As time goes by we understand more and more about the activity under El Hierro. The Canarian Hotspot has several plumeheads reaching up under the volcanically active islands in the Island chain. It seems that for unknown reasons the activity has changed at depth so that El Hierro has become far more active than previously.…
I have for quite some time had an issue with the Mogi-model as soon as it is used outside of a central volcano. At a central volcano it makes sense to use a point sourced half sphere as a model for predicting amount of magma intruding into the system from given GPS-coordinates. If only the…
As Christmas moves towards Boxing Day it looks more and more as the volcano of Tanganasoga on the island of El Hierro in the Spanish Canary Islands is closing in on a new eruption. Since the last eruption the seismic activity has continued in a subdued fashion, but not in a way that really was…
Some parts (?) of El Hierro experienced a short power outage last night, This was also viewable on the solitary working webcam at the moment which was noticed by some regulars. Quite some earthquakes Mag. 3+ and even some Mag 4+ have been recorded. chryphia created a new plot which shows the action going on:…
Hypothesis: the earthquake swarms report relaxation of accumulated, compressive tectonic stresses Tectonic forces The crust under the Canaries, part of the African tectonic plate, is moving north eastwards at 24mm annually in response to drag from the upper mantle. The crust/upper mantle boundary under Hierro plunges to at least 30km deep below the island .…
VolcanoCafé 
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