Volcanic activity worldwide 13 Apr 2013: Popocatépetl, Galeras, Ruapehu, Nevado del Ruiz, Etna
Saturday Apr 13, 2013 17:04 PM |
Webcam image of the New SE crataer with the suspected new vent (bluish degassing) at its base
Current webcam image of Popocatépetl seen from the south (CENAPRED)
Ash emission from Galeras on 11 March 2013 (INGEOMINAS)
Etna (Sicily, Italy): Following yesterday's paroxysm, it seems that a new effusive vent has opened at the SE base of the New SE crater.
Steam plume rising from Ruiz yesterday (INGEOMINAS)
Ruapehu (North Island): GNS reported that "the temperature of Crater Lake has started to rise and has now reached 30°C. It has been accompanied by some minor volcanic tremor. The chemistry data from our last sampling trip confirms the decline of temperature in the deep geothermal system.
Volcanologist Brad Scott said these data indicate the Crater Lake is returning to a more typical state, where heat and gas flow from depth is entering the lake. The anomaly of higher heat at depth and cooler temperatures in the lake appears to have passed. However the volcano remains in unrest and eruptions could still occur with no warning."
Popocatépetl (Central Mexico): A phase of stronger, continuous emissions has started short time ago, accompanied by strong tremor. Over the past days, the volcano had been relatively calm, with 1-2 weak gas-steam-ash explosions per hour.
Galeras (Colombia): Small ash explosions continue to occur almost each day.
Nevado del Ruiz (Colombia): A (probably shallow) seismic swarm is in progress at the volcano. As INGEOMINAS mentioned in its latest report yesterday, a weak continuous tremor signal continues to be recorded, associated with elevated steaming and light ash venting, creating a plume rising about 1600 m above the volcano.
Friday, Apr 12, 2013
Stromboli (Eolian Islands, Italy): Activity remains elevated. Lava continues to overspill from the lips of the NE crater, showing that the magma column stands high inside the conduit. Frequent strombolian explosions are reaching heights of 2-300 m and the tremor signal is strong again today. ... [more]
Thursday, Apr 11, 2013
Stromboli (Eolian Islands, Italy): Yesterday evening's lava flow has once again beeen very short-lived. Activity (effusion rate) sharply dropped late in the evening and today, only very small amounts of lava are still overspilling from the NE crater rim. Tremor and rockfall signals are much weaker as well. ... [more]
Wednesday, Apr 10, 2013
Tuesday, Apr 09, 2013
Volcanic activity worldwide 8 Apr 2013: Stromboli, Santa María / Santiaguito, Pacaya, Fuego, Colima...
Monday, Apr 08, 2013
Stromboli (Eolian Islands, Italy): No significant changes have occurred recently. The seismic signal shows medium tremor levels with phases of medium to high values, and there are frequent (about 10 per hour), sometimes quite powerful strombolian explosions from the various active vents. Small amounts of lava sometimes overspill from the NE vent. ... [more]