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Volcanic activity worldwide 9 May 2014: Ubinas, Zavodovski, Reventador

Fri, 9 May 2014, 21:00
21:00 PM |
Current infrared image of Reventador volcano showing the still active (white) / cooling (yellow) lava flows (IGPEN)
Current infrared image of Reventador volcano showing the still active (white) / cooling (yellow) lava flows (IGPEN)
Current seismic activity at Ubinas (UB1 station, IGP)
Current seismic activity at Ubinas (UB1 station, IGP)
Steam / ash plume from Zavodovski island on 19 April 2014 (NASA)
Steam / ash plume from Zavodovski island on 19 April 2014 (NASA)
Reventador (Ecuador): (9 May) The activity of the volcano had increased during the past two weeks, producing several lava flows and some relatively strong explosions. At the moment, it has decreased again, but remains moderately high. Explosions have become less frequent and the lava flows are only weakly alimented.

Ubinas (Peru): (9 May) The current eruptive phase might be approaching an end. Since the second half of April, visual and seismic activity at the volcano have been decreasing. Explosions and ash emissions have almost ceased, although there are still some occasional bursts.
IGP released a report showing the evolution of seismic activity over the past weeks. It shows that hybrid earthquakes (indicators of rising magma) increased until 5 April and then started to drop. Surface activity in turn increased until 13 April and remained elevated until 19 April. This suggests that the magma took approx 8 days to reach the surface from its deeper source.
One of the strongest explosions occurred on 19 April, when large bombs were ejected to up to 2.7 km distance. After this explosion, which might have destroyed the lava dome in the crater, the volcano showed abundant degassing and ash venting, probably a result of the cleared conduit.

Zavodovski (South Sandwich Islands (UK)): (9 May) A NASA satellite image from 19 April shows that some activity (strombolian explosions, small lava lake?) was present on the remote volcano in the South Sandwich islands.
On the picture, a thin plume of white rises from the volcano on Zavodovski island, the northernmost of the South Sandwich Islands and streams to the northeast.
Further south, a wider white plume can be seen blowing across the Atlantic Ocean. This plume rises from the Mount Michael volcano, which is a young and frequently active strato-volcano located on Saunders Island, near the center of the South Sandwich Island chain.

Volcano Activity Summary for 9 May 2014:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 14 Aug 2013)
Bagana (Bougainville Island, Papua New Guinea): ash explosions (updated 1 May 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 28 Apr 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 3 May 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): frequent moderate to large strombolian explosions (updated 3 May 2014)
Gamalama (Halmahera): ash eruptions since 17 Sep (updated 17 Sep 2012)
Grozny (Iturup Island): fumarolic activity (updated 3 Apr 2013)
Heard (Australia, Southern Indian Ocean): likely lava lake in summit crater (updated 1 Aug 2013)
Ibu (Halmahera, Indonesia): growing lava dome, occasional ash emissions (updated 30 Mar 2014)
Karkar (Northeast of New Guinea): possible ash eruption on 1 February (updated 27 Mar 2014)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 13 Apr 2014)
Kavachi (Solomon Islands): no eruption since 2007 (updated 2 Feb 2014)
Kilauea (Hawai'i): lava lakes in Halemau'uma'u and Pu'u 'O'o, lava flows on coastal flat and weakly active ocean entries (updated 13 Aug 2013)
Kizimen (Kamchatka): degassing (updated 22 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)
Nishino-shima (Volcano Islands): lava effusion enlarging the new island (updated 18 Apr 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)
Reventador (Ecuador): intermittent explosions, lava fountaining and lava flow emission on 23-24 April (updated 9 May 2014)
Sakurajima (Kyushu, Japan): ash venting, intermittent explosions (updated 28 Apr 2014)
Santa María / Santiaguito (Guatemala): Santiaguito volcano (Guatemala): lava flow on south flank of dome becomes more active (updated 28 Apr 2014)
Semeru (East Java, Indonesia): growing lava dome, ash venting and small to moderate explosions (updated 25 Jul 2012)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 1 May 2014)
Sinabung (Sumatra, Indonesia): effusion of viscous lava, steaming, ash emissions (updated 28 Apr 2014)
Slamet (Central Java): strombolian explosions from central crater (updated 30 Apr 2014)
Stromboli (Eolian Islands, Italy): continuing lava overflows (updated 25 Jul 2013)
Suwanose-jima (Ryukyu Islands): strombolian activity in summit crater (updated 1 May 2014)
Tinakula (Santa Cruz Islands, Solomon Islands): increased activity at the volcano (updated 8 Feb 2013)
Tungurahua (Ecuador): strombolian activity, effusion of lava flow on upper NW flank (updated 28 Apr 2014)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)

Eruption warning / minor activity:

