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Volcanic activity worldwide 28 Aug 2013: Pacaya, Kliuchevskoi, Tolbachik, Santa María / Santiaguito...

Wednesday Aug 28, 2013 09:04 AM |

Klyu seen from the KVERT observatory this morning; the lava flow is indicated by the white plume rising on the right side of the upper flank
Klyu seen from the KVERT observatory this morning; the lava flow is indicated by the white plume rising on the right side of the upper flank
Strombolian activity from Pacaya 26 Aug evening and seismic recording (CONRED image)
Strombolian activity from Pacaya 26 Aug evening and seismic recording (CONRED image)
Kliuchevskoi (Kamchatka): A small lava flow has started to descend on the upper northern flank of the volcano. Sometimes intense strombolian continues at the summit vent. Glowing blocks from the lava flow often detach from the front and roll down the steep slope of the volcano. No significant ash emissions have occurred so far.

Tolbachik (Kamchatka): The eruption seems to be coming to an end. Seismic activity dropped from still moderately high levels (2.4 mcm/s) to very low (0.12 mcm/s) on 24 Aug, and the effusion of lava has stopped. No incandescence was spotted in the area of the vent during the past days. The Aviation Color Code was lowered to yellow.

Sakurajima (Kyushu, Japan): Activity remains at high levels. Over the past 24 hours, the volcano has had 8 explosions recorded by VAAC Tokyo, with ash plumes rising to up to 12,000 ft altitude. The following shows an explosion this morning seen from Kagoshima:


Suwanose-jima (Ryukyu Islands): The volcano has entered an eruptive phase with frequent explosions, which over the past 2 days produced several ash plumes rising as high as 12,000 ft (3.6 km) altitude.

Manam (Papua New Guinea): Another ash plume was spotted earlier today reaching 10,000 ft and suggesting that the volcano has stepped up its activity recently.

Popocatépetl (Central Mexico): Activity has been low over the past days with little changes overall. The volcano continues to produce important degassing and has occasional small explosions. Glow at the summit can be seen when the weather is clear, indicating that lava continues to slowly extrude in the crater.

Santa María / Santiaguito (Guatemala): A moderate explosion took place yesterday morning at 03:24 h local time, generating an eruption column rising 1.3 km, a pyroclastic flow on the SW flank of the dome, and an ash plume that drifted southwest and caused ashfall on Palajunoj.
The viscous lava flow on the southern flank of the dome remained active.

Pacaya (Guatemala): INSIVUMEH reports ongoing mild strombolian activity and the appearance of a new lava flow yesterday. The explosions occurred at rhythms of 4-10 minute intervals and ejected glowing lava to about 75 m height. The lava flow on the western flank of the Mackenney crater reached a length of 150-200 m.
Judging from the seismogram, activity has decreased a bit today.

Fuego (Guatemala): Activity has not seen significant changes over the past days. Mild to moderate explosions (14 during 26-27 Aug counted) produce ash plumes of 200-500 m height and weak to moderate glowing avalanches of bombs on the upper slopes.

Volcano Activity Summary for 28 Aug 2013:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 14 Aug 2013)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 16 Aug 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 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): strombolian activity, new lava flow on upper southern flank (updated 28 Aug 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): likely lava lake in summit crater (updated 1 Aug 2013)
Karkar (Northeast of New Guinea): possible ash eruption on 1 February (updated 15 Mar 2013)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 22 Aug 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 22 Aug 2013)
Kliuchevskoi (Kamchatka): strombolian activity at summit crater (updated 28 Aug 2013)
Lokon-Empung (North Sulawesi, Indonesia): steaming, degassing, occasional ash explosions (updated 25 Jul 2013)
Manam (Papua New Guinea): occasional explosions (updated 28 Aug 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 in summit crater and lava flow on western flank (updated 28 Aug 2013)
Paluweh (off Flores Island, Indonesia): active growing lava dome (updated 12 Aug 2013)
Reventador (Ecuador): lava flow on upper southern flank, numerous small to moderate explosions (updated 17 Aug 2013)
Sakurajima (Kyushu, Japan): constant ash emissions and strong explosions (updated 28 Aug 2013)
Santa María / Santiaguito (Guatemala): Santiaguito volcano (Guatemala): lava flow on south flank of dome becomes more active (updated 28 Aug 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 22 Aug 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 28 Aug 2013)
Tinakula (Santa Cruz Islands, Solomon Islands): increased activity at the volcano (updated 8 Feb 2013)
Veniaminof (Alaska Peninsula, USA): effusion of lava flows (updated 16 Aug 2013)
Yasur (Tanna Island, Vanuatu): strong strombolian activity (level 3), crater currently closed (updated 14 Aug 2013)

