2001•Geotemas ( Madrid )Requires access
Variaciones morfológicas y granulométricas asociadas a época de temporal: playa de Panxón (Galicia)
Rosana Álvarez Vázquez, Ana M. Bernabeu Tello, Miguel Ángel Nombela Castaño, Federico Vilas Martín
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Abstract
The Galician coast was under exceptionally high energy-wave conditions during the winter of
2001. The effect of this unusual situation was monitored in two surveys (november 2000 and
february 2001) at Panxon beach. The main response was a decreasing slope of the beach profiles
from november to february. However, it was possible identify two different behaviour between
the exposed and protected zones of the beach. The profiles localized behind a seawall, with
lesser incident energy, reach a milder slope acumulating sand in the low and intermediate intertidal
zone. The sand was removilized along the total intertidal profile in the exposed beach zones. The
morphology and evolution ot each part of beach (exposed and protected) was controlled for
different sediment transport pathways: cross-shore and longshore, respectively. Grain size variations
along the beach support this interpretation. A preliminary hydrodynamical study allowed to
determined the energy distribution along the beach.