Fases de crecimiento y estructura interna de una duna costera en regeneración (Reserva de la Biosfera de Urdaibai, País Vasco)

Ouring a 3 year sand-dune regeneration projeet in the Laida beaeh (Biosphere Reserve of Urdaibai) both dune formation proeess and sedimentary features have been monitorized. The measured bimodal wind regime controls both the formation of bipolar sedimentary struetures at different seales and the growth of the sand dune. Main depositional and erosional processes controlling sand dune development and the preserved internal sedimentary structures are shown in this paper.