OREGON STATE UNIVERSITY

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Sabancaya (Peru) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

IGP reported that on 27 August INGEMMET reported long-period, volcano-tectonic, and hybrid earthquakes at Sabancaya. White to light gray plumes rose 100-300 m above the summit and drifted SE. On 28-29 August the Buenos Aires VAAC reported volcanic ash.

Sources: Buenos Aires Volcanic Ash Advisory Center (VAAC) ,Instituto Geológico Minero y Metalúrgico (INGEMMET)

Fuego (Guatemala) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

During 27 August-2 September, INSIVUMEH reported that weak to moderate explosions at Fuego expelled blocks up to 800 m above the rim. On most days white plumes rose 200-600 m above the crater; on 28 August it rose to 4.3 km (14,100 ft) above the crater. Ash plumes rose 4.1-4.6 km (13,500-15,100 ft) a.s.l. and drifted 10-15 km NE, E, SE, W, S, and SW. Ashfall was reported in the villages of Morelia (9 km SW), Panimaché (8 km SW), Panimaché II, Sangre de Cristo (8 km WSW), Hagia Sophia, Santa Sofia, Yepocapa, Alotenango, Antigua, and San Miguel Dueñas. On most days rumbling was heard that rattled structures near the volcano. On 30-31 August lava flowed towards Ceniza Canyon. Weak to moderate avalanches of blocks were channeled into the canyons Las Lajas (SE), Ceniza (SSW), Taniluyá (SW), Santa Teresa, and Honda.

Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)

Reventador (Ecuador) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

During 27 August-2 September IG reported moderate activity including explosions, long-period earthquakes, harmonic tremor, and tremor at Reventador. On 27 August steam emissions were observed. On most days the volcano was obscured by clouds. On 2 September instruments recorded tremor-related emissions and satellite views showed an ash plume that rose 6 km (19,700 ft) height and drifted W. On 2 September the Washington VAAC reported volcanic ash emissions.

Sources: Instituto Geofísico-Escuela Politécnica Nacional (IG) ,Washington Volcanic Ash Advisory Center (VAAC)

San Miguel (El Salvador) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

On 27 August -2 September SNET reported that seismic activity at San Miguel had decreased significantly from the previous month. Small steam-and-gas plumes did not exceed 200 m above the summit. Views on 29 August were obscured by clouds. On 1 September there was a slight increase in seismicity and gas pulses rose 400 m above the summit.

Source: Servicio Nacional de Estudios Territoriales (SNET)

Shishaldin (United States) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

AVO reported that during 27 August-2 September low-level eruptive activity continued at Shishaldin volcano. On 28 August a thermal feature was observed and on 31 August a small steam plume was seen in satellite images. During clear weather on 1 September no activity was observed. On 2 September elevated surface temperatures at the summit crater were noted from satellite data. Clouds prevented observations the other days of the week. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.

Source: US Geological Survey Alaska Volcano Observatory (AVO)

Zhupanovsky (Russia) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

KVERT reported that during 22-28 August the moderate explosive eruption continued at Zhupanovsky. On 28 August ash plumes rose to 3.5-4 km (11,500-13,100 ft) a.s.l. and drifted 80 km SW. During 25-27 August satellite data showed a thermal anomaly over the volcano, but clouds prevented observations the other days of the week. The Tokyo VAAC reported that ash plumes rose to 4.3 km (14,000 ft) a.s.l. and drifted SW.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT),Tokyo Volcanic Ash Advisory Center (VAAC)

Santa Maria (Guatemala) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

On 27 August-2 September, INSIVUMEH reported lava flowing towards Upper Nima Canyon I at Santiaguito. On most days collapses of the lava flow generated fine ash that rose 300-2800 m above the crater and drifted SW, S, and W;ash was reported at Finca San José on 28 August. Fumarolic degassing plumes rose 150 -3,000 m above the crater and drifted SW, S, and E. On 30 August lahars left deposits about 1 m thick and 30 m wide, and on 1 September were reported to occasionally overflow in some parts of the Nima 1 river.

Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)

Pacaya (Guatemala) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

INSIVUMEH reported that during 27 August-2 September white and blueish white fumarolic plumes rose 50-75 m above Mackenney Crater at Pacaya and drifted 400-500 m E, S, W and SW. On 28 August small plumes of gray ash rose 200-600 m above the crater and drifted S and SW.

Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)

Popocatepetl (Mexico) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

CENAPRED reported that during 27 August-2 September explosions were accompanied by steam-and-gas emissions with minor ash and ash plumes that rose 800-3,000 m above Popocatépetl’s crater and drifted W, SW, and WSW. On most nights incandescence was observed, increasing during times with larger emissions. On 1 September partial visibility due to cloud cover was reported. On 29 and 31 August the Washington VAAC reported discrete ash emissions. The Alert Level remained at to Yellow, Phase Two.

Sources: Centro Nacional de Prevencion de Desastres (CENAPRED),Washington Volcanic Ash Advisory Center (VAAC)

Tungurahua (Ecuador) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

During 27 August-2 September IG reported that moderate to high eruptive activity continued at Tungurahua including volcanic tremor, explosions, and long-period earthquakes. On most days explosions described as roars and “gunfire” were heard that rattled structures at the observatory and around the volcano. On most days ash plumes rose 1.5-2.5 km (4,900-8,200 ft) a.s.l. above the crater rim and drifted N, W, and NW. On 27-28 August explosions expelled blocks on the W and NW flank that descended 800-1000 m below the crater rim. On 30 August pyroclastic flows decended 1500 m down the NW flank. IG reported nearly constant explosions and pyroclastic flows on 31 August that traversed down the ravines of La Hacienda, Achupashal, and Mandur.

