Cambios morfológicos y tasas recientes de erosión-depósito en la costa atlántica oriental de Huelva (España)

• Rodríguez Ramírez, A. ^[1] ; Cáceres, L.M. ^[2] ; Rodríguez Vidal, J. ^[1] ; Flores, E. ^[1] ; Cantano, M. ^[1] ; Guerrero, V. ^[1]
  1. [1] Universidad de Huelva

     Universidad de Huelva

     Huelva, España

     
  2. [2] Instituto de Recursos Naturales y Agrobiología, España
• Localización: Geogaceta, ISSN 0213-683X, Nº. 21, 1996 (Ejemplar dedicado a: 21a Sesión Científica, Huelva 1996), págs. 187-189
• Idioma: español
• Títulos paralelos:
  • Shoreline changes and recent erosion-sedimentation rates on the south Iberian Atkantic coast (SW Spain)
• Enlaces
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• Resumen

  • Following the maximum Flandrian Transgression (6,900 yr. B.P.), the original coastline, with wide promontories and estuaries, underwent considerable straightening out. This was due mainly to the intense littoral dynamics, causing retreat of the capes and progradation in the inlets. Measurement of recent rates of coastal advance-retreat have been possible thanks to the number of XVIth-XVIIth century watchtowers situated on the shoreline, and to geomorphological mapping and radiometric dating of the littoral sedimentary formations (Doñana). An area of maximum retreat has been identified (at the Asperillo tower) averaging around 1.2 m/yr in the last 240 years, and an area of maximum progradation (Doñana) averaging up to 2-4 m/yr for the last 1,800 years and 1.05 m/year in the last 200 years. The natural evolution of this coastal stretch shows a tendency for the erosive-sedimentary point of inflexion to move eastwards, as shown by the different erosive and sedimentary landforms of the area.