Bezymianny (Central Kamchatka Depression): steaming, degassing (updated 10 Jun 2013)
Chirpoi (Kurile Islands, Russia): hot spot visible on satellite imagery (updated 1 May 2014)
Cleveland (Aleutian Islands, Alaska): occasional small explosions (updated 2 Mar 2014)
Copahue (Chile/Argentina): seismic unrest (updated 21 Mar 2014)
Dieng (Central Java): increased degassing (updated 28 Mar 2013)
Etna (Sicily, Italy): lava flow from base of New SE crater, strombolian explosions / ash emissions from NSEC (updated 19 Apr 2014)
Galeras (Colombia): sporadic ash emissions (updated 25 Jul 2013)
Gamkonora (Halmahera): seismic swam, minor ash emissions (updated 27 May 2013)
Iliwerung (Lesser Sunda Islands): possible submarine eruption from Mt Hobal on 20 August (updated 20 Aug 2013)
Iwo-Tori-shima (Ryukyu Islands): possible small ash eruption on 6 July 2013 (updated 6 Jul 2013)
Kelud (East Java): steaming, activity at crater unknown (updated 2 Mar 2014)
Kerinci (Sumatra): seismic unrest (updated 5 Jun 2013)
Ketoi (Kurile Islands, Russia)
Kikai (Ryukyu Islands): steaming at summit crater of Iodake, occasional weak glows (updated 5 Jun 2013)
Kirishima (Kyushu): degassing, alert lowered (updated 30 Jul 2012)
Krakatau (Sunda Strait, Indonesia): degassing (updated 31 Mar 2014)
Langila (New Britain, Papua New Guinea): occasional ash explosions (updated 11 Feb 2013)
Medvezhia (Kurile Islands, Russia): strong steaming, thermal anomaly (updated 17 Jan 2013)
Merapi (Central Java, Indonesia): sporadic phreatic explosions (updated 30 Apr 2014)
Nyamuragira (DRCongo): increased seismic activity (updated 13 Apr 2014)
Pacaya (Guatemala): weak strombolian activity in summit crater (updated 18 Apr 2014)
Papandayan (West Java): strong hydrothermal activity, increased seismicity (updated 6 May 2013)
Poas (Costa Rica): occasional small phreatic explosions, intense degassing (updated 30 Mar 2014)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 1 May 2014)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): weak ash explosions (updated 26 Aug 2013)
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)
Sacabaya (Northern Chile, Bolivia and Argentina)
San Cristobal (Nicaragua): possible ash emission on 11 April (updated 12 Apr 2014)
San Miguel (El Salvador): small explosions, seismic unrest, intense degassing (updated 28 Apr 2014)
Sangay (Ecuador): degassing (updated 24 May 2013)
Shishaldin (United States, Aleutian Islands): likely new dome building, weak explosions (updated 1 May 2014)
Soputan (North Sulawesi, Indonesia): degassing, seismic crisis, eruption warning (updated 1 May 2014)
Turrialba (Costa Rica): ash venting, strong degassing (updated 24 Jul 2013)
Ubinas (Peru): degassing, sporadic small explosions and ash venting (updated 9 May 2014)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)
White Island (New Zealand): strong degassing, volcanic tremor (updated 20 Aug 2013)
Zavodovski (South Sandwich Islands (UK)): no activity detected in recent weeks (updated 9 May 2014)

Previous news
Tue, 6 May 2014, 21:00
Kilauea (Hawai'i): (6 May) Eruption activity remains high on Kilauea, both at the summit and east rift zone. The lava lake within Halemaumau crater at the summit of Kilauea has fluctuated around an estimated 35m (115ft) below the crater floor. The glow produced at night from this lava lake is as bright as ever! ... read all
Mon, 5 May 2014, 22:00
Weak strombolian activity at Etna's NSEC (Montagnola webcam, INGV Catania)
Etna (Sicily, Italy): Sporadic small explosions continue at the New SE crater sometimes with pyroclastic material ejected outside the crater. ... read all
Sat, 3 May 2014, 21:00
Current tremor signal (ECPNZ station, INGV Catania)
Etna (Sicily, Italy): (2 May) A seismo-volcanic event occurred this night at 23:00 (local time) most probably from the Bocca Nuova crater. It wasn't visible on webcams but only on the seismic tremor and infrasound signals. ... read all
Fri, 2 May 2014, 21:00
Cerro Negro de Mayasquer (Colombia): The alert level of the twin-volcanoes Cerro Negro and Chiles has been raised to yellow in response to an ongoing seismic crisis and deformation that has been detected since November 2013, when a new monitoring network had been installed. ... read all
Thu, 1 May 2014, 08:11
Steaming and ash emission from Shiveluch this morning (KVERT webcam)
Shiveluch (Kamchatka): Activity is currently relatively low, but the volcano continues to extrude viscous lava into the dome. Occasional small avalanches, explosions and strong steaming accompany this activity. ... read all
 

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