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El Hierro vulkaan
schildvulkaan 1500 m
Canary Islands (Spain), 27.63°N / -17.99°W
Current status: normal or dormant (1 out of 5)
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El Hierro vulkaanuitbarstingen:
2012 (?) (probable second submarine eruption in June-July west of the island), 2011-12 (Oct-Mar, submarine eruption near La Restinga), 1793
Typical eruption style:
vooral uitbundig, basaltisch spleet erupties
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El Hierro volcano (Canary Islands) news & activity updates

El Hierro volcano (Canary Islands, Spain), submarine eruption update: steaming lava blocks float to surface

Sunday Nov 27, 2011 09:01 AM |

Floating steaming lava blocks
Floating steaming lava blocks
Steaming lava blocks on 27 Nov photographed from the air by Guardia Civil / INVOLCAN
Steaming lava blocks on 27 Nov photographed from the air by Guardia Civil / INVOLCAN
View over the Las Calmas sea with the area of the submarine vent where steaming lava blocks were seen reaching the surface and floating for a few seconds
View over the Las Calmas sea with the area of the submarine vent where steaming lava blocks were seen reaching the surface and floating for a few seconds
Floating steaming lava blocks
Floating steaming lava blocks
The floating lava blocks and the stained water area to the right
[update 27 Nov]
Nu (ochtend van 27 Nov, ons vertrek), de webcam toont duidelijk aan dat dampende lava blokken blijven bereiken van het oppervlak. De uitbarsting zou kunnen worden een nieuwe fase.

Voor de eerste keer in ongeveer 2 weken, kunnen we zien stomen zwarte lava blokken die voorkomen op de oppervlakte van de zee boven de onderzeese vent ca. 1 km voor de Zuid-kust in de buurt van La Restinga vandaag (26 november) - een duidelijk teken dat de onderzeese uitbarsting is nog gaande.
De activiteit leek te hebben een piek in de middag tussen 3 en 5 pm, wanneer tientallen zwevende blokken zagen "dansen" en stomen in de relatief kalme wateren, verspreid over een oppervlakte van ca. 100 m lengte.
Een overeenkomstige groenige vlek en afgevlakte verkleurd, modderige oppervlaktewater (maar geen schuim) was zichtbaar 100-200 m verder naar het westen, in de stroomafwaarts richting van de huidige zee. Deze kloof is te verklaren door het feit dat de blokken, ingekapseld in een zeepbel self-generated stoom, veel sneller stijgen van de onderzeeër vent (op ca. 200 m diepte) dan het verwarmde water die mixen met vulkanische gassen en fijne deeltjes veroorzaakt de vlek.
Harmonische trilling is constant en op gematigde niveaus, maar de seismische activiteit in het gebied El Golfo is afgenomen in de afgelopen dagen.
Vorig nieuws
The active area seen from the South coast.
Thursday, Nov 24, 2011
The area of upwelling water above the new submarine vent(s) ca. 1 km off the south coast near La Restinga has increased. Muddy water and sometimes foam are visible at the spot, forming larger and smaller circular areas surrounded by greenish water drifting west. The activity occurs in irregular intervals of typically 20-40 minutes. ... [meer...]

Monday, Nov 21, 2011
Today, a new spot of upwelling water appeared at ca. 1 km distance off the south coast near La Restinga, near the location of the first submarine vent. Water discoloration, foam on the surface and flattened sea water were clearly visible in this area (see attached photos). We interpret that a new submarine vent is active there. ... [meer...]
Monday, Nov 21, 2011
Tremor has decreased slightly, but earthquakes continue. No visible activity was present near La Restinga yesterday, but signs increase that something could be going on in the northern sector at depth, where part of the tremor has now been localized. Also, slight inflation is measured for the El Golfo valley. ... [meer...]
Increasing volcanic tremor (19 Nov), image courtesy IGN
Saturday, Nov 19, 2011
During our observations from near the south coast at La Restinga yesterday, we could not observe any activity at the surface of the water. This corresponded well with a sharp decrease in tremor measured by the Instituto Geográfico Nacional (IGN). ... [meer...]
A brown spot is visible above the submarine vent.
Thursday, Nov 17, 2011
The volcanic tremor measured at El Hierro remains at very high levels and in sharp contrast to visible activity, feeding speculations and fear about new volcanic vents opening up somewhere on or near the island. Some fear such a new vent could be located in the El Golfo Bay, near Frontera, since most of the (deep) earthquakes in recent days are concentrated beneath the northern sector of the island. However, so far, these earthquakes are very deep (ca. 20 km) and do not point towards an immediate eruption in this area, rather are intrusions of dykes in the upper mantle beneath the island. ... [meer...]

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