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Volcanic activity worldwide 24 Nov 2014: Kilauea volcano, Shishaldin, Fogo

lundi nov. 24, 2014 21:01 |

Lava fountains and flow from the new eruption at Fogo (Fogonews)
Lava fountains and flow from the new eruption at Fogo (Fogonews)
USGS-HVO/NASA image of active flow areas on November 22, 2014.
USGS-HVO/NASA image of active flow areas on November 22, 2014.
Current seismic signal (SSLW station, AVO)
Current seismic signal (SSLW station, AVO)
Fogo (Cape Verde): The new eruption, so far small inside the Cha caldera, continues. It is taking place from a fissure with two closely spaced vents on the southwest side of the Pico de Fogo, very near to the 1995 eruption vents.
The upper vent produces ash, the lower one feeds lava fountains (or continuous strombolian activity) and several 'a'a lava flows. One of the lava flows quickly cut the main road through the caldera, but no other major damage has been reported.
... [read more]

Kilauea (Hawai'i): To present, USGS-HVO and County of Hawai`i report that lava has reoccupied the tube system only as far as the cracks near the old geothermal well site (recognized as a clearing in the thicker forest in photographs). From there, it has spilled out and is forming a new flow lobe farther west from the previous one which stopped just short of Pahoa Village Road and that now appears to be hardening without further advance. The current front is now 5.8km/3.6mi upslope from Apa`a St measured in a straight line, which means Pahoa has escaped its most urgent threat. The county is reopening the Pahoa Village Road today, previously blocked off as the power company reenforced their poles with huge piles of rock, which they have now removed again to allow the flow of traffic. While it's possible that the new flow could turn towards the outskirts of Pahoa again, it took the previous flow 7 weeks to reach Apa`a St and it's reasonable to expect a similar timeline again, keeping in mind that another flow front may develop near the breakout site nearby Pu`u Kahauale`a and divert much of the lava that could otherwise head to Pahoa. The next several days of lava activity should give some hint of an answer to the question. Finally, it may be noteworthy that there has been increased earthquake activity south of the caldera, with a 3.6 and 3.3 felt by area residents in the past 3 days.

Shishaldin (United States, Aleutian Islands): A surge of activity was detected at the volcano. The Alaska Volcano Observatory writes:
"Seismic activity has increased over the past two hours and more sharply over the past 30 minutes, suggesting that the eruption at Shishaldin has intensified. Ash emissions beyond the immediate summit crater are more likely while seismic activity is increased. Satellite images from earlier tonight show elevated surface temperatures near the volcano's summit."

Volcano Activity Summary for 24 Nov 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 10 Nov 2014)
Bardarbunga (Iceland): Ongoing lava fountain from Baugur crater, subsidence of Bárðarbunga caldera and seismic activity (updated 18 Sep 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 4 Nov 2014)
Colima (Western Mexico): new lava flow on SW flank (updated 22 Nov 2014)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 22 Nov 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)
Fogo (Cape Verde): flank eruption inside caldera (updated 24 Nov 2014)
Fuego (Guatemala): strombolian explosions from summit crater, intermittent lava flows (updated 14 Nov 2014)
Ibu (Halmahera, Indonesia): stromolian and phreatomagmatic explosions (updated 14 Nov 2014)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 4 Oct 2014)
Kilauea (Hawai'i): new lava flow from vents on NE flank of Pu'u 'O'o (updated 13 Aug 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): growing island (updated 11 Oct 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)
Pavlof (Alaska Peninsula, USA): lava fountains, ash emission from new vent on upper north flank (updated 16 Nov 2014)
Poas (Costa Rica): phreatic explosions (updated 14 Oct 2014)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): lava fountains, ash emissions from Tavurvur cone (updated 12 Sep 2014)
Reventador (Ecuador): new lava flow on upper NW flank (updated 22 Nov 2014)
Sakurajima (Kyushu, Japan): ash venting, intermittent explosions (updated 5 Nov 2014)
Sangeang Api (Indonesia): growing lava dome & lava flow (updated 7 Jul 2014)
Santiaguito (Guatemala): generation of hot lahars (updated 14 Nov 2014)
Semeru (East Java, Indonesia): growing lava dome, lava flow, strombolian activity (updated 21 Sep 2014)
Shishaldin (United States, Aleutian Islands): mild explosive activity, intermittent more intense phases (updated 24 Nov 2014)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 19 Nov 2014)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 19 Nov 2014)
Slamet (Central Java): intense strombolian explosions (updated 13 Sep 2014)
Stromboli (Eolian Islands, Italy): weak strombolian activity at summit vents (updated 22 Nov 2014)
Suwanose-jima (Ryukyu Islands): strombolian activity in summit crater (updated 14 Nov 2014)
Tungurahua (Ecuador): moderate to strong strombolian explosions from central crater (updated 25 Sep 2014)
Turrialba (Costa Rica): occasional ash emissions (updated 17 Nov 2014)
Ubinas (Peru): degassing, sporadic small explosions and ash venting (updated 11 Sep 2014)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)
Zhupanovsky (Kamchatka, Russia): degassing, last eruption ended mid Oct 2014 (updated 10 Nov 2014)

