El Hierro volcano (Canary Islands, Spain): end of the submarine eruption in sight?
Monday Dec 19, 2011 16:25 PM |
The ongoing weak volcanic tremor as recorded by IGN on 19 Dec
The submarine eruption south of El Hierro is still going on, but there are signs magma supply has dropped significantly. Most likely, the eruption which now has lasted over 2 months is approaching its end.
Graph published by INVOLCAN showing the drop in CO2 emission levels
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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Links / Sources:
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