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El Hierro earthquake count exceeds 4200 in past five weeks
The number of daily earthquakes recorded on the smallest of the Canary Islands (Spain), El Hierro, has increased considerably in recent days. The Instituto Volcanologico de Canarias has also reported a 1cm inflation over part of the island’s volcano following on from GPS analysis.
The total number of tremors recorded during the past five weeks has now exceeded 4200, according to the Instituto Geografico Nacional (IGN). The majority of the earth tremors range between 1 and 3 magnitude. More than 431 earthquakes, including one measuring 3.5 magnitude on the Richter Scale, were recorded on Monday (22 August) alone.
UPDATE 07/09 – 14:26 UTC : Tremor has continued at El Hierro since the start of seismicity in July. Between the 30th August and 3rd September seismic events were high at ~200 to 250 a day. However, since then there have been less than 100 events a day. GPS stations are now in place around the volcano. On the 24th of August Eruptions Blog and @Teideano reported an uplift of ~1 cm. There has been no uplift (inflation – to my knowledge) reported recently.
It seems that magma is still moving beneath El Hierro and may continue for a while to come yet. So keep watching.Up to date info is available at Actualidad Volcánica de Canarias.
UPDATE 05/08 – 21:09 : Earthquake events are continuing underneath El Hierro, with the majority of events between 8 and 15 km in depth, and as shallow as 2 km (+/- 0.5) with an average of around 11.5 km. As of yet, there are still NO other additional signs of an eruption, an increase in gas (which has been detected) or any change to deformation signals.
In a post of the Eruptions blog by Erik Klemetti, the situation at El Hierro is described in detail. For the moment it is still to early to tell what will happen, so keep watching.
Earthquake activity below El Hierro (volcano), Canary Islands, Spain – Update 07/09