Mots-clés
Argile Badland Bassin-versant Coulée boueuse Domaine aride Domaine semi-aride Dynamique de versant Granulométrie Géomorphométrie Italie Pente de versant Toscana Arid area Badland Clay Geomorphometry Grain size distribution Italy Mudflow Semi-arid area Slope dynamics Slope gradient Toscana Watershed Alud de barro Arcilla Badland Campo semiárido Campo árido Cuenca hidrográfica Dinámica de vertiente Geomorfometría Granulometría Inclinación de la vertiente Italia ToscanaDynamic evolution of badlands in the Roglio basin (Tuscany, Italy)
Auteur(s) et Affiliation(s)
BATTAGLIA, S.
Ist. di Geoscienze e Georisorse, Italian National Research Council, Pisa, Italie
LEONI, L.
Dip. di Scienze della terra, Univ., Pisa, Italie
RAPETTI, F.
Dip. di Scienze della terra, Univ., Pisa, Italie
SPAGNOLO, M.
Geography and Environment Dep., Univ., Aberdeen, Royaume-Uni
Description :
A morphometric analysis on the badlands has highlighted that these landforms formation and distribution are primarily related to the steepness of the hill flanks, which favour runoff and gravitational processes, along with favourable aspects, typically the southern ones that experience a stronger solar-induced daily thermal variation. A detailed physico–chemical analysis of the clayey material involved has also been carried out, with the specific aim of testing whether this plays a role in the various stages of activity shown by the Roglio basin badlands. The results indicate that there are no significant differences in the physico–chemical properties of an active vs. an inactive/dormant badland. Observation and field data, however, indicate that the dynamic of the Roglio basin badlands is strongly controlled by the occurrence of earth flows and the velocity of sediment removal at the bottom of the badlands.
Type de document :
Article de périodique
Source :
Catena (Giessen), issn : 0341-8162, 2011, vol. 86, n°. 1, p. 14-23, nombre de pages : 10, Références bibliographiques : 44 ref.
Date :
2011
Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)