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El Hierro volcano
shield volcano 1500 m
Canary Islands (Spain), 27.63°N / -17.99°W
Current status: normal or dormant (1 out of 5)
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El Hierro volcano eruptions:
2012 (?) (probable second submarine eruption in June-July west of the island), 2011-12 (Oct-Mar, submarine eruption near La Restinga), 1793
Typical eruption style:
mainly effusive, basaltic fissure eruptions
Last earthquakes nearby
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El Hierro volcano (Canary Islands) news & activity updates

El Hierro volcano update: New earthquake swarm

Saturday Mar 15, 2014 11:05 AM | BY: T

Location of earthquakes under El Hierro since yesterday
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.
A possible explanation includes a new magmatic intrusion at depth (magma accumulating at the lower crust-mantle boundary).
Previous news

Friday, Dec 27, 2013
A large earthquake of estimated magnitude 5.4 (USGS) occurred just minutes ago. USGS places the quake at 22.8 km depth NW of El Golfo, i.e. away from the area of the recent earthquake swarm and current inflation. ... [more]
GPS measured deformation at El Hierro (IGN)
Thursday, Dec 26, 2013
Although earthquakes have largely ceased for the moment, the island experiences ongoing rapid inflation and harmonic tremor, both signs that an eruption could be imminent. ... [more]

Tuesday, Dec 24, 2013
The new seismic / deformation crisis continued over night with about 20 quakes between magnitudes 2-3 today so far (during the first 6 hours). The key obsservations are: ... [more]
Map of recent earthquakes under El Hierro (IGN)
Sunday, Dec 22, 2013
A new earthquake swarm started under the island today. The earthquakes are located at about 15 km depth under the southeastern central part of the island. IGN recorded more than 40 quakes with magnitudes up to 3.2 so far. Whether the earthquakes are related to new magmatic intrusions at depth is a unknown but a possible scenario. [more]

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