Movilidad de las formas de fondo en la desembocadura del estuario del Río Piedras (Huelva) durante las mareas vivas

Abstract

The present work analyzes the bed mobility in the outer area of the estuary of Piedras River by observing the changes of morphology, dimensions and orientation of bedforms by means of the use of technical of Side-Scan Sonar. This coastal system is a small and narrow estuary, with a reduced fluvial input that develops a wide littoral spit in its mouth in whose apex a wide ebb-tidal delta is developed. On the back area of the deltas flood and ebb tidal currents develop a variety of sandy bedforms. The comparison of flood and ebb forms allows analyze the hydrodynamic regime and the sand mobility due to the action of the main currents