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]
1. [1] Universidad de Salamanca
  
  Universidad de Salamanca
  
  Salamanca, España
2. [2] Universidad Autónoma de Madrid
  
  Universidad Autónoma de Madrid
  
  Madrid, España
3. [3] Instituto Geológico y Minero de España
  
  Instituto Geológico y Minero de España
  
  Madrid, España
4. [4] Universidad Politécnica de Madrid
  
  Universidad Politécnica de Madrid
  
  Madrid, España
5. [5] Universidad de Alcalá
  
  Universidad de Alcalá
  
  Alcalá de Henares, España
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Localización: XV Reunión Nacional de Cuaternario Bizkaia Aretoa: Bilbao, 1-5 julio 2019. Libro de resúmenes, 2019, ISBN 978-84-17713-16-4, págs. 434-437
Idioma: español
Enlaces
- Texto Completo Libro

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.