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Volcanic activity worldwide 21 Aug 2015: Karymsky volcano, Colima, Merapi, Shiveluch, Dukono, Sinabu...

Freitag Aug 21, 2015 11:23 |

Ash emission from Etna's Voragine (photo: Boris Behncke / twitter)
Ash emission from Etna's Voragine (photo: Boris Behncke / twitter)
Ash plume from a small collapse / pyroclastic flow on Shiveluch 19 Aug
Ash plume from a small collapse / pyroclastic flow on Shiveluch 19 Aug
Sakurajima's lava dome inside Showa crater
Sakurajima's lava dome inside Showa crater
Explosion from Sinabung yesterday (photo: Endro Lëwå / facebook)
Explosion from Sinabung yesterday (photo: Endro Lëwå / facebook)
Ash plume from Colima this morning
Ash plume from Colima this morning
Ash emissions from Cotopaxi yesterday morning
Ash emissions from Cotopaxi yesterday morning
Etna (Sicily, Italy): Etna has been mostly calm during the past months. However, signs of unrest have appeared in the form of dilute ash emissions from the central crater (Voragine).
The emissions originate probably from older material, but according to volcanologists, magma is not far from the surface.

Karymsky (Kamchatka): The volcano is currently in a comparably more active phase. Reports of ash plumes from stronger strombolian to vulcanian type explosions have become more frequent.
This morning, Tokyo VAAC reported a plume reaching 12,000 ft (3.6 km) altitude drifting north from the volcano.

Shiveluch (Kamchatka): Slow growth of the lava dome continues although the volcano has been comparably calm recently. Only smaller collapses and associated pyroclastic flows and ash plumes (such as one on 19 Aug) occurred.

Sakurajima (Kyushu, Japan): A pancake-shaped flat dome of lava has been detected inside the Showa summit crater. This type of dome is typical for moderately viscous and gas-poor lava (typically andesitic composition) extruded at subduction-zone stratovolcanoes.
The alert level of the volcano remains at 4 out of 5. One possibility is that the dome corresponds to older lava from the upper conduit that has been pushed out by a rising batch of fresher lava still inside the volcano.

Manam (Papua New Guinea): A small explosion occurred this morning. Darwin VAAC reported an ash plume to 7,000 ft (2.1 km) altitude extending 8 km ESE from the volcano.

Sinabung (Sumatra, Indonesia): An explosion from the summit dome occurred yesterday morning, producing a plume that rose approx. 2 km.
Occasional smaller pyroclastic flows continued to occur during the past weeks as well, as the lava dome and its active lobes remain weakly active.

Merapi (Central Java, Indonesia): A reported ash plume yesterday has been confirmed to be from a bush fire. The volcano remains calm.

Dukono (Halmahera): Several ash plumes have been observed during the past days rising from the volcano and drifting up to 50 km NE.

Colima (Western Mexico): Explosions every few hours continue to occur, sending plumes of ash to 2-3 km above the volcano's summit crater.

Cotopaxi (Ecuador): The volcano continues to be relatively calm. Modest ash emissions occurred yesterday morning producing plumes that rose a few 100 m above the summit and were then pushed down by strong winds along the flank of the volcano.
A beautiful 3D view of the volcano based on satellite images was published by Agroprecision / Airbus:

