Local and Global Influences on the Evolution of a Transgressive Sand Barrier: Cíes Barrier, Northwest Spain

摘要: ABSTRACT C OSTAS , S. and A LEJO I., 2007. Local Global Influences on the Evolution of a Transgressive Sand Barrier: Cies Barrier, Northwest Spain. Journal Coastal Research, SI 50 (Proceedings 9th International Symposium), 1121 – 1125. Gold Coast, Australia, ISSN 0749.0208 The decadal evolution factors that control variability recent welded barrier located in northwest Spain have been investigated. Analysis morphological changes shoreline were carried out using georectified aerial photographs spanning from 1949 to 2003. shows complex temporal spatial behavior. Erosive constructive, or accretionary stages, alternate over time giving rise cyclical evolution. Shoreline behavior differed according geomorphic setting. In regards behavior, presented different response patterns depending presence dunes, cliffs an inlet. sand was related effect global (sea level climate change) local (storm regime sediment input). Despite some cyclic between 2003, net position moved landward approximately 24 m. This associated with inlet relocation lagoon infilling. episodic receded around m causing important such as adjacent infilling relocation. seems result combined scarcity, wave exposure, oscillation mean sea rise. These interact so their is greater than sum individual effects.