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Volcanic activity worldwide 7 Nov 2014: Mayon volcano, Ontake-san, Zhupanovsky

vendredi nov. 07, 2014 21:00 |

Zhupanovsky (Kamchatka, Russia): KVERT reported that the eruption at Zhupanovsky had likely finished in mid-October; satellite images last detected an explosion on 11 October and a thermal anomaly on 12 October.
Volcanologists conducting an overflight on 17 October observed only gas-and-steam activity from the active crater. The Aviation Color Code was lowered to Yellow.
(Smithsonian / USGS Weekly Volcanic Activity Report 29 October-4 November 2014)

Ontake-san (Honshu): White plumes rose 100-300 m above the crater rim and drifted NE and SE during 29-30 October and 4 November. The Alert Level remained at 3 (on a scale of 1-5).
(Smithsonian / USGS Weekly Volcanic Activity Report 29 October-4 November 2014)

Mayon (Luzon Island): PHIVOLCS reported that during 28 October-4 November white plumes rose from Mayon's crater and drifted SW, WSW, WNW, and NW, sometimes down the flanks. Weak incandescence from the crater was noted at night on 28 October.
A few volcanic earthquakes and rockfall signals were recorded during 29-31 October and 4 November. A 4 November report noted that ground deformation had been detected since the beginning of 2014.
... [read more]

Volcano Activity Summary for 7 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 24 Sep 2014)
Bardarbunga (Iceland): Ongoing northward migration of 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 21 Sep 2014)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 28 Oct 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 6 Nov 2014)
Ibu (Halmahera, Indonesia): growing lava dome, occasional ash emissions (updated 16 Oct 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)
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): ash emissions, explosions (updated 19 Aug 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 6 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 31 Oct 2014)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 30 Oct 2014)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 6 Nov 2014)
Slamet (Central Java): intense strombolian explosions (updated 13 Sep 2014)
Stromboli (Eolian Islands, Italy): degassing from summit craters, ending lava effusion from 650 m vent (updated 30 Oct 2014)
Suwanose-jima (Ryukyu Islands): strombolian activity in summit crater (updated 10 Sep 2014)
Tungurahua (Ecuador): moderate to strong strombolian explosions from central crater (updated 25 Sep 2014)
Turrialba (Costa Rica): Ongoing ash emission and explosions (updated 30 Oct 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)

Eruption warning / minor activity:

Aso (Kyushu): occasional weak ash emissions (updated 31 Aug 2014)
Augustine (Cook Inlet (SW Alaska))
Bezymianny (Central Kamchatka Depression): steaming, weak seismic activity (updated 3 Jul 2014)
Cerro Negro de Mayasquer (Colombia): seismic unrest, inflation (updated 22 Oct 2014)
Chirpoi (Kurile Islands, Russia): hot spot visible on satellite imagery (updated 24 Oct 2014)
Copahue (Chile/Argentina): degassing, crater glow, occasional ash emissions (updated 5 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 7 Nov 2014)
Medvezhia (Kurile Islands, Russia): strong steaming, thermal anomaly (updated 17 Jan 2013)
Nyamuragira (DRCongo): lava lake in summit crater (updated 4 Aug 2014)
Ontake-san (Honshu): strong phreatic (?) explosion on 27 Sep 2014 (updated 7 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 4 Oct 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
Webcam view of the eruption this afternoon (Mila webcam)
jeudi, nov. 06, 2014
Bardarbunga (Iceland): The Holuhraun fissure eruption continues with amazing stability. By now, more than 1 cubic kilometers of magma has been erupted and covers almost 70 square km (which implies an average thickness of 15 meters). ... [details]
Pyroclastic flow on Sinabung's western flank on 3 Nov
mercredi, nov. 05, 2014
Sakurajima (Kyushu, Japan): The volcano's activity is currently elevated. At least 3 explosions yesterday produced ash plumes that rose to more than 10,000 ft (3 km) altitude. ... [details]
Incandescent rockfalls from the lava dome of Batu Tara this morning (photo: Galih / VolcanoDiscovery Indonesia)
mardi, nov. 04, 2014
Batu Tara (Sunda Islands, Indonesia): The volcano continues to have frequent mild to very strong strombolian, sometimes small vulcanian-type explosions, but also intermittent, short-lived effusive phases. ... [details]
Latest update map from USGS-HVO showing widening of the flow field, with no advance of its closest point to Pahoa village.
lundi, nov. 03, 2014
Kilauea (Hawai'i): Over the past few days, there has been no advance of the lava flow front towards residences in Pahoa, though active lava continues to break out from the margins of the flow behind its farthest reach. Luckily no residences have burned so far because of this slow-down, but locals await the seemingly inevitable pressure surge which will come from somewhere on the flow in the near future. ... [details]
Costa Rica’s Turrialba Volcano erupts, as seen from 14,000 feet at 8:29 a.m. on Oct. 30, 2014. (OVSICORI-UNA, via The Tico Times)
samedi, nov. 01, 2014
Turrialba (Costa Rica): According to the National Seismological Network (RSN), the sudden eruption of Turrialba last Wednesday night was the volcano’s largest in 150 years. Costa Rica-based online-newspaper ‘The Tico Times’ reports that it was a massive phreatic explosion that spewed out ash, rocks and possibly magma. Experts from the University of Costa Rica (UCR) and National University (UNA) reported increased seismic activity on Wednesday afternoon, culminating in explosive activity at 11:10 p.m. with the ash cloud from the explosion reaching several hundred meters. ... [details]

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