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Embryo dune development on a large, actively accreting macrotidal beach: Calais, North Sea coast of France
Author(s) -
Anthony Edward J.,
Vanhée Stéphane,
Ruz MarieHélène
Publication year - 2006
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.1442
Subject(s) - geology , beach ridge , aeolian processes , bedform , sediment transport , plage , beach nourishment , storm , longshore drift , oceanography , sedimentary budget , submarine pipeline , accretion (finance) , shore , winter storm , hydrology (agriculture) , geomorphology , sediment , geotechnical engineering , physics , astrophysics
Sediment budget data from an 18‐month topographic survey were analysed with data from brief experiments on wind parameters, beach moisture contents, bedforms and sand mobilization in order to monitor conditions and patterns of embryo dune development over a flat 150–1000 m wide accreting upper beach. The surface conditions over the upper beach locally affect aeolian transport, but net dune development over time depends on sustained strong winds and their orientation. Incoming marine sand supplied by storms and onshore winds is reorganized by the dominant offshore to longshore winds into elongated embryo dunes over this upper beach, imprinting a regional morphology of long‐term longshore dune ridge development. Copyright © 2006 John Wiley & Sons, Ltd.