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Volcanic activity worldwide 14 Aug 2014: Etna, Ijen, Slamet, Sabancaya, Bagana, Shishaldin, Stromboli, Soputan

do, 14 aug 2014, 18:22
18:22 PM |
Visit to the summit crater of Etna volcano - access for guided groups now open again
Visit to the summit crater of Etna volcano - access for guided groups now open again
Shishaldin volcano's lava lake seen on 10 Aug (image: Cyrus Read / AVO)
Shishaldin volcano's lava lake seen on 10 Aug (image: Cyrus Read / AVO)
The seismic signal showing the explosion at Sabancaya on Saturday
The seismic signal showing the explosion at Sabancaya on Saturday
Stromboli (Eolian Islands, Italy): A set of videos showing the new lava flow, the sea entry and explosive interaction with the sea water is available at our Stromboli August 2014 video page.
...13 Aug:

...13 Aug:
Stromboli's lava flow in August 2014

Etna (Sicily, Italy): New access regulations for the summit region of Etna volcano have been agreed upon with the prefecture of Catania and the mountain guides.
While the summit area (above 2900 m a.s.l.) was often closed to everybody, even if accompanied by mountain guides, this limitation is now lifted: Groups accompanied by an accredited mountain guide may now access the summit area at their own judgement and risk even when the summit area is closed to the public.
This is a significant step towards a more liberal approach to make this unique, highly interesting, although potentially dangerous geologic environment available for a personal first-hand experience. It opens the way for those who would like to see the fascinating summit craters of Europe's most active volcano from close. If you are interested in a guided tour to Etna's summit area, have a look here.

Bagana (Bougainville Island, Papua New Guinea): Intense activity has been taking place at the volcano during the past days. A significant ash plume reaching approx. 25,000 ft (7-8 km) altitude has been observed on satellite imagery drifting 100-150 km southwest.
It is unknown what type of activity is producing the ash plumes. A thermal anomaly is visible on satellite imagery, suggesting that the volcano has entered a phase of significant lava dome growth that produces explosions and/or collapse events that result in ash plumes.
... [read more]

Kelud (East Java): Due to visual and instrumental monitoring results as well as level of potential hazards the Alert Level for Kelut was lowered to 1 (on a scale of 1-4) on 12 August. Residents and visitors were advised to not approach the crater rim, crater floor, or the rivers that disgorge from Kelut.

Slamet (Central Java): VSI raised the alert level back to 3 ("Siaga") on a scale of 1-4 last Monday, as activity had been increasing recently.
The observatory reported elevated tremor accompanying strong and increasingly frequent strombolian explosions, with incandescent material thrown above the crater rim and ash plumes rising up to more than 2000 m.
Deformation measurements show slight inflation of the volcanic edifice, indicating the arrival of fresh magma inside the conduit.

Dieng (Central Java): Alert level was lowered back to normal (1 out of 4). After the peak of the latest crisis in March 2013, activity (in particular gas emission levels) has calmed down to normal levels.

Soputan (North Sulawesi, Indonesia): Alert level was decreased to "Waspada" or 2 out of 4 recently as visual and seismic activity have decreased at the volcano recently.

Ijen (East Java, Indonesia): Due to decreased volcanic seismicity the Alert Level for Ijen was lowered to 1 (on a scale of 1-4) on 11 August.

Ambang (North Sulawesi & Sangihe Islands): VSI lowered the alert level back to 1 (normal) on 8 August due to decreased seismic and fumarolic activity.

Shishaldin (United States, Aleutian Islands): The Alaska Volcano Observatory (AVO) released a photo showing a small active lava lake inside the volcano's crater. Previously available satellite imagery was only able to identify a heat source, but not the type of its source, i.e. the activity at the volcano.

Sabancaya (Peru): An small explosion has probably occurred at the volcano on 9 August at 04:29, the Geophysical Institute of Peru informed. The event was not observed, but inferred from its seismic signal.
The explosion signal is the first since the beginning of the crisis, which began in February 2013.
Most likely, the explosion was a phreatic event, i.e. caused by overheated ground water without involvement of fresh magma.
Vorig nieuws
Wed, 13 Aug 2014, 21:00
Stromboli's lava flow from the effusive vent at the NE base of the partially collapsed NE crater
Stromboli (Eolian Islands, Italy): The lava flow continues to be well alimented with little variation visible. It forms an active stream on most of the Sciara, but its flow front during the past days only occasionally reached the sea, and rather accumulated to thicken the lava delta at the NE base of the Sciara. ... Lees alle
Sat, 9 Aug 2014, 21:00
Stromboli's lava flows yesterday night
Stromboli (Eolian Islands, Italy): The lava effusion continues at decreasing, but still considerable rate. When seen yesterday evening, only one channel, 5-10 m wide was still entering the sea at 10 m wide front, while there had been up to 7 branches reaching the shore in the area west of or partially covering the 2007 lava delta. Small explosions were occurring at the sea entry. ... Lees alle
Wed, 6 Aug 2014, 14:59
Thermal image of Etna's active lava flows from the effusive vent at the base of the NE crater (Monte Cagliato thermal webcam, INGV Catania)
Stromboli (Eolian Islands, Italy): According to the local mountain guides and visitors, explosive activity at Stromboli is currently at elevated levels. Several vents in the crater terrace produce strong and frequent strombolian explosions. ... Lees alle
Tue, 5 Aug 2014, 21:00
Kilauea (Hawai'i): (4 Aug) This map (USGS) shows the June 27th flow at Puʻu ʻŌʻō in Kilauea’s East Rift Zone. The area of the flow as mapped on July 18 is shown in pink, while widening of the flow as of July 29 is shown in red. ... Lees alle

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