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Volcanic activity worldwide 31 Aug 2014: Bardarbunga volcano, Tungurahua, Sakurajima, Nishino-shima,...

Sunday Aug 31, 2014 17:03 PM |

View of the eruptive fissure this morning (Mila webcam 2)
View of the eruptive fissure this morning (Mila webcam 2)
The image shows earthquakes and GPS-displacements together in one picture. The earthquakes have different colours representing how long it's been since they were measured. GPS displacements are shown with black arrows. The circles around the arrows represent uncertainty in the measurements.
The image shows earthquakes and GPS-displacements together in one picture. The earthquakes have different colours representing how long it's been since they were measured. GPS displacements are shown with black arrows. The circles around the arrows represent uncertainty in the measurements.
Steam plume with possibly some ash from Aso-san volcano (Jpaan) this morning
Steam plume with possibly some ash from Aso-san volcano (Jpaan) this morning
View of the Nishino-Shima island from the west on 26 Aug (Japanese Coast Guard)
View of the Nishino-Shima island from the west on 26 Aug (Japanese Coast Guard)
Ash plume from an explosion at Suwanose-jima volcano (Tokara Islands, Japan)
Sequence of eruptions with pyroclastic flows at Tungurahua (photos G. Viracucha OVT/IG)
Sequence of eruptions with pyroclastic flows at Tungurahua (photos G. Viracucha OVT/IG)
Bardarbunga (Iceland): According to local news, the lava flows have already reached more than 3 km distance from the fissure vent. The eruption is much stronger than the previous one on Friday, with up to 10 times lava output.
Since the start of the eruption this morning, earthquake activity has been lower (which is normal as pressure is lowered).
... [read more]
...31 Aug:
According to IMO, "the new eruption started in Holuhraun shortly after 04 AM, on the same volcanic fissure, which erupted earlier this week. The fissure is estimated to be 1,5 km long.
"...Fewer earthquakes seem to follow the event than in the previous eruption, but more lava is being extruded.
... [read more]
...31 Aug:
A new eruptive phase has started at the same fissure that had been briefly active Friday morning.
The new eruption seems to be bigger than the previous one and located slightly north of the Friday fissure vent. The active fissure was estimated to be 1.5 km long and is located approx. 9 km north of the Dyngjujökull glacier in the Holuhraun lava plain.
At the same time, intense seismic activity continues. More than 200 earthquakes have been detected since midnight, both under the active intrusion under and north of the rim of the glacier NE of the volcano as well as under the caldera of Bárdarbunga itself. The stringest were 7 quakes with magnitudes between 3.0 and 3.8.
...30 Aug:
The Icelandic Met Office has published two maps showing the (ongoing) mostly horizontal deformation, as evidenced by GPS measurements, in the Bardarbunga area during the past 3 days as well as since the beginning of the crisis. In just 2 weeks, the distance between the DYNC station (western side of the rift) and GSIG (eastern side) has increased by almost 50 cm!

Zhupanovsky (Kamchatka, Russia): New eruptions and ash emissions occurred yesterday. An ash plume rising to 17,000 ft (6 km) altitude and drifting SE was observed on satellite imagery.

Aso (Kyushu): A small eruption at the volcano was reported from Tokyo VAAC this morning. An ash plume rose to approx. 6,000 ft (1.8 km) altitude.

Nishino-shima (Volcano Islands, Japan): The island remains active and continues to grow as lava flows add new land to it. The Japanese Coast Guard made another survey flight on 26 August and observed ongoing effusive and explosive activity in the main crater.
A comparison with pictures from July shows that a new 3-400 m wide platform to the northeast of the island has been added as new land during the past weeks.
... [read more]

Sakurajima (Kyushu, Japan): The activity has picked up significantly at the volcano. During the past 30 hours, at least 10 vulcanian-type explosions were recorded. Some of them produced ash plumes rising to 13,000 ft (4 km) altitude, i.e. approx. 3 km above the volcano's Showa crater.

