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Volcanic activity worldwide 29 May 2013: Popocatépetl, Nyiragongo, Pavlov, Yasur, Nevado del Ruiz, ...

mer., 29 mai 2013, 14:06 14:06 PM |
Steam and ash plume from Yasur on 8 May 2013 and hazard map of Yasur volcano and explanation of status levels (Geohazards)
Steam and ash plume from Yasur on 8 May 2013 and hazard map of Yasur volcano and explanation of status levels (Geohazards)
Current webcam view of Popocatépetl
Current webcam view of Popocatépetl
Seismic recording this morning at Nevado del Ruiz (OLL station, INGEOMINAS)
Seismic recording this morning at Nevado del Ruiz (OLL station, INGEOMINAS)
SO2 plume from Nyiragongo (NOAA)
SO2 plume from Nyiragongo (NOAA)
Tolbachik (Kamchatka): Eruptive activity continues, with fluid lava flows from the southern fissure being still emitted. However, also a very slow trend of decreasing tremor is visible.
KVERT reports no significant changes in activity at any of the other volcanoes in Kamchatka: lava extrusion and dome building continue at Sheveluch and Kizimen. No seismic data are available at the moment from Karymski and Bezymianny, which also continues to slowly build a lava dome. Gorely produces medium levels of seismicity caused by fluid movements and strong degassing.

Yasur (Tanna Island, Vanuatu): Explosive (strombolian) activity level has been increasing recently, the latest bulletin of Geohazard today indicates. The alert level remains at 2, but an increase to 3 is possible in the near future.

Elevated risk of impacts remains near the volcano's crater, as bombs have started to fall near and in the parking area. A thick steam and ash plume is being emitted from the active vents, and there is ash fall in communities downwind.
... [read more]

Pavlov (Alaska Peninsula, USA): The eruption might have ended already, or is at least pausing for the moment. Over the past few days, the eruptive and seismic activity have greatly declined, the Alaska Volcano Observatory reports.
There are no longer volcanic tremor or small explosions detected and satellite observations show no evidence of elevated surface temperatures, volcanic gas or ash emissions. There have been no visual observations from pilots or web cameras of any eruptive activity. "Consequently, the Aviation Color Code is being reduced to Yellow and the Volcano Alert Level to Advisory.
... [read more]

Popocatépetl (Central Mexico): Since yesterday morning's explosion, the volcano has been relatively quiet and only produced about 1 weak emission of mostly steam per hour.
No significant new earthquakes or tremor pulses have occurred.

Nevado del Ruiz (Colombia): Small earthquake swarms at shallow depth continue to plague the volcano. They suggest ongoing (small) magmatic intrusions.
The other 5 volcanoes in Colombia currently on alert have not shown significant variations in activity (Galeras: degassing, occasional small ash venting, Cumbal, Machin, Sotará: seismic unrest but no surface activity, Nevado del Huila: degassing/steaming).

Copahue (Chile/Argentina): The earthquake swarm has increased and continues today, but the volcano has not yet erupted. The earthquakes are occurring at very high frequency (130 per hour) and are mostly "hybrid", i.e. related to both rock-fracturing and fluid-movements within the volcanic edifice.
Evacuations in the area have progressed, but faced serious difficulties due to heavy snowfall and also because many residents in nearby villages are reluctant to leave their homes and live stock, especially in the municipalities of Butalelbùn (north side) and El Barco (south-west).
... [read more]

Nyiragongo (DRCongo): A significant SO2 plume is visible today on NOAA satellite data, suggesting continuing lava lake activity at the volcano. Unfortunately, security issues in the Goma-Virunga area continue to prevent us from organizing expeditions for the time being.

Volcano Activity Summary for 29 May 2013:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 2 May 2013)
Bagana (Bougainville Island, Papua New Guinea): ash explosions (updated 25 May 2013)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 6 May 2013)
Cleveland (Aleutian Islands, Alaska): continuous small eruptions (updated 6 May 2013)
Colima (Western Mexico): frequent explosions from growing lava dome, glowing rockfalls and small pyroclastic flows (updated 25 Apr 2013)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 2 May 2013)
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): weak to moderate strombolian activity (updated 25 May 2013)
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): possible lava lake in summit crater (updated 2 May 2013)
Karkar (Northeast of New Guinea): possible ash eruption on 1 February (updated 15 Mar 2013)
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 20 Apr 2013)
Kizimen (Kamchatka): growing lava dome, lava flow on eastern flank, avalanches (updated 19 May 2013)
Lokon-Empung (North Sulawesi, Indonesia): frequent small to moderate ash explosions (updated 6 May 2013)
Manam (Papua New Guinea): strombolian explosions, lava flow on southern flank (updated 16 Apr 2013)
Nyiragongo (DRCongo): active lava lake in summit crater (updated 29 May 2013)
Ol Doinyo Lengai (Tanzania): spattering and lava flows of natrocarbonatite lava inside the summit crater (updated 9 Dec 2012)
Pacaya (Guatemala): mild strombolian activity (updated 25 May 2013)
Paluweh (off Flores Island, Indonesia): active growing lava dome (updated 24 May 2013)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): ash emissions, small explosions (updated 14 Mar 2013)
Sakurajima (Kyushu, Japan): 0-3 weak to moderate vulcanian-style explosions per day, ash clouds up to 2-3 km altitude (updated 25 May 2013)
Santa María / Santiaguito (Guatemala): advancing viscous active lava flows, weak occasional explosions (updated 25 May 2013)
Semeru (East Java, Indonesia): growing lava dome, ash venting and small to moderate explosions (updated 25 Jul 2012)
Shiveluch (Kamchatka): slow dome growth, occasional explosions and pyroclastic flows (updated 19 May 2013)
Stromboli (Eolian Islands, Italy): continuing lava overflows (updated 25 May 2013)
Tinakula (Santa Cruz Islands, Solomon Islands): increased activity at the volcano (updated 8 Feb 2013)
Tolbachik (Kamchatka): effusion of fluid lava flows (updated 29 May 2013)
Yasur (Tanna Island, Vanuatu): strong strombolian activity (level 3), crater currently closed (updated 29 May 2013)

