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Volcanic activity worldwide 2 May 2013: Stromboli, Fuego, Popocatépetl, Dukono, Reventador, Tungura...

Thursday May 02, 2013 12:33 PM |

Thermal webcam image of the crater area of Stromboli (INGV)
Thermal webcam image of the crater area of Stromboli (INGV)
Tremor signal (ESLN station, INGV)
Tremor signal (ESLN station, INGV)
SO2 plume from Bagana today (NOAA)
SO2 plume from Bagana today (NOAA)
SO2 plume from Dukono (NOAA)
SO2 plume from Dukono (NOAA)
SO2 from Ambrym today (NOAA)
SO2 from Ambrym today (NOAA)
Seismic signal from Ruiz this morning (OLL station, INGEOMINAS)
Seismic signal from Ruiz this morning (OLL station, INGEOMINAS)
This morning's seismic signal from Tungurahua (RETU station, IG)
This morning's seismic signal from Tungurahua (RETU station, IG)
NASA Earth Observatory image of Hear Island on 20 April 2013 by Jesse Allen and Robert Simmon
NASA Earth Observatory image of Hear Island on 20 April 2013 by Jesse Allen and Robert Simmon
Stromboli (Eolian Islands, Italy): Lava continues to intermittently flow over and out of vents at the rim and the base of the NE crater. Yesterday, the active flow front had reached about half way down the Sciara, local guides reported.
Today, tremor has decreased again a bit, but overflows remain active at least in the upper parts of the slope. Relatively large explosions and near-constant rockfalls on the Sciara continue during the whole time.

Etna (Sicily, Italy): After 3 days of quiet, strombolian activity has resumed at the New SE crater yesterday. This has been accompanied by a rise of the tremor signal. Most likely, Etna is preparing again for yet another paroxysm in the near future.

Bagana (Bougainville Island, Papua New Guinea): Heightened activity continues at Bagana. The latest NOAA satellite data reveal a significant plume of SO2 from the volcano.

Dukono (Halmahera): An unusually large SO2 plume from Dukono suggests the volcano, in semi-permanent strombolian-type eruption for many years, is currently in a phase of elevated activity.

Ambrym (Vanuatu): A SO2 plume is howering over Ambrym island, suggesting that the lava lakes continue to be active. Our next group going there next week will hopefully be able to confirm this by direct observation.

Popocatépetl (Central Mexico): Activity has remained low, with only about 1 weak emission of mainly steam per hour. Glow at the summit continues to be seen at night.

Fuego (Guatemala): Activity has decreased - the lava flows stopped being alimented yesterday and the explosive activity has become weaker. Different from previous eruptive phases, this time, it did not culminate in a paroxysmal eruption.

Galeras (Colombia): Activity (seismic and at the surface) has recently calmed down at the volcano.

Nevado del Ruiz (Colombia): More earthquakes have occurred at shallow depth beneath the volcano, including a magnitude 2.6 quake yesterday noon (local time) at 5 km NE beneath the Arenas crater, as well as some larger events later at night (no updates from Manizales observatory yet, though). The seismic swarm continues.

Cumbal (Colombia): Pasto observatory reported an increase in seismic activity during the past week, with many small volcanic-tectonic quakes u to magnitudes of 2.6 at varying depths of up to 20 km underneath of La Plazuela crater on the northern sector of the volcanic complex.

Reventador (Ecuador): Last night, emissions of steam and some ash produced a column rising bout 1 km above the crater.

Tungurahua (Ecuador): Activity remains at moderate levels. Steam andash emissions produce plumes rising about 2 km from the crater, and occasional stronger explosions with cannon-shot noises can be heard (rarely seen) ejecting blocks that fall onto the outer upper slopes and tumble downhill.
Continuous volcanic tremor can be seen on the seismic recordings.

Heard (Australia, Southern Indian Ocean): Effusive eruptive activity at the remote volcano continues. A recent satellite picture shows a new lava flow on the SW flank of Mawson Peak. A MODIS hot spot is visible as well.
Starting in October 2012, satellites measured subtle signals that suggested volcanic activity on remote Heard Island. The recent satellite images (NASA Earth Observatory) have now provided proof of an eruption otherwise likely undetected.
... [read more]
Vorig nieuws
Lava overflow on the Sciara del Fuoco (INGV thermal webcam)
Wednesday, May 01, 2013
Stromboli (Eolian Islands, Italy): After decreasing a bit yesterday, the overflow of lava from the NE vents has gained in strength this morning again, accompanied by constant rockfalls, relatively strong explosions and higher tremor. ... [meer...]
GPS-measured deformation of HEKR station (Univ. Iceland), north of the volcano
Tuesday, Apr 30, 2013
Hekla (Iceland): The famous Icelandic volcano is showing further signs that indicate an eruption could occur in a near future. Significant rapid inflation, concentrated in the northern part of the volcano, has been detected since early April and likely represents accumulation of rising magma underneath. ... [meer...]
New lava overflow on the Sciara del Fuoco (INGV thermal webcam)
Monday, Apr 29, 2013
Stromboli (Eolian Islands, Italy): Spattering and lava effusion have increased from the NE hornito, feeding a new relatively large sustained lava flow on the Sciara del Fuoco. ... [meer...]
Lava fountains from the New SE crater (Etna Trekking webcam)
Sunday, Apr 28, 2013
Etna (Sicily, Italy): (27 Apr) The 13th New SE crater paroxysm is occurring this evening. Tall lava fountains rise from the central vent of the cone, and a lava flow has rapidly descended the slope into Valle del Bove. A dense tephra plume is rising several kilometers above the volcano and drifting to the NE where ash- and lapilli fall is occurring. ... [meer...]
Thermal webcam image of the crater area of Stromboli (INGV)
Saturday, Apr 27, 2013
Stromboli (Eolian Islands, Italy): An increase in activity occurred yesterday. Lava started to effuse from one or two vents at the base of and on the outer flank below the NE hornito. It is currently extending on the upper part of the Sciara and produces strong rockfalls that reach the sea. ... [meer...]

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