Stromboli (Eolian Islands, Italy): There are signs that the lava flow eruption could be approaching an end soon. Lava effusion rate has dropped although a weak lava flow continues to be active on the upper part of the Sciara del Fuoco.
INGV Catania reports strong degassing and that ash emissions from the summit vents have decreased.
Ibu (Halmahera, Indonesia): A viscous lava flow continues to be active on the northern flank of the volcano. The flow, similar to the one currently active at Santiaguito volcano in Guatemala, starts as an overflow from the lava dome in the crater, and forms a lobe traveling through a breach of the crater rim into a ravine extending north of the volcano.
Based on satellite data, it was about 1600-1700 m long in early September, and had been progressing at approx. 6 m per day. According to eyewitness reports, weak to moderate explosive activity accompanies the extrusion of the flow. The volcano’s current activity phase of dome-building had begun in 1998.
A team of VolcanoDiscovery will be on its way in the next weeks to observe the volcano on location. We hope to be able to present you more information then.
Dukono (Halmahera): Ash emissions continue. Darwin VAAC reported several ash plumes rising to estimated 8,000 ft (2.4 km) altitude and extending up to approx. 100 km NE.
Augustine (Cook Inlet (SW Alaska)): Strong ash emissions from the volcano were reported by a pilot shortly after midnight (UTC). The reported height of the plume was to up to 70,000 ft (21 km) altitude, which would indicate an unexpected, and sudden major explosion took place (if the observed plume was volcanic ash and not something else). Anchorage VAAC raised the Aviation Color Code to RED.
No ash could be identified on satellite imagery, and the Alaska Volcano Observatory (AVO) has not issued any comment. In a subsequent VAAC, “ash emissions have ended”, Anchorage wrote. It seems likely an unusual weather cloud had been mistaken for a volcanic plume.
Shishaldin (United States, Aleutian Islands): Low-level eruptive activity likely continues at the volcano, AVO writes: “Elevated surface temperatures were detected in satellite data from this morning. Sound waves coupling into the ground (ground-coupled air waves) from small explosions as well as small pulses of tremor are occasionally detected in seismic data.” (AVO)
Sinabung (Sumatra, Indonesia): (15 Oct) The eruption at the volcano continues. An expedition of our team is on location and observed near-continuous rockfalls and frequent pyroclastic flows caused by collapses on the lava flow reaching up to 4-5 km distance. The flows travel through two channels, on the south and to the north.
The increased phase of lava effusion and associated pyroclastic flows caused began about 2 weeks ago. VSI maintains alert level 3 (out of 4).
Seismic activity has been dominantly volcanic earthquakes and low-frequency quakes, representing magma pushing its way up to the surface, according to the volcano observatory.
Ambrym (Vanuatu): active lava lakes in several craters (updated 14 Aug 2013)
Bagana (Bougainville Island, Papua New Guinea): ash emissions, lava dome growth (updated 24 Sep 2014)
Bardarbunga (Iceland): Ongoing northward migration of seismic activity (updated 18 Sep 2014)
Barren Island (Indian Ocean): intermittent activity, likely strombolian-type and/or lava flows (updated 4 Feb 2014)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 27 Aug 2014)
Colima (Western Mexico): new lava flow on SW flank (updated 21 Sep 2014)
Copahue (Chile/Argentina): new ash emissions (updated 11 Oct 2014)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 1 Oct 2014)
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 explosions from summit crater, intermittent lava flows (updated 1 Oct 2014)
Ibu (Halmahera, Indonesia): growing lava dome, occasional ash emissions (updated 28 Jul 2014)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 4 Oct 2014)
Kilauea (Hawai’i): new lava flow from vents on NE flank of Pu’u ‘O’o (updated 13 Aug 2013)
Manam (Papua New Guinea): degassing, occasional ash venting (updated 28 Aug 2013)
Marapi (Western Sumatra, Indonesia): sporadic explosions (updated 27 Mar 2014)
Nishino-shima (Volcano Islands, Japan): growing island (updated 11 Oct 2014)
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)
Poas (Costa Rica): phreatic explosions (updated 14 Oct 2014)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): lava fountains, ash emissions from Tavurvur cone (updated 12 Sep 2014)
Reventador (Ecuador): ash emissions, explosions (updated 19 Aug 2014)
Sakurajima (Kyushu, Japan): ash venting, intermittent explosions (updated 10 Sep 2014)
Sangeang Api (Indonesia): growing lava dome & lava flow (updated 7 Jul 2014)
Santiaguito (Guatemala): generation of hot lahars (updated 1 Oct 2014)
Semeru (East Java, Indonesia): growing lava dome, lava flow, strombolian activity (updated 21 Sep 2014)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 24 Sep 2014)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 15 Oct 2014)
Slamet (Central Java): intense strombolian explosions (updated 13 Sep 2014)
Stromboli (Eolian Islands, Italy): lava flow effusion on Sciara del Fuoco, occasional strombolian explosions (updated 8 Oct 2014)
Suwanose-jima (Ryukyu Islands): strombolian activity in summit crater (updated 10 Sep 2014)
Tungurahua (Ecuador): moderate to strong strombolian explosions from central crater (updated 25 Sep 2014)
Ubinas (Peru): degassing, sporadic small explosions and ash venting (updated 11 Sep 2014)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)
Zhupanovsky (Kamchatka, Russia): intermittent ash emissions (updated 24 Sep 2014)
More at Volcano Discovery: Volcanoes Today, 17 Oct 2014: Stromboli volcano, Ibu, Augustine, Dukono, Shishaldin, Sinabung volcano