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Volcanic activity worldwide 20 Sep 2013: Pacaya, Popocatépetl, Ubinas, Sinabung, Shikotsu, Santa Ma...

vr, 20 sep 2013, 09:53
09:53 AM |
Earthquakes near Tarumai in 2013
Earthquakes near Tarumai in 2013
Explosion from Popo early on 19 Sep
Explosion from Popo early on 19 Sep
Santiaguito's Caliente lava dome yesterday morning
Santiaguito's Caliente lava dome yesterday morning
Seismic signal this morning at Pacaya (PCG station, INSIVUMEH)
Seismic signal this morning at Pacaya (PCG station, INSIVUMEH)
Fuego yesterday morning (INSIVUMEH)
Fuego yesterday morning (INSIVUMEH)
Seismic signal from Ubinas 18 Sep (UB2 station, IGP)
Seismic signal from Ubinas 18 Sep (UB2 station, IGP)
Shikotsu (Hokkaido): The latest report of the Japan Meteorological Agency indicates some unrest at the caldera. Seismic activity accompanied by inflation were recorded under the western flank of Tarumai stratovolcano (the most active vent of the system, located on the SW rim of the Shikotsu caldera) between late June and early July this year.
Following this period of deformation, deep seismicity under the western flank has increased above background since the beginning of July. There are no reports of unusual surface phenomena.

Sinabung (Sumatra, Indonesia): Since the eruptions on 15 and 17 September, the volcano has been calm, but VSI warns that new eruptions could follow.
Such new eruptions are likely to follow the style of the last explosion, a sudden vulcanian-type eruption: it was proobably caused by accumulating viscous magma trapped under a solid plug in the crater, which was eventually disintegrated during an explosion when pressure exceeded the strength of the plug.
According to volcanologist Hendrasto, head of PVMBG, there are 29 villages at risk within a zone of 6 km radius around the volcano.

Popocatépetl (Central Mexico): Activity has remained at generally low levels with no large fluctuations. During 18-19 Sep, the number of small to moderate emissions has risen to about 2 per hour. Some of these events produced ash plumes up to about 1 km height, but frequent cloud cover prevented observation most of the time.
The most significant were registered at 01:01 h, 05:53 h, 08:10 h and 10:16 h (19 Sep) local time (see webcam video below):

Santa María / Santiaguito (Guatemala): Activity has been week with no significant changes. No explosions were reported during 18-19 Sep, but moderate rock avalanches could be heard, indicating that (some of) the lava flows on the flanks of the Caliente dome remain weakly active.

Pacaya (Guatemala): An increase in seismic activity has occurred gradually over the past 24 hours. Individual explosion signals have merged into strong continuous tremor. This could indicate another paroxysm with continuous explosions / lava fountaining / lava flow emission in the progress, but CONRED / INSIVUMEH have not (yet) updated on this possible increase in activity.
During the past days, the volcano had been producing frequent strombolian eruptions with jets of incandescent lava reaching 50-100 m above the Mackenney crater.

Fuego (Guatemala): No significant change in activity occurred over the past days. Small to moderate explosions that often are accompanied by shock waves occur from time to time (several times per day). Ash plumes rose up to about 600 m during 18-19 September.

Ubinas (Peru): While the volcano has calmed down at the surface since the series of 9 phreatic explosions during 1-5 September, a pulse of volcanic tremor yesterday could indicate that the volcanic crisis is not over or even still at the beginning.
The Geophysical Institute of Peru recorded changes in seismicity with the appearance tremor starting 02:00 local time on 18 September.
Even though the strength of the tremor signal is still small, it suggests that a body of new magma has started to heat up the hydrothermal system or is moving into the volcanic edifice. This in turn increased the likelihood of new and possibly magmatic eruptions (i.e. if the magma reaches the surface).

Volcano Activity Summary for 20 Sep 2013:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 16 Sep 2013)
Bagana (Bougainville Island, Papua New Guinea): ash explosions (updated 19 Sep 2013)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 18 Sep 2013)
Chirinkotan (Northern Kuriles): unspecified activity - possibly lava flows (updated 2 Sep 2013)
Cleveland (Aleutian Islands, Alaska): continuous small eruptions (updated 6 May 2013)
Colima (Western Mexico): lava flow on upper eastern flank (updated 19 Jul 2013)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 18 Sep 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): frequent moderate to strong strombolian to vulcanian explosions (updated 20 Sep 2013)
Gamalama (Halmahera): ash eruptions since 17 Sep (updated 17 Sep 2012)
Grozny (Iturup Island): fumarolic activity (updated 3 Apr 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 13 Aug 2013)
Kizimen (Kamchatka): growing lava dome and incandescent rock avalanches (updated 6 Sep 2013)
Klyuchevskoy (Kamchatka): strombolian activity at summit crater (updated 19 Sep 2013)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 12 Sep 2013)
Marapi (Western Sumatra, Indonesia): occasional weak explosions (updated 14 Aug 2013)
Nyiragongo (DRCongo): active lava lake in summit crater (updated 12 Jun 2013)
Ol Doinyo Lengai (Tanzania): effusion of natrocarbonatite lava inside the crater (updated 8 Jul 2013)
Pacaya (Guatemala): strombolian activity and lava flow (updated 20 Sep 2013)
Paluweh (off Flores Island, Indonesia): active growing lava dome (updated 12 Aug 2013)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): explosions and ash emissions (updated 12 Sep 2013)
Reventador (Ecuador): ash explosions, occasional pyroclastic flows (updated 19 Sep 2013)
Sakurajima (Kyushu, Japan): constant ash emissions and strong explosions (updated 13 Sep 2013)
Santa María / Santiaguito (Guatemala): Santiaguito volcano (Guatemala): lava flow on south flank of dome becomes more active (updated 20 Sep 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 12 Sep 2013)
Stromboli (Eolian Islands, Italy): continuing lava overflows (updated 25 Jul 2013)
Suwanose-jima (Ryukyu Islands): Mt Ontake volcano of Suwanose-jima Island, Japan (updated 12 Sep 2013)
Tinakula (Santa Cruz Islands, Solomon Islands): increased activity at the volcano (updated 8 Feb 2013)
Yasur (Tanna Island, Vanuatu): strong strombolian activity (level 3), crater currently closed (updated 10 Sep 2013)

