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DIGITAL.CSIC
Conference object . 2008 . Peer-reviewed
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Conference object . 2008 . Peer-reviewed
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Cambios morfodinámicos inducidos por una regeneración artificial sumergida

Authors: Ojeda, Elena; Ruessink, B.G.; Guillén, Jorge;

Cambios morfodinámicos inducidos por una regeneración artificial sumergida

Abstract

[ES] Se describe la respuesta morfodinámica del sistema de barras de Noordwijk (Holanda) a una regeneración artificial realizada en el perfil sumergido. Para evaluar esta respuesta se utilizaron imágenes de video adquiridas en los 6 años posteriores a la regeneración. El sedimento se vertió formando una barra artificial de 3 km de longitud localizada a unos 400 m de la barra externa. En los 3 años posteriores a la regeneración, la nueva barra migró más de 300 m hacia la costa manteniendo su identidad y; al mismo tiempo, interrumpió el ciclo natural de migración hacia la plataforma continental de las barras. Como consecuencia de la migración diferencial entre el tramo de barra localizado frente a la regeneración y los situados en ambos laterales, la barra externa se fragmentó. Las secciones laterales se degradaron o se unieron a secciones de barra frente a la regeneración localizadas en una posición más alejada de la costa. Esta secuencia de morfologías se conoce como sustitución de barras o bar switching y, en este caso, está favorecida por la regeneración

[EN] The response of a two-bar system at Noordwijk (the Netherlands) to a shoreface nourishment is analyzed based on daily data of time-exposure video images collected during 6 years. The nourishment was implemented as a 3-km alongshore bump some 400 m seaward of the outer bar. During the following years the nourishment migrated more than 300 m onshore before loosing its integrity and, at the same time, the nourishment interrupted the natural seaward migration of both bars for the entire duration of the study period. As a consequence of the differential migration rates between the bars at the region in front of the nourishment and the bars at both flanks, the outer bar became discontinuous with the flank section decaying or attaching to an offshore-located bar. In parallel, the bar section landward of the nourishment got attached to a landward located bar. This sequence of morphologies is known as abar switching and is found to be favoured by the shoreface nourishment

VII Congreso Geológico de España, 14-18 Julio 2008, Las Palmas de Gran Canaria.-- 4 pages, 2 figures, 1 table

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Spain
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Keywords

Bar switching, Eegeneración artificial, Video imager, Sustitución de barras, Subtidal sandbars, Shoreface nourishment, Barras, Monitorización con video

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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