Volcano Activity Summary for 21 Aug 2015:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 24 May 2015)
Aso (Kyushu): intense strombolian activity from main vent in Nakadake crater (updated 8 Aug 2015)
Bagana (Bougainville Island, Papua New Guinea): ash emissions, lava dome growth (updated 5 Jun 2015)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 5 Jul 2015)
Calbuco (Southern Chile and Argentina): steaming (updated 30 Apr 2015)
Colima (Western Mexico): intermittent explosions from summit crater (updated 21 Aug 2015)
Copahue (Chile/Argentina): ash venting (updated 4 Dec 2014)
Cotopaxi (Ecuador): vulcanian explosions (updated 16 Aug 2015)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 21 Aug 2015)
Erebus (Antarctica): active lava lake in summit crater (updated 8 Dec 2014)
Erta Ale (Ethiopia): active lava lake in northern pit crater, active hornito with intermittend flow in southern crater (updated 11 Jan 2013)
Fuego (Guatemala): intermittent strombolian explosions (updated 18 Aug 2015)
Ibu (Halmahera, Indonesia): stromolian and phreatomagmatic explosions (updated 14 Nov 2014)
Karangetang (Siau Island, Sangihe Islands, Indonesia): viscous lava effusion from summit vent, incandescent avalanches on southern flank (updated 18 Aug 2015)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 21 Aug 2015)
Kilauea (Hawai'i): new lava flow from vents on NE flank of Pu'u 'O'o (updated 28 Apr 2015)
Kliuchevskoi (Kamchatka): ash emissions, weak strombolian activity (updated 11 May 2015)
Manam (Papua New Guinea): large explosion on 31 July 2015 (updated 21 Aug 2015)
Mount Olympus (Mars)
Nishino-shima (Volcano Islands, Japan): growing island (updated 8 Aug 2015)
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)
Pacaya (Guatemala): weak strombolian activity in summit crater (updated 18 Aug 2015)
Poas (Costa Rica): phreatic explosions (updated 14 Oct 2014)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 18 Aug 2015)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): lava fountains, ash emissions from Tavurvur cone (updated 12 Sep 2014)
Reventador (Ecuador): lava flow on SW flank (updated 17 Aug 2015)
Sakurajima (Kyushu, Japan): seismic swarm, eruption warning (updated 19 Aug 2015)
Sangay (Ecuador): likely strombolian eruptions at summit crater (updated 13 Mar 2015)
Sangeang Api (Indonesia): lava flow on SE flank (updated 10 Jul 2015)
Santiaguito (Guatemala): small explosions from the Caliente dome and active lava flow (updated 18 Aug 2015)
Semeru (East Java, Indonesia): growing lava dome, lava flow, strombolian activity (updated 16 Jun 2015)
Shiveluch (Kamchatka): growing lava dome (updated 21 Aug 2015)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 21 Aug 2015)
Soputan (North Sulawesi, Indonesia): active viscous lava flow, explosions, rockfalls, pyroclastic flows (updated 9 Mar 2015)
Stromboli (Eolian Islands, Italy): weak strombolian activity at summit vents (updated 16 Apr 2015)
Suwanose-jima (Ryukyu Islands): strombolian activity (updated 3 Aug 2015)
Telica (Nicaragua): sporadic ash emissions and explosions (updated 28 May 2015)
Tungurahua (Ecuador): volcanic unrest, ash emissions, degassing (updated 5 Jul 2015)
Ubinas (Peru): intermittent ash emissions (updated 28 Jun 2015)
Villarrica (Central Chile): small lava lake in summit crater (updated 12 May 2015)
Wolf (Galápagos Islands, Ecuador): large explosive-effusive eruption since 25 May 2015 (updated 25 May 2015)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)

Eruption warning / minor activity:

