Buscar
Mostrando ítems 1-10 de 15
Progress in gully erosion research: IV International Symposium on Gully Erosion
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
Libro / Liburua,
The classic forms of water erosion of the soil comprise sheet, rill, and gully erosion. According to the concept most
generalized, in sheet erosion, thin layers of material are uniformly removed from the soil surface due ...
Runoff and sediment supply from small gullied and ungullied basins in a semi-arid grazed environment
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
The aim of the present study is to determine links between rainfall, runoff, gully erosion and sediments. The extent of sediment yield (suspended sediment and bedload) and runoff response from gullied and ungullied basins ...
Assessment of gully erosion using photogrammetric techniques. A case study of upper Mbuluzi river, Swaziland
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
Swaziland is severely affected by gully erosion contributing
to a sediment budget up to 250,000 m3 y-1 (WMS Associates,
1988). This type is more important than inter-rill and rill
erosion. Severe gully erosion is mainly ...
When did gully erosion start to be accelerated in the Penedès – Anoia vineyard region (NE Spain)?
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
Gully erosion in the Penedès-Anoia (NE Spain) region is not a past phenomenon. In
this respect, recent research by Martínez-Casasnovas et al.
(2003) has shown that neat erosion rates in gullies reach
576±58 Tn ha-1 year-1 ...
Influence of snowmelt and heavy rainfalls on water and sediment yield from loess gully catchment (Lublin upland – Poland)
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
The surface discharge from the gully catchments of the
Lublin Upland (Poland) usually is not very high and
amounts to about 15 mm·yr-1. It is mainly an episodic
discharge of snow/rainfall regime. Surface runoff and ...
Estimating sediment yield from gully erosion using easily measurable morphometric characteristics in Darehshahr region, south of I.R. Iran
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
A case study was conducted in a part of Ilam Province,
I.R. Iran, to establish a reliable model for estimating
sediment yield from gully erosion. The attempt was
satisfactory and led to an applicable model whose input
could ...
Recent developments in gully erosion research and their implications for controlling soil loss and sediment yield
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
Soil erosion by water causes significant soil degradation
worldwide. Most erosion process research and erosion
control has focussed on sheet and rill erosion. Relatively
little research has dealt with (ephemeral) gully ...
Seepage flow in aquifers with open and closed boundaries
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
At previous gully erosion conferences, the effect of
surface seal development on gully formation and growth
was analyzed (Prasad and Römkens, 2003) and the effect of
hydrological conditions on gully growth was discussed
(Römkens ...
Discharge and gully erosion in a small rangeland catchment
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
Valley bottom gullies are a common feature in rangelands.
Although these gullies are found in the bottom of drainage
lines, information about the relationship between discharge
and gullying is scarce (Crouch, 1990; ...
Causes of gully erosion in arid ecosystem: case study southern part of I.R. Iran
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
info:eu-repo/semantics/conferenceObject,
This research demonstrated that the I.R. region is prone
to gully erosion. The study area had limited gully erosion
four decades ago. With accelerating urban development
during the past, two to three decades, areas of gully ...