Suwanose-jima (Ryukyu Islands): The volcano has entered a more active phase again. Several (strombolian-type) explosions and phases of constant ash venting have occurred since yesterday, producing ash plumes of 1-2 km height.

Tungurahua (Ecuador): A series of small pyroclastic flows occurred yesterday evening, IGEPN reported in its latest special bulletin.
The eruptions took place between 18:23 and 19:00 local time, and are the first occurrences of pyroclastic flows since the start of the new eruptive phase that started on 27 July.
... [read more]

Volcano Activity Summary for 31 Aug 2014:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 14 Aug 2013)
Bagana (Bougainville Island, Papua New Guinea): ash emissions, lava dome growth (updated 27 Aug 2014)
Bardarbunga (Iceland): Ongoing northward migration of seismic activity (updated 21 Aug 2014)
Barren Island (Indian Ocean): intermittent activity, likely strombolian-type and/or lava flows (updated 4 Feb 2014)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 27 Aug 2014)
Colima (Western Mexico): extrusion of lava flow from summit, intermittent explosions (updated 10 Apr 2014)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 21 Aug 2014)
Erebus (Antarctica): active lava lake in summit crater (updated 21 Jan 2012)
Erta Ale (Ethiopia): active lava lake in northern pit crater, active hornito with intermittend flow in southern crater (updated 11 Jan 2013)
Fuego (Guatemala): strombolian explosions from summit crater, intermittent lava flows (updated 27 Aug 2014)
Ibu (Halmahera, Indonesia): growing lava dome, occasional ash emissions (updated 28 Jul 2014)
Kilauea (Hawai'i): new lava flow from vents on NE flank of Pu'u 'O'o (updated 13 Aug 2013)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 25 Jul 2013)
Manam (Papua New Guinea): degassing, occasional ash venting (updated 28 Aug 2013)
Marapi (Western Sumatra, Indonesia): sporadic explosions (updated 27 Mar 2014)
Nasu (Honshu)
Nishino-shima (Volcano Islands, Japan): lava effusion enlarging the new island (updated 31 Aug 2014)
Nyiragongo (DRCongo): active lava lake in summit crater (updated 26 Feb 2014)
Ol Doinyo Lengai (Tanzania): effusion of natrocarbonatite lava inside the crater (updated 8 Jul 2013)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): lava fountains, ash emissions from Tavurvur cone (updated 29 Aug 2014)
Reventador (Ecuador): ash emissions, explosions (updated 19 Aug 2014)
Sakurajima (Kyushu, Japan): ash venting, intermittent explosions (updated 31 Aug 2014)
Sangeang Api (Indonesia): growing lava dome & lava flow (updated 7 Jul 2014)
Santiaguito (Guatemala): generation of hot lahars (updated 4 Aug 2014)
Semeru (East Java, Indonesia): growing lava dome & lava flow, sporadic explosions (updated 23 Jul 2014)
Shishaldin (United States, Aleutian Islands): small lava lake in summit crater (updated 14 Aug 2014)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 7 Jul 2014)
Sinabung (Sumatra, Indonesia): effusion of viscous lava, steaming, ash emissions (updated 15 Jul 2014)
Slamet (Central Java): mild strombolian activity in summit crater (updated 28 Aug 2014)
Stromboli (Eolian Islands, Italy): continuous effusion of lava finds new pathway (updated 30 Aug 2014)
Suwanose-jima (Ryukyu Islands): strombolian activity in summit crater (updated 31 Aug 2014)
Tungurahua (Ecuador): moderate to strong strombolian explosions from central crater (updated 31 Aug 2014)
Ubinas (Peru): degassing, sporadic small explosions and ash venting (updated 22 Aug 2014)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)
Zhupanovsky (Kamchatka, Russia): intermittent ash emissions (updated 31 Aug 2014)

Eruption warning / minor activity:

