Sismicidad, sismotectónica y peligrosidad sísmica en la región Cantábricanuevos datos a partir de las redes sísmicas SISCAN y MISTERIOS (2014-2020)

  1. J.A. Pulgar 1
  2. A. Díaz-González 1
  3. D. Pedreira 1
  4. J.M. González-Cortina 1
  5. A. Olivar-Castaño 1
  6. L. Pie-Perales 1
  7. J. Gallastegui 1
  8. M. Ruiz 2
  9. J. Gallart 2
  10. J. Diaz 2
  11. A. Frankovic 3
  12. A. Franco 3
  1. 1 Universidad de Oviedo

    Universidad de Oviedo

    Oviedo, España


  3. 3 Ente Vasco de la Energía (EVE)
Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2021

Issue Title: X Congreso Geológico de España

Issue: 18

Pages: 561

Type: Article

More publications in: Geotemas (Madrid)


The present-day seismicity in the Cantabrian region (North of Iberia) is not well known due to the limited coverage of sta- tions from permanent seismic network in the area. Being an area traditionally considered of low seismicity, it has attracted less attention than other seismically more active regions, such as the southeast and northwest of the Iberian Peninsula, or the Pyrenean area. The new data collected by the temporary seismic networks implemented during the SISCAN and MIS- TERIOS projects (2014-2020) have allowed us to improve our knowledge about the seismic activity in the area. During the study period, for almost six years, a seismic network of more than 50 stations was deployed in the Cantabrian Region and the northern Iberian Chain. The density of stations and the regular geometry of these seismic net-works have allowed us to register a significant seismic activity. More than 1200 earthquakes have been located and more than 60 focal mechanisms have been calculated in a region where such data was hard-ly available. The events located with the greatest precision and the calculated focal mechanisms were used to improve the seismotectonic interpretation, with the identification of the main active faults. Final-ly, an evaluation of the seismic hazard in the Cantabrian region and the western Pyrenees has been car- ried out. To this end, a probabilistic modeling of the seismic hazard in terms of peak ground acceleration (PGA) and spectral acceleration (SA (T)) has been addressed for a return period of 475 years.