Volcanic activity worldwide 31 Dec 2013: Cleveland, Sinabung, San Miguel, Dukono, Suwanose-jima, Etn...
Tuesday Dec 31, 2013 17:03 PM |
Strombolian explosions at the New SE crater on the evening of 29 Dec (Photo: Emaunela / VolcanoDiscovery Italia)Tremor amplitude (
Strong activity at Suwanose-jima volcano (JMA webcam)
Medium sized pyroclastic flow reaching the lower slopes of Sinabung today (Image: Sutopo Purwo Nugroho/BNPB)
Etna (Sicily, Italy): The fireworks on Etna seem to be coming to an end, although there is currently no visibility due to bad weather. Tremor has gradually decreased after another long, but rather weak paroxysm at the New SE crater (photos).
Eruption plume from today's explosion at San Miguel (photo: La Prensa Grafica)
El Hierro (Canary Islands, Spain): It seems more and more likely that the crisis is appraching an end (with the likelihood of a new eruption soon becoming less and less). Seismic activity has decreased to normal levels with no unusual signs over the past 24 hours. Deformation has been stagnating or mostly reverted to deflation at most stations.
Suwanose-jima (Tokara Islands, Japan): The volcano continues to produce frequent and intense strombolian explosions and produces a low level ash plume.
Sinabung (Sumatra, Indonesia): More and increasingly larger (and hence more dangerous) pyroclastic flows are being formed by the growing lava dome of the volcano. These "flows" are hot turbulent avalanches of hot blocks and ash in suspension with hot gas and air, that can travel down at great speed the slopes of the mountain, typically following the paths of valleys.
Today, one of the pyroclastic flows reached a distance of 3000 m, ie. the lower slopes. It needs to be pointed out that anything living in the path of these flows is killed, and even larger structures usually destroyed or completely burned. The exclusion zone of 5 km currently in place seems clearly to be too small.
... [read more]
Dukono (Halmahera): Elevated explosive activity continues at the remote volcano. Ash plumes up to 12,000 ft (3.6 km) altitude were spotted on satellite data by VAAC Darwin.
Cleveland (Aleutian Islands, Alaska): Small, brief explosions were detected at the volcano yesterday evening (21:29 UTC or 12:29 AKST) and this morning at 4:06 UTC (19:06 AKST local time), USGS reported.
"No satellite images available after the time of the explosion, so uncertain if minor ash cloud generated, but unlikely.
"Similar such explosions may continue without warning, and may produce minor ash clouds that are not expected to extend much beyond the volcano, but could produce local fallout on the flanks of the volcano. AVO has received no reports of activity from local observers." (AVO/USGS)
San Miguel (El Salvador): (31 Dec) The new eruption that occurred at the volcano Sunday (29 Dec) morning at 10:50 am local time has so far been an isolated single explosion of vulcanian type (accumulated pressure ejecting the plug in the conduit). Current seismic activity is low, but more activity could follow.
The explosion produced an ash plume of considerable (3-8 km) height, reaching estimated altitudes of 5-10 km. Heavy ash fall followed the eruption in nearby areas downwind, such as in the towns of Chinameca and San Jorge to the west. Civil Protection immediately began to evacuate families residing in a radius of 3 km around the volcano. So far, more than 5000 persons have been ordered to evacuate.
... [read more]
Monday, Dec 30, 2013
Etna (Sicily, Italy): The 21st paroxysm at the New SE crater which started last evening is still going on although it has decreased a bit. Until now, the eruption has been rather weak with no sustained tall lava fountains as during most of the paroxysms. Instead, the New SE crater continues to produce loud, spectacular near-continuous strombolian-type jets (or low, pulsating fountains) and explosions of lava bubbles. The eruption so far: ... [meer...]
Sunday, Dec 29, 2013
Saturday, Dec 28, 2013
Volcanic activity worldwide 27 Dec 2013: Sinabung, Kizimen, Nishino-shima, Karymsky, Dukono, Paluweh...
Friday, Dec 27, 2013
Thursday, Dec 26, 2013