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handle: 10902/24292
RESUMEN: El ancho de la playa juega un papel fundamental en el nivel de protección frente a temporales que ofrecen las playas a asentamientos y comunidades costeras. En invierno, hay erosión en la berma emergida de la playa haciendo que la línea de costa retroceda y en verano, ante condiciones de calma, las playas tienden a recuperarse, sin embargo, los procesos de acreción son normalmente más lentos que los procesos erosivos, por lo que es habitual que la playa no se recupere completamente antes del verano. Teniendo en cuenta lo anterior, el objetivo del presente documento es estudiar el comportamiento del perfil de playa bajo condiciones de acreción en playas con marea en condiciones naturales y con reperfilado mecánico, validando si ante el uso de técnicas de recuperación asistida se consigue una recuperación eficiente y más rápida de la playa que de manera natural. En torno a dos líneas de aproximación se ha llevado a cabo un estudio basado en ensayos de laboratorio con fondo móvil y mediciones en campo, donde se implementa y se simula el scraping, de esta forma se válida la efectividad de la técnica y se estudia la evolución del perfil, dando como resultado que el scraping es un método apto no solo para la recuperación de la playa, sino como forma de mitigación de impactos ante la presencia de temporales.
ABSTRACT: Beach width plays a fundamental role in the degree of protection offered to coastal settlements and communities from storms. Winter triggers erosion of the subaerial beach causing shoreline recession, while in summer, under calm conditions, beaches tend to recover. Nevertheless, accretion processes are naturally slower than erosion processes, hence it is common that the beach does not fully recover before summer. Considering the above, the aim of this paper is to study the behavior of the beach profile under accretion environment on tidal beaches using both natural conditions and mechanical re-profiling, validating whether the use of assisted recovery techniques leads to a more efficient and faster accretion processes than in a natural way. The research has been done insi-tu and laboratory. The research has been done insi-tu and laboratory, scraping is implemented and simulated, thus validating the effectiveness of the technique, and studying the evolution of the profile, obtaining as a result that scraping is an appropriate method not only for beach recovery, but also to mitigate the impacts caused by storms.
Máster en Ingeniería costera y portuaria
Scraping, Laboratory experiments, Perfil de equilibrio, Mareas, Tides, Experimento de laboratorio, Equilibrium profile
Scraping, Laboratory experiments, Perfil de equilibrio, Mareas, Tides, Experimento de laboratorio, Equilibrium profile
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