Volcanic activity worldwide 14 May 2013: Santa María / Santiaguito, Pacaya, Fuego, Popocatépetl, R...
Tuesday May 14, 2013 15:53 PM |
MODIS hot spot data (past 2 days) for Pavlov volcano (ModVolc, Univ. Hawaii)
Current seismic recording from Popocatépetl
Sakurajima (Kyushu, Japan): Explosive activity has picked up again at the volcano. Today alone, several explosions have occurred, two of which of moderately large size with ash plumes reaching 10,000 and 12,000 ft (3 and 3.7 km) altitude. (VAAC Tokyo)
Ground deformation (deflation) at Sabancaya volcano measured by InSAR (IGP)
Pavlov (Alaska Peninsula, USA): Seismic activity has decreased today, but remains elevated. MODIS data confirm a hot spot at the summit, which could suggest a small lava flow there.
A new eruption has probably started. AVO raised the alert level to orange, following an increase in seismic activity this morning along with the presence of an intense thermal anomaly at the summit observed in latest satellite imagery.
Similar patterns of seismicity and elevated surface temperatures have previously signalled the onset of eruptive activity at Pavlof. Although not yet visually confirmed, a low-level eruption of lava has likely begun from a summit vent. No ash clouds have been detected.
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Popocatépetl (Central Mexico): Activity has been lower today with lesser earthquakes and intermittent emissions.
Santa María / Santiaguito (Guatemala): Activity has been generally low recently, with infrequent small explosions and occasional small avalanches produced from the weakly active lava flows on the dome's flanks.
Pacaya (Guatemala): Activity seems to have decreased. INSIVUMEH no longer reports and strombolian activity visible or audible.
Fuego (Guatemala): Activity has remained stable and at relatively low levels over the past days. The volcano has few weak to moderate strombolian-type explosions every now and then (5-10 per day), which produce small ash plumes rising up to 5-700 m above the crater.
Reventador (Ecuador): IG reported continued moderate activity with occasional (mostly unobserved) small explosions.
Tungurahua (Ecuador): IGPEN reports ongoing strombolian activity with lava ejected to 200 m above the crater, continuing emissions of steam and ash and occasional strong explosions with roaring sounds that produce ash columns up to 3 km high. Ashfall was reported overnight 12-13 May in the sector of Manzano.
Sabancaya (Peru): The possible ash emissions on 9 May have not been confirmed, but unrest in the form of increased earthquake activity and ground deformation has increased since early May, the Geophysical Institute of Peru (IGP) reported in its press release on 10 May.
So-called "hybrid" earthquakes (related to both the fracturing of rock and fluid movements) have increased since 2 May, while purely volcanic-tectonic quakes have remained stable.
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Monday, May 13, 2013
Kizimen (Kamchatka): Activity continues with little changes. Video data showed that the lava dome is still active and produces incandescence and hot avalanches on the western and eastern flanks. Strong and moderate gas-steam activity accompany this process. Satellite data showed a thermal anomaly over the volcano. (KVERT) ... [meer...]
Sunday, May 12, 2013
Popocatépetl (Central Mexico): The activity continued to increase over the past days and CENAPRED raised the alert level to Yellow Phase 3 this morning. The volcano has been producing frequent sequences of continuous steam and ash emissions as well as discrete vulcanian-type explosions that throw glowing bombs to several hundred meters distance from the crater and create ash plumes up to about 2 km high. ... [meer...]
Friday, May 10, 2013
Wednesday, May 08, 2013
Popocatépetl (Central Mexico): A significant increase in activity occurred at the volcano. Starting at 19:28 h local time yesterday, volcanic tremor of high amplitude has been recorded for 3.5 hours and accompanied by strong steam and ash emissions creating an eruption column rising 3 km. Explosions ejected incandescent fragments to distances of 700 m from the crater. ... [meer...]