Publication: Los terremotos de 1748 de Montesa (Valencia) y de 1790 de Orán (Argelia)
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2017
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Universidad Complutense de Madrid, Servicio de publicaciones
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Abstract
Los terremotos de Montesa (Valencia) de 23 de marzo de 1748 y de Orán (Argelia) de 9 de octubre de 1790 causaron grandes daños y se sintieron en una amplia zona. La abundante documentación contemporánea que existe ha permitido una re-evaluación en la escala EMS-98 de la intensidad sísmica, obteniéndose valores en la región epicentral de IX para Montesa y IX-X para Orán. De la distribución de intensidades es posible correlacionar las rupturas con las fallas existentes en la zona. Para el terremoto de Orán de 1790 se propone un foco submarino en base al tsunami que originó. En ambos casos, los terremotos ocurren en zonas de baja sismicidad, lo que lleva a infra-estimar la peligrosidad sísmica de estas zonas.
The Montesa (Valencia) earthquake of 23 March 1748 and the Orán (Algeria) earthquake of 9 October 1790 caused heavy damage and were felt over a wide area. The abundant contemporary documentation about the damage caused by these earthquakes, allows a re-evaluation of the seismic intensity distribution giving a maximum intensity I = IX (EMS-1998) for Montesa and IX-X for Oran. From intensities distribution it is possible to correlate the seismic ruptures with the geological faults in the epicentral area. For the Oran earthquake we propose an off-shore focus due to the occurrence of a tsunami. The Montesa and Oran earthquakes have occurred in a region considered of low seismic hazard where few large earthquakes have happened.
The Montesa (Valencia) earthquake of 23 March 1748 and the Orán (Algeria) earthquake of 9 October 1790 caused heavy damage and were felt over a wide area. The abundant contemporary documentation about the damage caused by these earthquakes, allows a re-evaluation of the seismic intensity distribution giving a maximum intensity I = IX (EMS-1998) for Montesa and IX-X for Oran. From intensities distribution it is possible to correlate the seismic ruptures with the geological faults in the epicentral area. For the Oran earthquake we propose an off-shore focus due to the occurrence of a tsunami. The Montesa and Oran earthquakes have occurred in a region considered of low seismic hazard where few large earthquakes have happened.
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©2017, Universidad Complutense de Madrid, Servicio de publicaciones
Este trabajo ha sido parcialmente financiado por el MINECO, proyecto CGL2013-45724-C3-1-R.