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Volcanic activity worldwide 3 Feb 2015: Santiaguito volcano, Pacaya, Fuego, Shiveluch, Bardarbunga, ...

Dienstag Feb 03, 2015 17:41 |

Thickness map of the Holuhraun lava flow field (Scientific Advisory Board)
Thickness map of the Holuhraun lava flow field (Scientific Advisory Board)
The lava flow at Fogo between Monte Beco and Monte Saia cones on 21 Jan (OVCV)
The lava flow at Fogo between Monte Beco and Monte Saia cones on 21 Jan (OVCV)
Comparison of Shiveluch's lava dome before and after the 1 Feb explosion, which left a large crater
Comparison of Shiveluch's lava dome before and after the 1 Feb explosion, which left a large crater
Small emission of steam and ash (?) at Shishaldin yesterday (AVO webcam)
Small emission of steam and ash (?) at Shishaldin yesterday (AVO webcam)
Incandescence from the active lava flow on the flank of Santiaguito's dome
Incandescence from the active lava flow on the flank of Santiaguito's dome
Number of recorded explosions and tremor amplitude at Pacaya (INSIVUMEH)
Number of recorded explosions and tremor amplitude at Pacaya (INSIVUMEH)
Ring-shaped (giant smoke ring?) eruption cloud from Fuego today
Ring-shaped (giant smoke ring?) eruption cloud from Fuego today
Bardarbunga (Central Iceland): The eruption, now going on for more than 150 days, continues with little changes. Although it has started to decrease, very slowly, in intensity, it remains impressive and magma discharge is still an impressive approx. 100 cubic meters per second.
Caldera subsidence and seismicity continue as well, but a slow decreasing trend of subsidence rate - from initially 50 cm a day to now about half of that now - is visible as well and seems to correlated with the decrease in magma effusion. Icelandic scientists think therefore that subsidence (and hence, the eruption,) might go on for another 5 to 16 months.
... [read more]

Fogo (Cape Verde): Mild intermittent explosive activity continues at the volcano accompanied by effusive activity. A new lava flow, smaller than the ones in the first weeks, but still well alimented, has been active in the Cha caldera over the past days and advanced slowly approx. 1500 m west-southwest passing between Monte Beco and Monte Saia cones.

Shiveluch (Kamchatka): The explosion on 1 Feb left a large crater on the lava dome, from where persistent incandescence can now be seen. This and occasional glowing rockfalls originating there indicate that magma continues to arrive at the dome.

Shishaldin (United States, Aleutian Islands): A small eruption was seen last night from a ship, VAAC Anchorage reports. Aviation color code remains orange.
According to the Alaska Volcano Observatory, elevated surface temperatures at the summit continue and small steam emissions are visible on clear webcam images, as well as "a wispy, low-level ash emission from the summit drifting west-southwest" on one image.
... [read more]

Santiaguito (Guatemala): Activity has remained similar to the previous months. Occasional small explosions from the dome and a continuing active lava flow on the southeast side of Caliente dome continue.

Pacaya (Guatemala): New ash emissions and explosions, up to 40 per day, have occurred last week, indicating the volcano could be heading towards a new eruptive phase of strombolian activity.
So far, the emissions were small and seem to be related to the opening of a new central crater, estimated 40-50 meters wide with unknown depth.
Elevated tremor accompanies this activity.

Fuego (Guatemala): Activity has been at the higher end of the scale recently. Strong explosions occur frequently, ejecting plumes that reach 1-1.3 km height and causing constant avalanches on the volcano's upper slopes, often causing bush fires in the vegetation below.
Shock waves rattle ceilings and windows in the villages of Panimache, La Rochelle, Morelia.
Vorherige Nachrichten
Etna seen from Paternó on the SSW flank
Sonntag, Feb 01, 2015
Etna (Sicily, Italy): The new eruptive phase continues. Dense cloud cover has prevented detailed observations, but from occasional clearings and other observations, it seems that the intense strombolian eruptions are going on from a vent between the old and New SE crater, feeding a lava flow, at least 2.5 km long onto the southwestern slope. ... [mehr]
Current tremor signal (ESLNZ station, INGV Catania)
Samstag, Jan 31, 2015
Etna (Sicily, Italy): After a few days of apparent calm, new activity resumes on Etna: Seismic tremor started to rise steeply this morning about 6:00 (local time). At the moment it is still elevated with an overall increasing tendency. ... [mehr]
Earthquakes at Bardarbunga yesterday (IMO)
Freitag, Jan 30, 2015
Bardarbunga (Central Iceland): A small earthquake swarm at 1 km below the eastern rim of the Bardarbunga caldera occurred yesterday evening at 21:22 local time, accompanied by a rise in tremor. ... [mehr]
Map of the June 27th lava flow as of 26 Jan (USGS / HVO)
Donnerstag, Jan 29, 2015
Kilauea (Hawai'i): The June 27th lava flow remains active, but its advance is slow. The leading edge is currently stalled roughly 500 meters from Highway 130 at Pahoa. Breakouts remain active a short distance upslope of the leading tip of the flow, and continue to slowly widen the flow. ... [mehr]

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