Asama (Honshu): occasional small explosions since 16 June 2015 (updated 22 Jun 2015)
Augustine (Cook Inlet (SW Alaska))
Barren Island (Indian Ocean): weak thermal hot spot (updated 19 Aug 2015)
Bezymianny (Central Kamchatka Depression): steaming, weak seismic activity (updated 3 Jul 2014)
Bulusan (Luzon Island, Philippines): occasional phreatic explosions (updated 16 Jun 2015)
Chirinkotan (Northern Kuriles): sporadic ash emissions (updated 28 Jul 2015)
Cleveland (Aleutian Islands, Alaska): intermittent explosions (updated 12 Aug 2015)
Etna (Sicily, Italy): sporadic weak ash emissions from New SE crater (updated 19 Apr 2014)
Gamalama (Halmahera): new eruption on 18 Dec 2014 (updated 16 Jul 2015)
Heard (Australia, Southern Indian Ocean): possibly lava lake in summit crater (updated 5 Dec 2014)
Kavachi (Solomon Islands): no eruption since 2007 (updated 16 Jun 2014)
Kerinci (Sumatra): seismic unrest, steam emissions (updated 5 Jun 2013)
Kick 'em Jenny (West Indies, Grenada): volcanic unrest, eruption warning (updated 24 Jul 2015)
Krakatau (Sunda Strait, Indonesia): steaming, seismic unrest (updated 31 Mar 2014)
Kuchinoerabu-jima (Ryukyu Islands): large explosive eruption on 29 May 2015 (updated 27 Mar 2015)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 22 May 2015)
Lopevi (Vanuatu): eruption warning (updated 16 Dec 2014)
Mayon (Luzon Island): steaming (updated 18 Dec 2014)
Merapi (Central Java, Indonesia): sporadic phreatic explosions (updated 21 Aug 2015)
Nevado del Ruiz (Colombia): sporadic ash emissions (updated 8 Aug 2015)
Nyamuragira (DRCongo): active lava lake (updated 29 Nov 2014)
Ontake-san (Honshu): steaming, low seismic activity (updated 18 Dec 2014)
Papandayan (West Java): steaming (updated 6 May 2013)
Pavlof (Alaska Peninsula, USA): steaming, elevated seismic activity (updated 22 Dec 2014)
Rasshua (Central Kuriles)
Raung (East Java): intra-caldera eruption with lava flow and strombolian activity (updated 18 Aug 2015)
Rincón de la Vieja (Costa Rica): phreatic explosions from crater lake (updated 21 Sep 2014)
Sabancaya (Peru): steaming, elevated seismic activity (updated 8 Aug 2015)
Sacabaya (Northern Chile, Bolivia and Argentina)
San Cristobal (Nicaragua): possible ash emission on 11 April (updated 9 Mar 2015)
San Miguel (El Salvador): degassing, seismic unrest, sporadic ash emissions (updated 28 Jan 2015)
Shishaldin (United States, Aleutian Islands): mild explosive activity, intermittent more intense phases (updated 3 Apr 2015)
Sirung (Pantar Island, Indonesia ): degassing (updated 10 Jul 2015)
Slamet (Central Java): steam emissions (updated 12 Jan 2015)
Turrialba (Costa Rica): ash emissions, weak strombolian activity (updated 18 Aug 2015)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)
Zhupanovsky (Kamchatka, Russia): intermittent ash emissions (updated 22 Jun 2015)

Vorherige Nachrichten
Inferometry map of Sakurajima showing large deformation (inflation) of the summit area
Mittwoch, Aug 19, 2015
Sakurajima (Kyushu, Japan): The most recent radar measurements done by ALOS-2 satellite of the Japan Aerospace Exploration Agency (JAXA) show that the summit of the volcano has inflated by the enormous amount of approx. 16 cm during the interval 4 Jan - 17 August this year. ... [mehr]
Thermal signal from Karangetang volcano (MIROVA)
Dienstag, Aug 18, 2015
Karymsky (Kamchatka): The volcano had an explosion this morning that produced an ash plume that rose to 15,000 ft and drifted SE. ... [mehr]

Montag, Aug 17, 2015
Raung (East Java): With a small group we climbed Raung during 14-15 August 2015. We might have witnessed the end of the large 2015 summit eruption, which during June-early August produced large lava flows, lava fountains and significant ash plumes. ... [mehr]
Seismic signal of Sakurajima's SKRB station on 15 Aug (V-NET)
Sonntag, Aug 16, 2015
Sakurajima (Kyushu, Japan): Japanese volcanologist monitoring the volcano warned that a larger eruption could occur in the near future. The alert level of the volcano was raised to the second highest, 4 out of 5, meaning that preparations for evacuations of nearby areas (within a few km from the Showa crater) are in progress. ... [mehr]
Webcam view of Cleveland volcano 11 Aug
Mittwoch, Aug 12, 2015
Raung (East Java): (12 Aug) Small ash emissions continue. This morning, a plume of ash approx. 500 m high drifted 15 km to the west of the volcano. ... [mehr]

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