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Volcanic activity worldwide 28 Dec 2013: Shiveluch, Suwanose-jima, Etna, El Hierro

Saturday Dec 28, 2013 17:03 PM |

Ash emission from Etna's NE crater this evening
Ash emission from Etna's NE crater this evening
Tremor amplitude yesterday (CTAB station, IGN)
Tremor amplitude yesterday (CTAB station, IGN)
Map of recent earthquakes; the magnitude 5.1 event this afternoon is the red dot west off the island.
Map of recent earthquakes; the magnitude 5.1 event this afternoon is the red dot west off the island.
Explosion from Shiveluch's lava dome this morning (afternoon in Kamchatka)
Explosion from Shiveluch's lava dome this morning (afternoon in Kamchatka)
Glow from Suwanose-jima volcano this evening
Glow from Suwanose-jima volcano this evening
Etna (Sicily, Italy): The volcano remains restless. Ash emissions have resumed (or continue) at the NE crater. Tremor is fluctuating, but there's a slow overall rising trend.

El Hierro (Canary Islands, Spain): The situation has been calm over night after yesterday evening's M5.1 earthquake (and a handful of aftershocks of magnitudes up to 3.6) off to the west. There are speculations that this quake might have been caused by magma rising in this area and hence, a possible precursor to an eruption west off the island, but the more likely interpretation, given by IGN's experts, is that the quake was a result of tectonic stress induced by the recent deformation of the island. Except abundant rockfalls and smaller landslides, the quake has not caused major damage or injuries, fortunately. Some local roads in the El Golfo area near steep cliffs have been closed.
On the island itself, the signs of volcanic unrest have decreased since yesterday afternoon: tremor, still present, has decreased in strength, earthquakes have been mostly absent under the central/SE part of the island, and deformation seems to be stagnating.
Whether this is a pause or sign of the near end of the current crisis is too early to say. You can check live data at:
...27 Dec:
IGN also lists the earthquake now, as a magnitude 5.1 event at 15 km depth NW off the island, i.e. on the western rift zone axis.

Shiveluch (Kamchatka): A relatively large explosive eruption occurred this afternoon at the lava dome of the volcano, producing a pyroclastic flow and an ash plume rising to over 27,000 ft (8 km) altitude (at 03:07 UTC):

Suwanose-jima (Ryukyu Islands): The volcano's activity has picked up. Today, VAAC Tokyo reported at least 3 explosions with low-level ash plumes. Bright glow from the crater area is visible at night, suggesting elevated strombolian to vulcanian-type activity. Here is a video of today's activity:

Vorig nieuws
Etna this morning (Schiena dell'Asino webcam, Etna Trekking)
Friday, Dec 27, 2013
Etna (Sicily, Italy): The volcano has remained mostly calm. Ash emissions from the NE crater decreased and tremor fluctuated at low levels over the holidays. ... [meer...]
GPS measured deformation at El Hierro (IGN)
Thursday, Dec 26, 2013
El Hierro (Canary Islands, Spain): Although earthquakes have largely ceased for the moment, the island experiences ongoing rapid inflation and harmonic tremor, both signs that an eruption could be imminent. ... [meer...]
Steaming of the NE and Bocca Nova crater (Pizzo Deneri Etna Trekking webcam)
Tuesday, Dec 24, 2013
Etna (Sicily, Italy): [Unless something major happens, the last update before the holidays: Merry Christmas to all!] ... [meer...]
Map of recent earthquakes under El Hierro (IGN)
Monday, Dec 23, 2013
Etna (Sicily, Italy): No significant changes have occurred. Ash emissions, sometimes relatively strong, continued from the NE crater and the tremor shows a very slow gradual rising trend. ... [meer...]
Ash emission from Etna's NE crater
Sunday, Dec 22, 2013
Etna (Sicily, Italy): A slight increase in ash emissions from the NE crater and tremor is visible during the past hours. This might be a precursor to more vigorous activity in the near future. ... [meer...]

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