The erosion of the beaches on the coast of Alicante: Study of the mechanisms of weathering by accelerated laboratory tests
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http://hdl.handle.net/10045/63058
Títol: | The erosion of the beaches on the coast of Alicante: Study of the mechanisms of weathering by accelerated laboratory tests |
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Autors: | López, Isabel | López, M. | Aragonés, Luis | Garcia-Barba, Javier | López García, María Pilar | Sánchez, Isidro |
Grups d'investigació o GITE: | Ingeniería del Terreno y sus Estructuras (InTerEs) | Durabilidad de Materiales y Construcciones en Ingeniería y Arquitectura |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Ingeniería Civil |
Paraules clau: | Particles weathering | Beach erosion | Dissolution of carbonates | Median sediment size D50 |
Àrees de coneixement: | Ingeniería e Infraestructura de los Transportes | Ingeniería de la Construcción |
Data de publicació: | 1-d’octubre-2016 |
Editor: | Elsevier |
Citació bibliogràfica: | Science of The Total Environment. 2016, 566-567: 191-204. doi:10.1016/j.scitotenv.2016.05.026 |
Resum: | One of the main problems that coasts around the world present, is the regression and erosion of beaches. However, the factors involved in these processes are unclear. In this study, the influence of sediment erosion on beach regression has been analysed. In order to do that, a three-step investigation has been carried out. Firstly, coastline variations of four Spanish beaches have been analysed. Secondly, a study on sediment position along the beach profile has been developed. Finally, the process that beach sediments undergo along the surf zone when they are hit by the incident waves has been simulated by an accelerated particle weathering test. Samples of sand and shells were subjected to this accelerated particle weathering test. Results were supplemented with those from carbonate content test, XRD, SEM and granulometric analysis. Results shows a cross-shore classification of sediments along the beach profile in which finer particles move beyond offshore limit. Besides, it was observed that sediment erosion process is divided into three sages: i) particles wear due to crashes ii) dissolution of the carbonate fraction, and iii) breakage and separation of mineral and carbonate parts of particles. All these processes lead to a reduction of particle size. The mechanism responsible of beach erosion would consist of multiples and continuous particle location exchanges along the beach profile as a consequence of grain-size decrease due to erosion. |
Patrocinadors: | M. Pilar López is indebted to the government of Spain for a fellowship of the “Formación de Personal Investigador (FPI)” programme (reference BES-2011-046401). |
URI: | http://hdl.handle.net/10045/63058 |
ISSN: | 0048-9697 (Print) | 1879-1026 (Online) |
DOI: | 10.1016/j.scitotenv.2016.05.026 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2016 Elsevier B.V. |
Revisió científica: | si |
Versió de l'editor: | http://dx.doi.org/10.1016/j.scitotenv.2016.05.026 |
Apareix a la col·lecció: | INV - INTERES - Artículos de Revistas INV - AORTA - Artículos de Revistas INV - DMCIA - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2016_Lopez_etal_SciTotEnv_566-567_final.pdf | Versión final (acceso restringido) | 5,28 MB | Adobe PDF | Obrir Sol·licitar una còpia |
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