Análisis geológico del terremoto de Torrevieja de 1829 (Alicante, SE España)
- P.G. Silva 1
- J. Elez 1
- Jorge L. Giner-Robles 2
- R. Pérez-López 3
- Elvira Roquero 4
- M.A. Rodríguez-Pascua 3
- Teresa Bardají 5
- A.M. Martínez-Graña 1
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1
Universidad de Salamanca
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2
Universidad Autónoma de Madrid
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- 3 Instituto Geológico y Minero de España, IGME
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4
Universidad Politécnica de Madrid
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5
Universidad de Alcalá
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Editorial: Universidad del País Vasco = Euskal Herriko Unibertsitatea
ISBN: 978-84-17713-16-4
Año de publicación: 2019
Páginas: 434-437
Congreso: Reunión Nacional de Cuaternario (15. 2019. Bilbao)
Tipo: Aportación congreso
Resumen
This work examines from a geological point of view the data on the 1829 Torrevieja Earthquake (IX-X Intensity) reported by Larramendi (1829) and De Prado (1863). The study evidences the dichotomy of the dominant geological processes occurred in the hanging-wall and foot-wall of the Lower Segura reverse fault, the seismogenic source of the earthquake. In the foot-wall (Lower Segura Depression) the poorly compactednature of sediments and reclaimed lands triggered devastating liquefaction, ground cracking and lateral spreading processes affecting the river margins and the ditch irrigation-system of the area (ancient delta distributary channels). On the contrary, in the hanging-wall hydrogeological anomalies were no widespread, but a permanent uplift of c. 20-22 cm was reported in the littoral zone and the Torrevieja salt-marshes. The uplift was recorded between Torrevieja and Cabo Cervera, about 4 km to the north, butprobably the uplift affected to the c.15 km separating Torrevieja and Guadarmar, all along the entire hanging-wall of the LowerSegura Fault.