El Hierro volcano (Canary Islands, Spain): end of the submarine eruption in sight?
Monday Dec 19, 2011 17:25 PM |
Volcanic tremor has decreased a lot, and there are almost no more bursts related to steam explosions at the underwater vent. Diffuse CO2 emissions (CO2 being interpreted as indication of fresh magma supply) has decreased, too. Earthquakes which are often related when new magma intrusions create new paths in the substrata, have almost stopped as well. The water discoloration south of La Restinga is still present and weak upwelling of muddy water is still being observed, but much less than previously, and with less intensity.
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Tuesday, Dec 13, 2011
While the previously frequent earthquakes have almost disappeared, the submarine eruption near La Restinga has gained momentum again over the past days, rising chances that it still could break the surface. ... [more]
Saturday, Dec 03, 2011
The submarine eruption south of El Hierro has calmed down since last weekend, when still steaming hot lava blocks rose to the surface above the submarine vent about 1 km off La Restinga. Not much has been seen since then, except a light and sometimes muddy stain caused by upwelling water containing volcanic gasses and particles. ... [more]
Sunday, Nov 27, 2011
[update 27 Nov] ... [more]
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. ... [more]