Effect of topography on retreat rate of different gully headcuts in Bardenas Reales area (Navarre, Spain)
Fecha
2007Versión
Acceso abierto / Sarbide irekia
Tipo
Contribución a congreso / Biltzarrerako ekarpena
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
|
nodoi-noplumx
|
Resumen
In Northeast Spain, gullying is a widespread phenomenon.
This type of erosion is especially intense in Bardenas Reales
(Navarre) where at least two major typical kinds of gully
headcut are present. A first group developed in soil material
(named, conventional gully headcut), and second group of
gully headcut with a sandstone layer as a top horizon
(named, sandstone gully headcut). In additi ...
[++]
In Northeast Spain, gullying is a widespread phenomenon.
This type of erosion is especially intense in Bardenas Reales
(Navarre) where at least two major typical kinds of gully
headcut are present. A first group developed in soil material
(named, conventional gully headcut), and second group of
gully headcut with a sandstone layer as a top horizon
(named, sandstone gully headcut). In addition,
within the former group, we can distinguish a subgroup of
gully headcuts developed in soils particularly prone to
piping and tunnelling due to the dispersive condition of the
materials (named piping associated gully headcut).
In this situation, a question arises: to what extent simple
topographic parameters account for the retreat rate of the
different kind of gully headcuts observed in the region of Bardenas Reales? The aim of this study was to investigate and gain insight in this issue. [--]
Materias
Gully headcuts,
Bardenas Reales (Navarra)
Editor
Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
Publicado en
Javier Casalí, Rafael Giménez (eds.): Progress in Gully Erosion Research. IV International Symposium on Gully Erosion. September 17-19, 2007. Pamplona, Spain. Pamplona: Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007
Notas
Resumen del trabajo presentado al IV International Symposium on Gully Erosion, celebrado en la Universidad Pública de Navarra del 17 al 19 de septiembre de 2007.
Departamento
Universidad Pública de Navarra. Departamento de Proyectos e Ingeniería Rural /
Nafarroako Unibertsitate Publikoa. Landa Ingeniaritza eta Proiektuak Saila
Entidades Financiadoras
Part of the present work was financially supported by
The Education Department of the Government of Navarre (Project “Erosión
del suelo en las Bardenas Reales de Navarra: caracterización de la evolución
de la red de drenaje permanente”). Rafael Giménez was funded by the
Spanish Ministry of Education and Research (Juan de la Cierva Programme).