The triangular island of El Hierro is the SW-most and least studied of the Canary Islands.
Following intense earthquake swarms since July 2011, a new submarine eruption started in Oct 2011 at a vent ca. 1 km south of La Restinga off the southern tip of the island. The eruption, which could even start to build a new island, is ongoing at the time of updating. Follow the El Hierro news page for the latest events.
shield volcano 1500 m
Canary Islands, Spain, 27.63°N / -17.99°W
Current seismic signal at CRST station in La Restinga (IGN)
What looks like a new swarm of earthquakes accompanied by strong harmonic tremor appeared on the southernmost seismic station at La Restinga. If it is not due to some local, human-induced work or malfunction, it suggests that the quakes are very shallow, since they don't appear on the signals of other stations. ...more
Whatever is happening there will probably become clearer soon. The latest earthquake swarm in the NE part of the island had more or less stopped during the past 24 hours. Some GPS stations showed 2-4 cm uplift during the weekend, which supports the idea of a new deep magma intrusion.
Current seismic spectrum and tremor amplitude (CRST station)
Depth vs time of earthquakes at El Hierro volcano during the past 30 days
Location of earthquakes under El Hierro since yesterday
A new swarm of earthquakes started yesterday. So far, almost 200 tiny quakes (none above magnitude 3 so far) have occurred in a broad N-S oriented area beneath the NE part of the island at around 18 km depth. ...more
A possible explanation includes a new magmatic intrusion at depth (magma accumulating at the lower crust-mantle boundary). [less]
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