Five years of beach drainage survey on a macrotidal beach (Quend-Plage, northern France) | Zendy

Olivier Bain | Zendy; Renaud Toulec | Zendy; Combaud Anne | Zendy; Guillaume Villemagne | Zendy; Pascal Barrier | Zendy

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Five years of beach drainage survey on a macrotidal beach (Quend-Plage, northern France)

Author(s) -

Olivier Bain,

Renaud Toulec,

Combaud Anne,

Guillaume Villemagne,

Pascal Barrier

Publication year - 2016

Publication title -

comptes rendus géoscience

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.58

H-Index - 78

eISSN - 1778-7025

pISSN - 1631-0713

DOI - 10.1016/j.crte.2016.04.003

Subject(s) - plage , foredune , accretion (finance) , geology , beach nourishment , coastal erosion , drainage , erosion , swash , hydrology (agriculture) , oceanography , geomorphology , shore , geotechnical engineering , ecology , physics , astrophysics , biology

A drainage system was installed in 2008 on the macrotidal beach of Quend-Plage, close to Abbeville (Somme, northern France), following a period of significant erosion of recreational areas. The “Direction départementale des territoires et de la mer” (French Coastal Department Authority) has requested a biannual survey in order to validate the beach drainage setup and its efficiency. This paper presents the methodology used for this survey, and the response of the coastal system to this soft engineering method for preventing erosion. These five years of drainage operation have strongly modified the morphology of the beach. Three main modifications occurred: (i) accretion of the upper beach and foredune, (ii) erosion of the lower and middle beach and (iii) a slight shift in directions of the beach bars and troughs. These morphological changes finally led to the stabilization of the beach

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