El Hierro Has Largest Earthquake Since Eruption of Volcanic Opening and Prepares Others
November 2, 2011
The National Geographic Institute and supports the possibility of an eruption north of the island, opposite the town of Frontera. Defense has sent reinforcements to the Emergency Military Unit.
El Hierro is back to shake at 8.54 am (7.54 on the island), has confirmed the National Geographic Institute. This is an earthquake of magnitude 4 , recorded at the northwest border and located in the sea to 20 miles deep, on the other side of the underwater volcanic eruption. This earthquake, which was felt by the population, is the largest recorded on the island after the start of the eruption in La Restinga.
The Steering Committee of Civil Protection Plan for Volcanic Risk (Pevolca) met on Monday in El Hierro, confirmed a seismic shift in the north of the island that is being evaluated to determine whether or not there is a possibility of an eruption at that area. In this sense, the working group of the Scientific Committee has referred to a seismicity occurs at 20-26 km depth, associated with a possible feedback mechanism magmatic eruption process in progress. They build another scenario to 10-15 kilometers each other can be evaluated as a precursor to an eruption, reports EP.
However, caution that it is too early to forecast, since the acceleration of seismicity at that depth, shallower, it is not producing an increase in deformation. Such deformation would have to provide evidence in the coming days designed to ensure that there would be a new source of emission in the north, experts say.