Ubinas (Peru) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

During 27 August-2 September INGEMMET reported that the eruption of Ubinas was continuing. During 27-31 August gas and ash plumes rose 200-1100 m above the crater and drifted E, NE, SE, and S. On 27 August INGEMMET reported increased volcanic tremor which continued until 30 August when the volcanic tremor decreased. On 28 August the Buenos Aires VAAC listed the Aviation Color Code at Red, noting intermittent light ash and possible ongoing emissions.

Sources: Buenos Aires Volcanic Ash Advisory Center (VAAC) ,Instituto Geológico Minero y Metalúrgico (INGEMMET)

Dukono (Indonesia) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 28-29 August a low level plume from Dukono rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 40 km NE and N.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)

Aira (Japan) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

During 27 August-2 September JMA reported 42 explosions from Showa Crater at Aira Caldera’s Sakurajima volcano that ejected ballistics 800-1300 m from the crater. The explosions were accompanied by volcanic earthquakes and volcanic tremor. On 30-31 August clear incandescence was visible by high-sensitivity camera at night, with a “smoke” plume rising 3 km above the crater on the 31st. The Tokyo VAAC reported explosions during 13-17 August with plumes that rose to an altitude of 1.2-4 km (4,000-13,000 ft) a.s.l. and drifted E, NE, N, and SE. The Alert Level remained at 3 (on a scale of 1-5).

Sources: Japan Meteorological Agency (JMA) ,Tokyo Volcanic Ash Advisory Center (VAAC)

Kilauea (United States) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

During 27 August-2 September HVO reported that the circulating lava lake occasionally rose and fell in the deep pit within Kilauea's Halema'uma'u Crater. Gas emissions remained elevated. The plume from the vent continued to deposit variable amounts of ash, spatter, and Pele's hair onto nearby areas; smaller particles may have been dropped several kilometers away. During 27 August-2 September glow was visible overnight above several outgassing openings in Pu`u `O`o's crater floor. On 28 August there was a brief reduction in surface activity. On 1 September aerial views showed small lava ponds within the NE, SE, and N pits within the crater, and a crusted pond surface in the SE pit. The June 27th lava flow remained active. On 1 September active lava was 12.6 km from the vent, and about 1.9 km from the eastern boundary of the Wao Kele o Puna Forest Reserve. Lava a few hundred meters behind the front had flowed into a large ground crack and disappeared from view; a line of steam from the crack extended E. The most distant steaming along the crack was 12.8 km from the vent and 1.7 km from the Forest Reserve boundary. Small breakouts were active closer to Pu`u `O`o, about midway along the length of the June 27th flow.

Source: US Geological Survey Hawaiian Volcano Observatory (HVO)

Sheveluch (Russia) - Report for 27 August-2 September 2014

GVP Eruption Reports - Thu, 09/04/2014 - 5:18am

KVERT reported that during 22-28 August lava-dome extrusion onto Shiveluch’s SE flank was accompanied by moderate ash explosions, incandescence of the dome summit, hot avalanches, and fumarolic activity. Satellite data showed a thermal anomaly over the lava dome on 24-28 August. The volcano was obscured by clouds the other days of week. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Ash on New Britain


Forests west of Mount Tavurvur got a fresh coat of ash after Rabaul volcano erupted explosively on August 29, 2014.

Spectacular photos from Iceland's latest volcanic eruption - Vox

Volcano News - Sun, 08/31/2014 - 5:40am

Forbes

Spectacular photos from Iceland's latest volcanic eruption
Vox
Iceland's Bárðarbunga volcano began erupting once again early Sunday morning — with lava flowing out of a mile-long fissure in the Holuhraun lava field. The lava fountains themselves have been spectacular, reportedly reaching up to 200 feet in the air.
Iceland Volcano Eruption: So Far, So GoodForbes
All Clear: Iceland's Bardarbunga Volcano Eruption Over, Air Travel OK'dNBCNews.com
Iceland Reopens Airspace After Volcanic EruptionWall Street Journal
The Guardian -USA TODAY
all 829 news articles »

Eruption Update for March 19, 2014: Hekla, Copahue and Cerro Negro de Mayasquer

Eruptions! - Wed, 03/19/2014 - 1:58pm
Been rather quiet on the active eruption front over the last few weeks, but that doesn’t mean there aren’t volcanoes rumblings worldwide. Iceland The media had fun with a statement by Páll Einarsson that Hekla in Iceland is “ready to erupt”. Apparently this ...

How Tall Are Eruptions on Io and Venus?

Eruptions! - Mon, 03/17/2014 - 8:42am
Earth isn't the only volcanic body in the solar system. For starters, Io, one of Jupiter's moons, has eruptions of epic proportions.

Save Our Comments

Eruptions! - Thu, 03/13/2014 - 5:14pm
UPDATE March 17: So, the update didn’t occur over the weekend. Thus, the comments are still here. I have been told that we will likely be able to import the old comments when the update occurs, but no ironclad assurances ...