Intertidal finger bars at El Puntal spit, bay of Santander, Spain
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AuthorGarnier, Roland Charles; Medina Santamaría, Raul; Pellón de Pablo, Erica; Falqués Serra, Albert; Turki, Imen
We indentify the presence of an intertidal finger bar system in the swell-protected beaches of El Puntal Spit (Bay of
Santander, Spain). The Horus video monitoring system allows us to perform a 2 year survey (June 2008- June 2010).
We found that the bar system persists during the survey period with a wavelength of about 25 m and an oblique
orientation with respect to the shore. Moreover, the analysis of the position of a particular bar (Bar 10) shows a
movement characterized by a net migration to the west and a faster oscillation to the east or the west. Preliminary
climate data analysis and morphological model results show that tide seems to be a forcing in the motion of the bars
but also wind and waves generated by the wind probably affects the bar dynamics.
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