Volcanic activity worldwide 17 Dec 2013: Shiveluch, Sinabung, Nishino-shima, Fuego, Etna
Tuesday Dec 17, 2013 16:37 PM |
Thermal image of the New SE crater (INGV Catania)
Current view of Etna
Glow from Sheveluch's lava dome yesterday (KVERT webcam)
The new island at Nishino-Shima with the first cone (21-25 Nov, yellow), and the two lava deltas that formed in late Nov-10 Dec (right) and the second delta (l) that formed during 10-13 Dec
Degassing from Sinabung volcano this morning (VSI webcam)
Etna (Sicily, Italy): It seems that the latest, highly unusual paroxysm can be regarded as over. Lava effusion ceased (or almost completely ceased) over night and tremor has continued to drop to again low levels.
Current seismic signal of Fuego (FG3 station, INSIVUMEH)
The activity has dropped although a small new fissure has now opened on the lower NE side of the cone, producing a small lava flow visible in the picture; whether it is the near end of the current episode or only a pause is difficult to say.
Shiveluch (Kamchatka): Several ash plumes to altitudes of 17-20,000 ft (5-6 km) have been detected by VAAC Tokyo during the past 24 hours. Webcam images are mostly obscured by clouds, but glow can be sometimes seen at the lava dome. Most likely the ash plumes were generated by partial collapse events and/or explosions, which in turn might have been associated with new pyroclastic flows.
Nishino-shima (Volcano Islands, Japan): (16 Dec) Activity continues at the new island and has apparently picked up in strength again. Lava flows have created a significant new delta of new land during the past 3 days, enlarging the island to a current width measuring approx. 400 (E-W) by 300 (N-S) meters.
The Japanese Coast Guard posted an interesting video and report that also shows that sporadic strombolian explosions from the active vent continue along with lava effusion:
Sinabung (Sumatra, Indonesia): The Indonesian Volcanological Survey (VSI) informed in its latest press release that a significant increase in seismic activity was detected during the past days.
While the volcano has been relatively calm at the surface, producing only a dilute gas plume with some ash reaching about 1 km above the crater, the increase in earthquakes suggests that new magma is currently rising and could produce new (potentially large) explosions.
... [read more]
Fuego (Guatemala): (16 Dec) Activity remains elevated but stable; the lava flow increased its length a bit to 600 m this morning, while explosions have become a bit weaker and occurred at rates of 2-3 per hour. Many of them produce shock waves that rattle windows and roofs of houses in nearby villages.
Monday, Dec 16, 2013
Sunday, Dec 15, 2013
Etna (Sicily, Italy): The 20th paroxysm at the New SE crater in 2013 began yesterday evening and ended at dawn, shortly after reaching its peak. The eruption lasted relatively long, but was relatively weak in intensity (compared to previous paroxysms). It produced only relatively low pulsating lava fountains with associated ash plumes and a small lava flow to the SE towards the Valle del Bove. ... [meer...]
Saturday, Dec 14, 2013
Friday, Dec 13, 2013
Thursday, Dec 12, 2013
Etna (Sicily, Italy): The situation has remained more or less unchanged. Etna has been quiet except intense degassing from the NE crater and a faint plume from the NSEC. There are currently no signs of the expected next paroxysm at the New SE crater and tremor has decreased overall during the past days (of course, this can change quickly). ... [meer...]