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Volcanic activity worldwide 29 Jul 2013: Shiveluch, Karangetang, Tungurahua, Ambrym, White Island, Sakurajima

Monday Jul 29, 2013 17:04 PM |

Seismic signal from White Island on 28 July (GeoNet)
Seismic signal from White Island on 28 July (GeoNet)
Shiveluch (Kamchatka): Activity has been elevated during the past days. Several explosions and / or dome collapse events have sent ash plumes to about 20,000 ft (6 km) elevation during the past days.

Sakurajima (Kyushu, Japan): Activity remains high - explosions occur at more-than-usual frequency from the Showa crater. An eruption on 27 July produced an ash plume rising to 18,000 ft (5.7 km) altitude, i.e. an eruption plume about 4.5 km tall.

Karangetang (Siau Island, Sangihe Islands, Indonesia): VSI has decreased the alert level from 3 (Siaga, Alert) (since 8 August 2011) back to 2 (Waspada, watch). No lava emissions/ejections have been observed since 7 July and seismic actity has been decreasing over the past weeks. No hot spot is visible on satellite imagery.

Ambrym (Vanuatu): A seismic swarm at the volcano was detected on 26 July, but no evidence of unusual activity at the surface has been detected. The lava lakes inside Benbow and Marum remain active.

White Island (New Zealand): The seismic crisis ended on 28 July with no eruption. Degassing remains elevated and incandescence is still visible from the dome in the crater.

Tungurahua (Ecuador): During the past days, a further increase in activity of the volcano occurred, characterized by the generation of large explosions and a constant ash eruption column, and several small to big explosions that generated strong vibrations and rattled windows in villages near the volcano. An eruption at 07:23 (local time) on 28 July generated a small pyroclastic flow that affected the upper north and north east flank of the volcano.
Constant ash emissions produce a an ash column of up to 1.5 km height, drifting westwards. Ash fell in the town of Mocha.
... [read more]

Volcano Activity Summary for 29 Jul 2013:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 29 Jul 2013)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 3 Jun 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 26 Jul 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 5 Jul 2013)
Kizimen (Kamchatka): growing lava dome, lava flow on eastern flank, avalanches (updated 22 Jul 2013)
Lokon-Empung (North Sulawesi, Indonesia): steaming, degassing, occasional ash explosions (updated 25 Jul 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 (updated 25 Jul 2013)
Paluweh (off Flores Island, Indonesia): active growing lava dome (updated 20 Jun 2013)
Popocatépetl (Central Mexico): steam/gas/ash emissions (updated 26 Jul 2013)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): weak explosions and ash emissions (updated 14 Mar 2013)
Raung (East Java): strombolian activity in summit crater (updated 24 Jul 2013)
Reventador (Ecuador): lava flow on upper southern flank, numerous small to moderate explosions (updated 25 Jul 2013)
Sakurajima (Kyushu, Japan): constant ash emissions and strong explosions (updated 29 Jul 2013)
Santa María / Santiaguito (Guatemala): Santiaguito volcano (Guatemala): lava flow on south flank of dome becomes more active (updated 26 Jul 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 29 Jul 2013)
Stromboli (Eolian Islands, Italy): continuing lava overflows (updated 25 Jul 2013)
Tinakula (Santa Cruz Islands, Solomon Islands): increased activity at the volcano (updated 8 Feb 2013)
Tolbachik (Kamchatka): effusion of fluid lava flows (updated 25 Jul 2013)
Tungurahua (Ecuador): strong strombolian activity and vulcanian explosions (updated 29 Jul 2013)
Veniaminof (Alaska Peninsula, USA): effusion of lava flows (updated 26 Jul 2013)
Yasur (Tanna Island, Vanuatu): strong strombolian activity (level 3), crater currently closed (updated 29 May 2013)

Eruption warning / minor activity:

Bagana (Bougainville Island, Papua New Guinea): ash explosions (updated 22 Jul 2013)
Bezymianny (Central Kamchatka Depression): slow lava flow extrusion from dome (updated 10 Jun 2013)
Chirinkotan (Northern Kuriles): unspecified activity - possibly lava flows (updated 25 Jul 2013)
Chirpoi (Kurile Islands, Russia): hot spot visible on satellite imagery (updated 14 Jul 2013)
Copahue (Chile/Argentina): degassing, weak sporadic ash emissions (updated 7 Jul 2013)
Dieng (Central Java): increased degassing (updated 28 Mar 2013)
Etna (Sicily, Italy): steaming, degassing (updated 3 Jul 2013)
Galeras (Colombia): sporadic ash emissions (updated 25 Jul 2013)
Gamkonora (Halmahera): seismic swam, minor ash emissions (updated 27 May 2013)
Gaua (Vanuatu): possible ash eruption on 29 april (updated 29 Apr 2013)
Heard (Australia, Southern Indian Ocean): possible lava lake in summit crater (updated 25 Jul 2013)
Ibu (Halmahera, Indonesia): growing lava dome, seismic unrest (updated 9 Jun 2013)
Iwo-Tori-shima (Ryukyu Islands): possible small ash eruption on 6 July 2013 (updated 6 Jul 2013)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 4 Apr 2013)
Kerinci (Sumatra): occasional ash explosions (updated 5 Jun 2013)
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): steaming, occasional ash eplosions (updated 25 Jun 2013)
Marapi (Western Sumatra, Indonesia): intermittent mild ash explosions (updated 17 Mar 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): occasional ash venting (updated 20 Jun 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): Small phreatic explosions on 29 October (updated 1 May 2013)
Rasshua (Central Kuriles)
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)
Turrialba (Costa Rica): ash venting, strong degassing (updated 24 Jul 2013)
Ulawun (New Britain, Papua New Guinea): steaming, occasional weak ash emissions (updated 20 Jul 2013)
Villarrica (Central Chile): weak deep-seated explosive activity, steaming (updated 20 Jan 2013)

Vorig nieuws
Current seismic recording from White Island (GeoNet)
Saturday, Jul 27, 2013
Ketoi (Kurile Islands, Russia): (26 Jul) SVERT raised the alert level to yellow after a weak thermal anomaly has been detected on satellite data at the summit of the volcano. No other details about possible activity are currently known. ... [meer...]
This morning's seismic signal from Pacaya (PCG station, INSIVUMEH)
Thursday, Jul 25, 2013
Stromboli (Eolian Islands, Italy): Activity has been at relatively low to moderate levels recently. Explosions of small to medium size occur regularly from the "usual" (mainly the eastern and western) vents. ... [meer...]
Strombolian eruption from Raung on 21 July (photo Agus Kurniawan)
Wednesday, Jul 24, 2013
Raung (East Java): (24 Jul) Mild strombolian activity is taking place from the intra-crater cone, a recent photo shows. ... [meer...]
MODIS hot spot data (past 7 days) for Tolbachik volcano (ModVolc, Univ. Hawaii)
Wednesday, Jul 24, 2013
Tolbachik (Kamchatka): There are no signs of the eruption ending soon. Although an overall weakly decreasing trend is visible over the past months, tremor levels reported by KVERT remained stable during the past week and lava continues to be erupted form the southern fissure, feeding a vast flow field mainly SE of the volcano. ... [meer...]
Multilope pyroclastic flows (block and ash flows) yesterday morning at Kizimen (annotation by Culture Volcan)
Monday, Jul 22, 2013
Kizimen (Kamchatka): (22 Jul) A rock spine that had been growing at the summit of the active lava dome has collapsed, producing pyroclastic flows and an ash plume rising to 20,000 ft (6 km) altitude. ... [meer...]

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