RT info:eu-repo/semantics/article
T1 Surface movement and cascade processes on debris cones in temperate high mountain (Picos de Europa, northern Spain)
A1 Serrano Cañadas, Enrique
A1 Sanjosé Blasco, José Juan de
A1 Gómez Gutiérrez, Álvaro
A1 Gómez Lende, Manuel
K1 Geomorfología - España - Picos de Europa
K1 Scree slopes
K1 Pendientes pedregosas
K1 Debris cones
K1 Conos de derrubios
K1 Slope processes
K1 Procesos de pendiente
K1 Terrestrial Laser Scanner
K1 Láser escáner terrestre
AB Debris talus is a very common landform in the temperate high mountain, so much so that it is the most representative of the periglacial and nival processes. This work studies debris cones in the Picos de Europa, an Atlantic mountain range in the north of the Iberian Peninsula. A detailed geomorphological map was prepared, fieldwork was carried out on the debris cone surface, the ground and air thermal regime was analyzed, and a five-year Terrestrial Laser Scan survey carried out. Annual volume changes on the surface of the debris cones were detected and related to active processes and sediment transfer. Two different behaviors were observed in each cone. Cone A is linear, with equilibrium between accumulation and sediment transfer, while Cone B is concave-convex denoting accumulation processes in the upper part deriving from the greater frequency of snow avalanches. Changes in morphology surpass 50 cm/year with most of the activity taking place in the highest and lowest areas. The presence and action of the ice on the debris slope are moderate or non-existent and freeze-thaw processes are only active on the walls at over 2000 m a.s.l. The main processes on debris cones are debris flow and creep related to snowcover, but sediment transfer on the slopes involves high intensity-low frequency (debris flow, avalanches) and high frequency-low intensity processes (creep, shift, solifluction and wasting).
PB Elsevier
SN 0048-9697
YR 2019
FD 2019
LK http://uvadoc.uva.es/handle/10324/40680
UL http://uvadoc.uva.es/handle/10324/40680
LA eng
NO Science of The Total Environment, 2019, vol. 649. p. 1323-1337
NO Producción Científica
DS UVaDOC
RD 26-abr-2024