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Regional variability of coastal dunes observed along the Emilia-Romagna littoral, Italy

AutorCorbau, C.; Simeoni, U.; Melchiorre, Massimiliano; Rodella, I.; Utizi, K.
Palabras claveEvolution
Human impacts
Factor analysis
Dune classification
Adriatic Sea
Foredune morphology
Fecha de publicación2015
CitaciónAeolian Research 18: 169-183 (2015)
Resumen© 2015. The knowledge of the evolution and conservation of the coastal dunes inside a beach-dune system is fundamental for their protection and for appropriate coastal management. We analyze and classify the coastal frontal dunes present along the Emilia-Romagna according to beach and dune characteristics as well as human activities by using aerial photographs and field measurements. Aeolian sand transport was calculated using a simple predictive equation. The results show that 62 coastal dune systems extending for 31. km are still bordering the 130. km coastline of the Emilia-Romagna region and we observe an alongshore variability of the dune's characteristics. This variability is controlled by the sedimentary budget, beach orientation to the wind-wave direction and human impacts. Four groups of frontal dunes are identified through factorial analysis: two groups are natural dunes, while the other two display characteristics that demonstrate the consequences of human activities. However, the dunes that present the worst conditions are natural dunes corresponding to regressive forms. It also appears that human intervention, when the human impacts have cancelled the original characteristics of the dunes or have obstructed the formation and growth of incipient dunes, have allowed their conservation and protection. We therefore suggest that the dunes presenting the worst conditions, which are often bordered by a narrow beach, need to be protected, considering that the most efficient protection of the dune is provided by a wide, stable beach. This highlights how successful beach nourishment has a positive impact on the foredune's systems favoring their development and conservation.
Versión del editorhttp://dx.doi.org/10.1016/j.aeolia.2015.07.001
Identificadoresdoi: 10.1016/j.aeolia.2015.07.001
issn: 1875-9637
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