Earthquakes in Spain

[cliveGrazalema]

Interesting article in the English language version of the El Pais newspaper. The title is a bit scary but does grab ones attention 🙂 “Why 14 million Spaniards are at risk from earthquakes”

Swathes of the Iberian peninsula form part of a ‘hot zone’ for seismic activity due to the increasing proximity of tectonic plates, the impact this has on fault lines and the specific characteristics of the land

December 2, 2020, to January 27 of this year, the National Seismic Network recorded more than 430 earthquakes of magnitudes between 3 and 4.5 on the Richter scale in Atarfe, a city close to the capital of Granada, according to a report by researchers Julián García-Mayordomo and Raúl Pérez López, for the Spanish Geological and Mining Institute (IGME). The movement of the plates (which are relatively rigid) and the deformation of the lithosphere (the rocky outer part of the Earth) produce a field of tectonic stress that impacts the faults – the fractured seams in the Earth’s floor that can be found throughout the peninsula, particularly from Lisbon in Portugal to Ourense in Galicia, throughout the Mediterranean arc and along the border with France.

The full article is here……

https://english.elpais.com/science_tech/2021-02-12/why-14-million-spaniards-are-at-risk-from-earthquakes.html

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[Linda Mary Olivine]

There are lots of small faults immediately west of Granada which is goof from the point of view of seismic risk because there are regular small movements on these = lots of little tremors, rather than a single big, devastating San Andrea’s style earthquake.

[Anonymous]

We have seismic activity pretty much constantly here in the Conca de Tremp, almost entirely impossible to feel, and the regeon has recentky been given Geoparc status by UNESCO but of course with the present c¡situation theren’s precious little evidence of this on the ground …

Living here we never feel threatened aven though there have been some horrendous landslips, one of which did cause fatalities back in 2018, and elderly couple whose car was caught in the event.

Regs

Simon

[Linda Mary Olivine]

Great news about the geopark status!

Mountain belts, like the Betics in Andalucia, the Pyrenees (Tremp) and indeed the Alps where I live always get seismic activity – its their nature! And small ones are good because they release built up stress but without too much damage

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