Eruption warning / minor activity:

Bezymianny (Central Kamchatka Depression): slow lava flow extrusion from dome (updated 6 Sep 2013)
Copahue (Chile/Argentina): degassing, weak sporadic ash emissions (updated 16 Aug 2013)
Dieng (Central Java): increased degassing (updated 28 Mar 2013)
Etna (Sicily, Italy): sporadic ash emissions from New SE crater (updated 17 Sep 2013)
Galeras (Colombia): sporadic ash emissions (updated 25 Jul 2013)
Gamkonora (Halmahera): seismic swam, minor ash emissions (updated 27 May 2013)
Heard (Australia, Southern Indian Ocean): likely lava lake in summit crater (updated 10 Sep 2013)
Ibu (Halmahera, Indonesia): growing lava dome, seismic unrest (updated 9 Jun 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)
Karangetang (Siau Island, Sangihe Islands, Indonesia): lava extrusion at summit crater, strombolian activity, glowing avalanches (updated 4 Sep 2013)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 6 Sep 2013)
Kerinci (Sumatra): occasional ash explosions (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, slightly increased seismic activity (updated 30 Jul 2012)
Krakatau (Sunda Strait, Indonesia): occasional explosions (updated 27 Jun 2013)
Langila (New Britain, Papua New Guinea): occasional ash explosions (updated 11 Feb 2013)
Manam (Papua New Guinea): occasional explosions (updated 12 Sep 2013)
Medvezhia (Kurile Islands, Russia): strong steaming, thermal anomaly (updated 17 Jan 2013)
Merapi (Central Java): moderate gas and ash plume on 22 july (updated 24 Jul 2013)
Nevado del Ruiz (Colombia): seismic unrest (updated 14 Sep 2013)
Nyamuragira (DRCongo): steaming/degassing from pit inside summit caldera (updated 18 Jul 2013)
Papandayan (West Java): strong hydrothermal activity, increased seismicity (updated 6 May 2013)
Poas (Costa Rica): occasional small phreatic explosions from lake (updated 22 Aug 2013)
Popocatépetl (Central Mexico): steam/gas/ash emissions (updated 19 Sep 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)
Sangay (Ecuador): no recent explosions reported (updated 24 May 2013)
Sinabung (Sumatra, Indonesia)
Tolbachik (Kamchatka): effusion of fluid lava flows (updated 6 Sep 2013)
Tungurahua (Ecuador): degassing, earthquake swarm and inflation (updated 14 Sep 2013)
Turrialba (Costa Rica): ash venting, strong degassing (updated 24 Jul 2013)
Ubinas (Peru): occasional phreatic explosions (updated 20 Sep 2013)
Ulawun (New Britain, Papua New Guinea): steaming, degassing (updated 12 Sep 2013)
Veniaminof (Alaska Peninsula, USA): effusion of lava flows (updated 16 Sep 2013)
White Island (New Zealand): strong degassing, volcanic tremor (updated 20 Aug 2013)

Vorig nieuws
Thu, 19 Sep 2013, 17:03
Klyuchevskoy volcano last evening with glow from the active lava flow
Klyuchevskoy (Kamchatka): (19 Sep) Lava flows remain active on the SW upper flank and are often visible on the beautiful KVERT webcam. ... Lees alle
Wed, 18 Sep 2013, 17:03
Recent earthquakes under Mauna Loa volcano
Batu Tara (Sunda Islands, Indonesia): Explosions that produce ash plumes large enough to be spotted on satellite images occur almost daily now. ... Lees alle
Tue, 17 Sep 2013, 17:03
Ash emission from New SE crater yesterday evening (LAVE webcam via etnawalk.it)
Etna (Sicily, Italy): After a phase of complete quiet since 13 September, weak ash emissions occurred again at the New SE crater during the night 16-17 Sep, accompanied by a slight rise of tremor. This activity ceased again during the early hours of today. ... Lees alle
Mon, 16 Sep 2013, 15:27
Italy's Volcanoes - Dr. Boris Behncke's fantastic website about Etna and other Italian volcanoes back on the internet at www.italysvolcanoes.com
Etna (Sicily, Italy): (16 Sep) A jewel on the internet - one of (if not THE) most comprehensive and informative websites about Italy's volcanoes (and beyond), Dr. Boris Behncke's Italy's Volcanoes is back on the internet, in its original version with no retouching. ... Lees alle
Sun, 15 Sep 2013, 17:03
Webcam image showing the lava glow (likely from a new lava flow or impacts from explosions) starting at 02:55 local time this morning (VSI webcam)
Batu Tara (Sunda Islands, Indonesia): Activity remains strong with frequent explosions of strombolian to vulcanian type. An eruption this morning produced an ash plume detected on satellite images. VAAC Darwin estimated the elevation at 7,000 ft (2.1 km). ... Lees alle
 

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