Monday, Mar 17, 2014
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. ...
Saturday, Mar 15, 2014
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. ...
Photos from El Hierro
El Hierro volcano
The triangular island of El Hierro is the SW-most and least studied of the Canary Islands.
11 Apr 2014
Typical eruption style
: mainly effusive, basaltic fissure eruptions
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
Last earthquakes nearby:
View all recent quakes
|Time||Mag. / Depth||Distance||Location|
|Fri, 18 Apr|
|Fri, 18 Apr 10:25 UTC||M 2.3 / 12 km||13 km||SW FRONTERA.IHI|
|Fri, 18 Apr 04:52 UTC||M 0.8 / 15 km||11 km||NW EL PINAR.IHI|
|Fri, 18 Apr 02:47 UTC||M 1.5 / 12 km||17 km||W FRONTERA.IHI|
|Thu, 17 Apr|
|Thu, 17 Apr 21:27 UTC||M 1.0 / 10 km||11 km||NW EL PINAR.IHI|
|Thu, 17 Apr 21:25 UTC||M 0.9 / 12 km||12 km||SW FRONTERA.IHI|
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.
Background:The massive El Hierro shield volcano is truncated by a large NW-facing escarpment formed as a result of gravitational collapse of El Golfo volcano about 130,000 years ago. The steep-sided 1500-m-high scarp towers above a low lava platform bordering 12-km-wide El Golfo Bay, and three other large submarine landslide deposits occur to the SW and SE. Three prominent rifts oriented NW, NE, and south at 120 degree angles form prominent topographic ridges. The subaerial portion of the volcano consists of flat-lying Quaternary basaltic and trachybasaltic lava flows and tuffs capped by numerous young cinder cones and lava flows. Holocene cones and flows are found both on the outer flanks and in the El Golfo depression. El Hierro contains the greatest concentration of young vents in the Canary Islands. Uncertainty surrounds the report of an historical eruption in 1793 at Volcano of Lomo Negro. Source: Smithsonian GVP
A storm arises on El Hierro, Canary islands. (Photo: Janka)
South rift zone landscape, El Hierro Island (Canary Islands) (Photo: Tom Pfeiffer)
Lava bomb at Playa de Verodal/El Hierro (Photo: Tobias Schorr)
Big surf at the west coast of El Hierro Island. The coast is formed by Holocene basalt lava flows forming a plateau that is exposed to the full force of the ocean waves. ...
The area of the submarine vent during a phase of upwelling muddy water producing a visible stain and foam on the ocean surface. Canary islands, El Hierro (Photo: Janka)
Harsh volcanic landscape near La Restinga on El Hierro, Canary islands (Photo: Janka)
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