San Cristobal, Nicaragua

According to a news article, seismic activity from San Cristóbal increased on 14 and 17 November. The article also noted that INETER reported explosions and subsequent ash-and-gas emissions from the crater on 21 November. Ashfall was reported in areas to the S.
Source: Agence France-Presse – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and [...]

Reventador, Ecuador

Inclement weather prevented observations of Reventador during 19-23 November. A seismic station situated on the NE flank of the central cone recorded a high number of rockfall signals that presumably originated from the active lava-flow fronts.
Sources: Instituto Geofísico-Escuela Politécnica Nacional (IG), Washington Volcanic Ash Advisory Center (VAAC), Associated Press – “Reports provided courtesy of the [...]

Nevado Del Huila, Colombia

INGEOMINAS reported an eruption of Nevado del Huila at 2145 on 20 November that destroyed part of a new lava dome that had formed during the previous months. The Alert Level was raised to Red (on a 4-color scale where Red is the highest level). According to the Washington VAAC, two gas-and-ash plumes rose to [...]

Manam, Papua New Guinea

Based on analysis of satellite imagery, the Darwin VAAC reported that on 20 November an ash plume from Manam rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted about 55 km NW.
Source: Darwin Volcanic Ash Advisory Centre (VAAC) – “Report provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological [...]

Kliuchevskoi, Kamchatka, Russia

KVERT reported that seismic activity at Kliuchevskoi was above background levels during 14-21 November and Strombolian activity continued. Video and visual observations showed that during 13-17 November gas-and-steam plumes containing a small amount of ash rose to an altitude of 5.3 km (17,400 ft) a.s.l. On 17 November, “bursting” sounds from the volcano were heard [...]

Dukono, Halmahera, Indonesia

Based on analysis of satellite imagery, the Darwin VAAC reported that on 20 November an ash plume from Dukono rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 110 km NW.
Source: Darwin Volcanic Ash Advisory Centre (VAAC) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s [...]

Dalaffilla, Ethiopia

During 19-24 November, the MODIS satellite continued to detect thermal anomalies over the area near Dalaffilla and Alu volcanoes from the eruption that began on 3 November.
Source: Hawai’i Institute of Geophysics and Planetology (HIGP) Moderate Resolution Imaging Spectroradiometer (MODIS) Thermal Alert System – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US [...]

Mount Etna on the BBC!

Martin Redfern, and the BBC Radio Science Unit, have just produced a terrific half-hour radio program about long-term monitoring on Etna!!

 
 

You can listen to the show online as a podcast at http://www.bbc.co.uk/radio4/science/thematerialworld.shtml
After a week, the url will become http://www.bbc.co.uk/radio4/science/thematerialworld_20081120.shtml as the next week’s show replaces it on the front page.
You can also [...]

Tungurahua, Ecuador

The IG reported little observed activity from Tungurahua during 5-11 November. Light ashfall was reported in Pillate (8 km W) and part of Riobamba (about 30 km S) on 4 November. Fumarolic activity was weak on 7 November and present on the NW edge of the crater on 8 November.
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG) [...]

Suwanose-Jima, Ryukyu Islands, Japan

Based on pilot observations and analysis of satellite imagery, the Tokyo VAAC reported that on 5 November an ash plume from Suwanose-jima rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted NE. The JMA indicated that during 7-8 November explosion or eruption plumes rose to altitudes of 1.2-1.8 km (4,000-6,000 ft) a.s.l. [...]