hawai'i): The June 27 flow remains active on Kilaueas East Rift Zone, and has advanced further into the forest over the past week. The flow front is 8.5km (5.3mi) NE of the vent on Puʻu ʻŌʻō. The flow's continued brisk advance rate is likely related, in part, to its continued confinement by local topography. In this USGS photo, the narrow flow front was within one of the many linear depressions (grabens) on the East Rift Zone. ... [more]

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