Eruption warning / minor activity:

Bagana (Bougainville Island, Papua New Guinea): ash explosions (updated 26 Aug 2013)
Bezymianny (Central Kamchatka Depression): slow lava flow extrusion from dome (updated 10 Jun 2013)
Chirinkotan (Northern Kuriles): unspecified activity - possibly lava flows (updated 7 Aug 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): steaming, degassing (updated 2 Aug 2013)
Galeras (Colombia): sporadic ash emissions (updated 25 Jul 2013)
Gamkonora (Halmahera): seismic swam, minor ash emissions (updated 27 May 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)
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)
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)
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 28 Aug 2013)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): explosions and ash emissions (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)
Sangay (Ecuador): no recent explosions reported (updated 24 May 2013)
Tungurahua (Ecuador): degassing, earthquake swarm and inflation (updated 14 Aug 2013)
Turrialba (Costa Rica): ash venting, strong degassing (updated 24 Jul 2013)
Ulawun (New Britain, Papua New Guinea): steaming, degassing (updated 5 Aug 2013)
White Island (New Zealand): strong degassing, volcanic tremor (updated 20 Aug 2013)

Previous news
MODIS hot spot data (past 7 days) for Tavurvur volcano (ModVolc, Univ. Hawaii)
Monday, Aug 26, 2013
Monte Albano (Italy): What appears to be a new fumarole appeared near Rome's International Fiumicino airport Saturday morning. A vent producing small geyser-like fountains of steam, water and mud suddenly opened in the ground near a road crossing near Fiumicino. ... [more]
MODIS hot spot data (past 7 days) for Sakurajima volcano (ModVolc, Univ. Hawaii)
Friday, Aug 23, 2013
Sakurajima (Kyushu, Japan): On 21 August, the volcano had at least 8 (!) vulcanian-type explosions with ash plumes rising up to 15,000 ft (4,5 km) altitude that often drifted over the bay and Kagoshima city, causing ash fall there. Some of the explosions can be seen on the following time-lapse video. The volcano has been in an elevated state of activity during the past weeks. A significant hot spot is visible on MODIS data, suggesting that magma levels are high in the crater and the presence of significant amounts of still hot fresh deposits on the flanks. ... [more]
Glowing rock avalanche from Kizimen last night
Thursday, Aug 22, 2013
Kizimen (Kamchatka): The lava dome continues to grow at the top of the volcano and produce incandescent rockfalls and small pyroclastic flows, generating ash plumes. A new prominent spine is being extruded at the top and visible on the webcam. The following time-lapse movies show this activity during the day and night: ... [more]
Phreatic explosion at White Island this morning (GeoNet webcam)
Tuesday, Aug 20, 2013
Iliwerung (Lesser Sunda Islands): A submarine eruption has likely occurred this morning in Indonesia. VSI raised the alert level of Iliwerung volcano from 1 (normal) to 2 (watch) following increased seismic and visual activity from an underwater flank vent called Gunung Hobal. ... [more]
View of Popocatépetl this morning
Monday, Aug 19, 2013
Sakurajima (Kyushu, Japan): A very large vulcanian explosion, one of the largest during this year occurred yesterday morning. It produced a mushroom shaped ash column that rose to about 20,000 ft (6 km) altitude that drifted over the Kagoshima town where ash fall occurred. ... [more]

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