Eruption warning / minor activity:

Aso (Kyushu): occasional weak ash emissions (updated 21 Nov 2014)
Augustine (Cook Inlet (SW Alaska))
Bezymianny (Central Kamchatka Depression): steaming, weak seismic activity (updated 3 Jul 2014)
Copahue (Chile/Argentina): degassing, crater glow, occasional ash emissions (updated 19 Nov 2014)
Etna (Sicily, Italy): sporadic weak ash emissions from New SE crater (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): incandescent lava dome (updated 24 Oct 2014)
Kavachi (Solomon Islands): no eruption since 2007 (updated 16 Jun 2014)
Kerinci (Sumatra): seismic unrest (updated 5 Jun 2013)
Kirishima (Kyushu): degassing, alert lowered (updated 25 Oct 2014)
Krakatau (Sunda Strait, Indonesia): degassing (updated 31 Mar 2014)
Kuchinoerabu-jima (Ryukyu Islands): explosion on 3 Aug 2014 (updated 21 Aug 2014)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 13 Sep 2014)
Mayon (Luzon Island): extrusion of viscous lava flow, warning of possible explosive eruption (updated 14 Nov 2014)
Medvezhia (Kurile Islands, Russia): strong steaming, thermal anomaly (updated 17 Jan 2013)
Monowai (Kermandec Islands, New Zealand): frequent submarine eruptions, last confirmed during Oct 2014 (updated 14 Nov 2014)
Nyamuragira (DRCongo): lava lake in summit crater (updated 4 Aug 2014)
Ontake-san (Honshu): strong phreatic (?) explosion on 27 Sep 2014 (updated 14 Nov 2014)
Pacaya (Guatemala): weak strombolian activity (updated 14 Nov 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 5 Nov 2014)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 6 Nov 2014)
Rasshua (Central Kuriles)
Raung (East Java): strombolian activity in summit crater (updated 5 Aug 2013)
Rincón de la Vieja (Costa Rica): phreatic explosions from crater lake (updated 21 Sep 2014)
Sabancaya (Peru): Sabancaya volcano (Peru): phreatic eruption on 25 August (updated 10 Nov 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 2 Sep 2014)
Sangay (Ecuador): degassing (updated 24 May 2013)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)

Actualités précédentes
dimanche, nov. 23, 2014
Fogo (Cape Verde): A new eruption started at the volcano this morning around 10:00 local time. The aviation alert was raised to red due to possible ash emissions that could harm aircraft in the area. ... [details]
Strombolian acttivity at the summit vents of Stromboli (INGV)
samedi, nov. 22, 2014
Stromboli (Eolian Islands, Italy): Lava effusion seems to have stopped completely since about a week ago. Small strombolian explosions continue to occur sporadically from vents in the northern and central crater terrace at the summit. ... [details]
vendredi, nov. 21, 2014
Chirpoi (Kurile Islands, Russia): (21 Nov) Satellite images showed a weak thermal anomaly over Snow volcano on 16 November. ... [details]
Smaller pyroclastic flow at Sinabung this morning
mercredi, nov. 19, 2014
Shiveluch (Kamchatka): (19 Nov) A series of eruptions occurred during the past days from the volcano's growing lava dome. Tokyo VAAC issued alerts about ash plumes rising up to 30,000 ft (9 km) altitude. ... [details]
The lava lake inside Baugur crater at Holuhraun
lundi, nov. 17, 2014
Bardarbunga (Iceland): Winter conditions continue to make it difficult to study the fissure eruption at Holuhraun. Rare opportunities for visual observation however revealed that the Baugur crater ceased to eject tall lava fountains and transformed into an elongated, boiling lava lake. Magma seems to be welling up in this lava lake at the same effusion rate as early November. The two images accompanying this update are snapshots from a stunning video recently shot by Jon Gustafson. ... [details]

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