Earthquake environmental effects of the AD 1755 Lisbon-Earthquake-Tsunami in Spain
- Pablo G. Silva Barroso
- P.V. Gómez Diego
- Javier Elez
- Jorge L. Giner Robles
- Miguel Ángel Rodríguez Pascua
- Elvira Roquero
- A. Martínez Graña
- Teresa Bardají
- Begoña Bautista Davila
- Ana Gomes (ed. lit.)
- Célia Gonçalves (ed. lit.)
- Lino André (ed. lit.)
- Nuno Bicho (ed. lit.)
- Tomasz Boski (ed. lit.)
Éditorial: Asociación Española para el Estudio del Cuaternario ; Grupo de Trabalho Português para o Estudo do Quaternário (GTPEQ)
Année de publication: 2017
Pages: 53-57
Type: Chapitre d'ouvrage
Résumé
This work presents a macroseismic analysis of the AD 1755 Lisbon Earthquake-Tsunami event by means of the combination of intensity data derived from the EMS-98 scale (Building damage), the ESI-07 scale (Environmental damage) and the TEE-16 scale (tsunami damage). Almost 600 records of environmental damage were identified and catalogued from Martínez Solares (2001): 18 slope movements, 15 cases of ground cracking, 19 cases of liquefaction, 153 hydrogeological anomalies (changes springs and wells), and 217 hydrological anomalies including anomalous waves in rivers and lakes, increasing turbidity in waters, and changes of river flow rates and even river paths. 66 tsunami records occurred along 200 km of the Spanish littoral in the Gulf of Cádiz. These last tsunami effects generated a narrow littoral fringe of intensity IX – VIII on which the huge energy released in the offshore macroseismic zone were transferred. In the rest of SW Spain intensities VIII – VII are clearly associated with site and topographic effects all along the Guadalquivir Basin and marginal reliefs, especially the Betic front around the Sierra de Cazorla Area.