Aso (Kyushu): occasional weak ash emissions (updated 31 Aug 2014)
Bezymianny (Central Kamchatka Depression): steaming, weak seismic activity (updated 3 Jul 2014)
Chirpoi (Kurile Islands, Russia): hot spot visible on satellite imagery (updated 1 May 2014)
Etna (Sicily, Italy): strombolian explosions and lava flow effusion from NSEC (updated 19 Apr 2014)
Heard (Australia, Southern Indian Ocean): possibly lava lake in summit crater (updated 27 May 2014)
Karangetang (Siau Island, Sangihe Islands, Indonesia): lava extrusion at summit crater, strombolian activity, glowing avalanches (updated 28 Jul 2014)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 3 Jul 2014)
Kavachi (Solomon Islands): no eruption since 2007 (updated 16 Jun 2014)
Kerinci (Sumatra): seismic unrest (updated 5 Jun 2013)
Krakatau (Sunda Strait, Indonesia): degassing (updated 31 Mar 2014)
Kuchinoerabu-jima (Ryukyu Islands): explosion on 3 Aug 2014 (updated 21 Aug 2014)
Mayon (Luzon Island): slowly growing lava dome (updated 17 Aug 2014)
Medvezhia (Kurile Islands, Russia): strong steaming, thermal anomaly (updated 17 Jan 2013)
Nyamuragira (DRCongo): lava lake in summit crater (updated 4 Aug 2014)
Papandayan (West Java): strong hydrothermal activity, increased seismicity (updated 6 May 2013)
Piton de la Fournaise (La Réunion): short-lived eruption during 21-22 June (updated 23 Jun 2014)
Poas (Costa Rica): occasional phreatic explosions from crater lake (updated 29 Aug 2014)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 27 Aug 2014)
Rasshua (Central Kuriles)
Raung (East Java): strombolian activity in summit crater (updated 5 Aug 2013)
Rincón de la Vieja (Costa Rica): small phreatic eruption on 11 April (updated 6 Oct 2012)
Sabancaya (Peru): Sabancaya volcano (Peru): phreatic eruption on 25 August (updated 27 Aug 2014)
Sacabaya (Northern Chile, Bolivia and Argentina)
San Cristobal (Nicaragua): possible ash emission on 11 April (updated 12 Apr 2014)
San Miguel (El Salvador): ash emissions, small explosions, increasing tremor (updated 23 Jul 2014)
Sangay (Ecuador): degassing (updated 24 May 2013)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)

Previous news
Lava flows on the Sciara del Fuoco last evening
Saturday, Aug 30, 2014
Stromboli (Eolian Islands, Italy): (30 Aug) The effusive eruption continues with little changes and no signs of ending soon. The effusion rate is fluctuating, but elevated and the vent feeds two flows that travel down the Sciara in two channels. ... [more]
Oblique aerial view of the eruptive fissure
Friday, Aug 29, 2014
Bardarbunga (Iceland): Two aerial pictures released by the Icelandic Civil Protection showing the eruptive fissure, the spatter ramparts that formed there as well as the new lava flows. ... [more]
Image of one of the ice cauldrons (image: Civil Protection)
Thursday, Aug 28, 2014
Bardarbunga (Iceland): No significant changes have occurred today. ... [more]
Thermal image of the upper Sciara del Fuoco of Stromboli
Wednesday, Aug 27, 2014
Stromboli (Eolian Islands, Italy): The lava flow in the new channel at the eastern side of the Sciara del Fuoco remains well alimented. After a calmer weak, it is now again reaching the sea, at least intermittently. ... [more]
View onto the upper part of the lava flow early on the 10th of August, showing the trajectory of the lava from the vent down onto and across the plateau before it flows down the Sciara del Fuoco. Only the vent at the origin and the overflow from the plateau are visible from the 400 m webcams.
Tuesday, Aug 26, 2014
Stromboli (Eolian Islands, Italy): (25 Aug) After fluctuating and unstable effusive activity during the last few days, the vent seems to have once again increased its magma effusion rate and triggered a new pathway for the lava to flow down the upper part of the Sciara del Fuoco. ... [more]

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