Volcanic activity world-wide 26 Jan 2013

Source: Volcano Discovery - 1/26/13
 

Bárdarbunga (Iceland): Earthquakes at shallow depths (around 5 km) continue at reduced rate.

Kizimen (Kamchatka, Russia): The new lava flow from the summit on the north-eastern flank of the volcano continues to be active, KVERT reports. Incandescence of the volcano summit, hot avalanches, strong gas-steam activity and moderate levels of seismicity accompany this process.

Tolbachik (Kamchatka, Russia): The eruption continues with little changes. Lava flows continue to erupt from the southern fissure, accompanied by stable, relatively high levels of tremor.
Our French colleagues from activolcans received a brief eyewitness report: (translated from original)
"The activity of the active cone was always very intense. Until yesterday (25 Jan) activity was marked by vigorous strombolian explosions that sometimes merged into lava fountains of 200-250 m height.
... [read all]

Kilauea (Hawai'i): Good magma supply continues to feed the lava lakes at the summit (Halema'uma'u) and the rift zone (Pu'u O'o), and lava flows that reach the ocean in multiple locations.
Today, a small swarm of shallow quakes is occurring at the upper eastern rift zone a few km SE of the caldera.
So far, 6 quakes in the magnitude 2 range have been recorded in this area and under the caldera itself today.

Long Valley (California): Tiny quakes continue to be recorded under and near the Long Valley caldera. A small swarm is visible today in an area 20 km to the SE of Mammoth Mountain, at the SW limit of the caldera.

Popocatépetl (Central Mexico): The number of gas/steam/minor ash emissions has jumped from rates of less than 1 every 2 hours during most of the past days to about 3 per hour (65 between 24-25 Jan). CENAPRED describes them of low to medium intensity and has observed continuing incandescence at the summit.
The latest satellite data show an increased SO2 plume in correspondence with the elevated activity, and some volcanic quakes are visible at the current (now fixed?) seismogram.

Santa María / Santiaguito (Guatemala): Explosions have been becoming more frequent; the volcano observatory reports weak to moderate ones with ash plumes rising up to 900 m during the past day. Effusion of lava flows continues.

Fuego (Guatemala): During 24-25 Jan, it was not possible to observe the activity, but rumblings generated by explosions were heard. The lava flow length this morning was 800 meters, in southwestern direction.

Nevado del Huila (Colombia): An SO2 plume detected on the latest NOAA satellite data suggests a phase of elevated degassing has been taking place.

Sangay (Ecuador): A possible ash emission was reported last night (25 Jan) by Washington VAAC, but due to night time, satellite observation was not possible. A small thermal hot spot was detected at the summit, which suggests that probably weak or moderate strombolian activity has resumed in the crater.

Reventador (Ecuador): Activity continues, but likely has becoming more intermittent judging from the seismic signal. Visual observations are most of the time impossible.
In a special bulletin posted yesterday IGEPN summarizes the beginning of the new eruptive phase:
Seismicity began to increase significantly on January 22. The same day, volcanologists received the first reports of sounds of explosions and rumblings heard. On the evening of 22 Jan, new explosive activity produced an ash-rich plume rising 1500 m above the crater, and a new lava flow was detected on the southeastern flank, with its length estimated about 1500 m and the flow front at 2600 m elevation.
... [read all]

Copahue (Chile/Argentina border): The volcano remains calm at the surface, but SERNAGEOMIN reports continued high levels of seismic activity reflecting degassing and internal fluid movements.

Volcano Activity Summary for 26 Jan 2013:

Restless / uncertain activity:

Aoba (Vanuatu): steaming, degassing (updated 26 Dec 2012)
Arenal (Costa Rica): continua la fase de reposo, emisión de gases (updated 30 Dec 2012)
Askja (Central Iceland): increased seismicity (updated 14 Dec 2012)
Bárdarbunga (Iceland): earthquake swarm (updated 26 Jan 2013)
Brennisteinsfjöll (Reykjanes Peninsula, SW Iceland): earthquake swarms (updated 7 Oct 2012)
Bromo (East Java, Indonesia): seismic unrest, steaming (updated 3 Oct 2012)
Campi Flegrei (Phlegrean Fields) (Italy): sciame sismico (updated 7 Jan 2013)
Chaitén (Southern Chile and Argentina)
Changbaishan (China / North Korea border): increased seismic and degassing activity, deformation (updated 29 Sep 2012)
Cleveland (Aleutian Islands, Alaska): Alert Level for Cleveland lowered to Yellow (updated 22 Nov 2012)
Concepción (Nicaragua): seismic unrest (updated 23 Jan 2013)
Cumbal (Colombia): continuing seismic swarms (updated 23 Jan 2013)
El Hierro (Canary Islands, Spain): earthquake swarm since 31 Dec 2012 (updated 2 Jan 2013)
El Misti (Peru): earthquake swarms (updated 29 Aug 2012)
Gamkonora (Halmahera): alert level lowered to yellow (updated 14 Sep 2012)
Gaua (Vanuatu )
Hekla (Iceland): Small but very shallow 1.2 magnitude earthquake at 21:13 UTC on 15 Feb 2012 (updated 14 Sep 2012)
Ijen (East Java, Indonesia): increased steaming and seismicity, alert level raised on 24 July (updated 17 Apr 2012)
Irazu (Costa Rica)
Iwo-jima (Volcano Islands): weak degassing, occasional volcanic tremors (updated 22 Jan 2013)
Karkar (Northeast of New Guinea): possible ash eruption on 1 February (updated 5 Feb 2012)
Katla (Southern Iceland): occasional seismic swarms (updated 17 Aug 2012)
Kerinci (Sumatra)
Ketoi (Kurile Islands, Russia)
Krísuvík (Southwestern Iceland): earthquake swarms (updated 2 Sep 2012)
Kuchinoerabu-jima (Ryukyu Islands)
Kverkfjöll (Eastern Iceland): occasional small earthquake swarms (updated 21 Oct 2012)
Lamington (New Guinea): uncertain reports about ash emissions on 25 March (updated 19 Apr 2012)
Lewotobi (Flores): steaming and seismic activity decreased, alert lowered back to 1 (out of 4) (updated 5 Apr 2012)
Loihi (United States, Hawaiian Islands): Magnitude 4.2 earthquake at Loihi (updated 26 Nov 2012)
Machin (Colombia): elevated seismic activity (updated 21 Jan 2013)
Masaya (Nicaragua): elevated seismic activity (updated 23 Jan 2013)
Mauna Loa (Big Island, Hawai'i)
Mayon (Luzon Island): steaming, increased earthquakes, slight inflation (updated 11 Nov 2012)
Merapi (Central Java): Dome collapse sometime in October (updated 21 Oct 2012)
Mt Fuji (Honshu): earthquakes at the end of January and in February 2012, new craters reported, increasing fumarolic activity (updated 9 Sep 2012)
Pacaya (Guatemala): seismic unrest (updated 22 Jan 2013)
Papandayan (West Java): alert status back to 2 (updated 1 Feb 2012)
Piton de la Fournaise (La Réunion)
Reclus (Southern Chile and Argentina): increased number of earthquakes (updated 31 Aug 2012)
Rinjani (Lombok)
Ruapehu (North Island): seismic unrest (updated 24 Jan 2013)
San Cristobal (Nicaragua): seismic unrest (updated 25 Jan 2013)
San Miguel (El Salvador): seismic unrest (updated 25 Jan 2013)
San Pedro-Pellado (Central Chile and Argentina): seismic swarm (updated 8 Jun 2012)
Sangeang Api (Indonesia): occasional weak steaming (updated 3 Jan 2013)
Sinabung (Sumatra)
Siple (Marie Byrd Land, Western Antarctica): possible steaming detected on 20 June (updated 28 Jun 2012)
Sirung (Pantar Island, Indonesia ): steaming and elevated seismicity (updated 27 May 2012)
Slamet (Central Java): degassing, strong fumaroles (updated 9 Aug 2012)
Sotará (Colombia): Actividad volcán Sotará del 3 al 9 de octubre de 2012 (updated 23 Jan 2013)
Taal (Luzon, Philippines): degassing, elevated seismic activity (updated 24 Jan 2013)
Talang (Sumatra)
Telica (Nicaragua): seismic unrest (updated 15 Nov 2012)
Tiatia (Kunashir Island): weak thermal anomaly (updated 6 Sep 2012)
Tjörnes Fracture Zone (North of Iceland): continuing earthquake swarm (updated 11 Dec 2012)
Tondano (North Sulawesi & Sangihe Islands)
Tongariro (North Island, New Zealand): strong steaming from Te Maari craters, slightly elevated seismic activity (updated 22 Jan 2013)
Tungurahua (Ecuador): occasional ash explosions (updated 23 Jan 2013)