Eruption warning / minor activity:

Bezymianny (Central Kamchatka Depression): slow lava flow extrusion from dome (updated 10 Mar 2013)
Chirinkotan (Northern Kuriles): unspecified activity - possibly lava flows (updated 24 May 2013)
Chirpoi (Kurile Islands, Russia): thermal anomaly at summit crater, steaming (updated 9 Jan 2013)
Copahue (Chile/Argentina): ash venting, strong degassing (updated 29 May 2013)
Dieng (Central Java): increased degassing (updated 28 Mar 2013)
Etna (Sicily, Italy): ash emissions and strombolian activity at New SE crater (updated 24 May 2013)
Galeras (Colombia): sporadic ash emissions (updated 17 May 2013)
Gamkonora (Halmahera): seismic swam, minor ash emissions (updated 27 May 2013)
Gaua (Vanuatu): possible ash eruption on 29 april (updated 29 Apr 2013)
Gorely (Southern Kamchatka): strong steaming (updated 10 Mar 2013)
Ibu (Halmahera, Indonesia): Thermal anomalies indicate continuing eruption, possible lava dome growth (updated 18 Oct 2012)
Karangetang (Siau Island, Sangihe Islands, Indonesia): hot spot visible at the summit (updated 9 Apr 2013)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 4 Apr 2013)
Kirishima (Kyushu): degassing, slightly increased seismic activity (updated 30 Jul 2012)
Krakatau (Sunda Strait, Indonesia): occasional explosions (updated 1 Oct 2012)
Langila (New Britain, Papua New Guinea): occasional ash explosions (updated 11 Feb 2013)
Marapi (Western Sumatra, Indonesia): intermittent mild ash explosions (updated 17 Mar 2013)
Mayon (Luzon Island): phreatic explosions (updated 7 May 2013)
Medvezhia (Kurile Islands, Russia): strong steaming, thermal anomaly (updated 17 Jan 2013)
Nevado del Ruiz (Colombia): sporadic ash emissions (updated 29 May 2013)
Nyamuragira (DRCongo): Fort dégazage du cratère sommital (updated 27 Apr 2012)
Pagan (Mariana Islands): steaming, thermal anomaly (updated 12 Dec 2012)
Papandayan (West Java): strong hydrothermal activity, increased seismicity (updated 6 May 2013)
Poas (Costa Rica): Small phreatic explosions on 29 October (updated 1 May 2013)
Popocatépetl (Central Mexico): strong degassing, ash explosions, growing lava dome (updated 29 May 2013)
Rasshua (Central Kuriles)
Reventador (Ecuador): growing lava dome, lava flows on upper flank, frequent explosions (updated 25 May 2013)
Rincón de la Vieja (Costa Rica): small phreatic eruption on 11 April (updated 6 Oct 2012)
Sacabaya (Northern Chile, Bolivia and Argentina)
Sangay (Ecuador): no recent explosions reported (updated 24 May 2013)
Sangeang Api (Indonesia): degassing, increased seismic activity (updated 21 May 2013)
Soputan (North Sulawesi, Indonesia): new eruption on 18 (updated 22 Apr 2013)
Suwanose-jima (Ryukyu Islands): steaming, occasional weak eruptions, elevated seismicity (updated 23 Feb 2013)
Turrialba (Costa Rica): ash venting, strong degassing (updated 22 May 2013)
Ulawun (New Britain, Papua New Guinea): ash emissions and rumblings heard (updated 23 Mar 2013)
Villarrica (Central Chile): weak deep-seated explosive activity, steaming (updated 20 Jan 2013)

Actualités précédentes

mar., 28 mai 2013, 17:04

Volcanic activity worldwide 28 May 2013: Popocatépetl, Nevado del Ruiz, Copahue

Explosion from Popocatépetl this morning
Popocatépetl (Central Mexico): An explosion early today at 05:03 h (local time) ejected incandescent fragments to 1.5 km distance from the crater on the northeastern slope and generated a column of ash that reached more than 2 km height above the crater and was dispersed to the SW. ... Read all
lun., 27 mai 2013, 15:05

Volcanic activity worldwide 27 May 2013: Popocatépetl, Gamkonora, Pavlov, Telica, Sabancaya

Seismic recording from Telica this morning (TELN station, INETER)
Gamkonora (Halmahera): Increased earthquake activity has triggered an eruption alert by VSI, who raised the volcano's status to 3 ("Siaga", "warning") out of 4 this morning. Indonesian volcanologists reported that the degassing plume from the summit crater of the volcano has turned dark, which suggests the presence of ash (probably phreatic in origin) since 25 May. ... Read all
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