Review of the internal structure of a climbing dune. The case of the Valdevaqueros dune (Cádiz, Spain)

Abstract

While the internal structure of transgressive dunes is relatively well understood, little is known about that of climbing dunes. The Valdevaqueros dune, located 10 kilometers northwest of Tarifa (Cádiz), is considered one of the largest and most active transgressive dunes in Europe, as well as one of the main climbing dunes of the Iberian Peninsula. This study analyzes the internal structure of the Valdevaqueros dune using ground-penetrating radar (GPR) profiles. The results reveal a variety of sedimentary structures that reflect different wind intensities and directions. The findings highlight the significant role of topography in the development of these structures. These results contribute to expanding knowledge about climbing dunes, and particularly the dynamics of the Valdevaqueros dune.