Listar Congresos 2011 y anteriores por fecha de publicación
Mostrando ítems 1-20 de 124
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Progress in gully erosion research: IV International Symposium on Gully Erosion
Casalí Sarasíbar, Javier
; Giménez Díaz, Rafael (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 ... -
Improving the structural stability of cropped soils in Olite (Navarre) using conservation tillage to reduce water erosion
Río Lahidalga, Iker del; Fernández Ugalde, Oihane ; Imaz Gurruchaga, María José ; Enrique Martín, Alberto ; Bescansa Miquel, Paloma (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
Contribución a congreso / Biltzarrerako ekarpena
The objective of this work was to compare the soil wet aggregate stability and its relationship to the soil organic matter stock in an agricultural soil under different types of tillage in a semi-arid area of Northern Spain. -
Relation between the location of check dams and adjacent vegetation cover in ephemeral gullies (Southeast Spain)
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
In general, the work carried out on vegetation in the Mediterranean catchments is focused more on the hillside vegetation cover than the riparian. Apart from occasional contributions by Alcaraz et al. (1997), Salinas et ... -
Evaluating airborne laser scanning for gully erosion detection and baseline mapping in the Fitzroy catchment, QLD, Australia
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
Australia’s climate and land management practises have resulted in an increased threat to land condition and water quality through sediment transported by gully erosion. The Fitzroy River catchment is located in Queensland ... -
Hydrological effects of the sediments deposited off a hillslope affected by rill erosion: project outlines and preliminary results
Giménez Díaz, Rafael ; Casalí Sarasíbar, Javier ; Campo-Bescós, Miguel (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
Contribución a congreso / Biltzarrerako ekarpena
The main objectives of this project are (i) to evaluate the sedimentation rate generated by rill erosion in a hillslope and the granulometric characteristics of the sediment deposited off this hillslope, and (ii) to ... -
Implications of recent experimental findings for rill erosion modeling
Govers, G.; Giménez Díaz, Rafael ; Van Oost, K. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)
Contribución a congreso / Biltzarrerako ekarpena
The major aim of this paper is to critically review the theoretical concepts that are underpinning current models of rill flow and sediment detachment in the light of recent experimental results and, when necessary, to ... -
Gully erosion on cinder cones of Tenerife (Canary Islands, Spain)
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
The aim of this study is to observe the evolution of gully erosion on cinder cones over time and verify whether or not age is a critical factor in the level of degradation of scoria cones, independent of other factors. -
Ephemeral gullies: to till or not to till?
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
While the perceived magnitude of ephemeral gully erosion may be masked after gullies are repaired, the action of plowing in these channels reduces topsoil thickness and crop productivity over a much wider area than the ... -
Modelling the occurrence of gullies in semi-arid areas of south-west Spain
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
Modern predictive models represent a powerful tool for predicting and analyzing geomorphological phenomena like gullying. The model obtained presents a high percentage of success in classifying gullied and ungullied ... -
Ephemeral gully headcut development and migration in stratified soils
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
The objectives of the current study were: (1) to quantify the effect of an erosion resistant (ER) soil layer placed at various depths within a soil profile on headcut development and migration; and (2) to assess the ... -
Prehistoric and modern impacts on gully formation on the loess hills of northern Mississippi, USA
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
In this work the authors present two sites that will help understand the processes that drive gully formation in the uplands of northern Mississippi and how these processes are affected by anthropomorphic influences. The ... -
Urban gullies in São Luis City, Maranhão State, Brazil
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
Urban gully erosion is a serious problem in São Luís City, Maranhão State, Brazil. São Luís Municipality covers 831.7 km? and is situated in west-central Maranhão Island (2º19’09”-2º51’00” S; 44º01’16”-44º19’37” W). ... -
Agricultural land use, piping and gullies activity in the Huelva lower valley (Saragossa, Spain)
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
The variations in the total amount of surface used for arable crops both for dry farming and fallow land, with regard to the different “agricultural policies”, have modified the natural dynamics of some processes such ... -
Proposed methodology to quantify ephemeral gully erosion
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
The overall objective of the proposed research is to identify and quantify landscape attributes and hydrologic conditions that can be used to assess hillslope seepage and ephemeral gully erosion. We propose to use three ... -
Gully erosion in mountain area of SW-China, assessed using 137Cs and 210PBEX tracers and GPS survey
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
Gullies are extensively distributed in the Upper Yangtze River Basin, SW-China. But the impact of these gullies on total sediment output is still not clear because there is no reliable technique for quantifying this ... -
A proposal to study gully erosion on silica sand and arkose slopes in central Spain
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
A research project to be developed, granted by the Spanish Minister of Education and Science (project CGL2006-07207), aims to investigate gully erosion on silica sand and arkose slopes in Central Spain. The period of the ... -
Long term evolution of incised coastal channels on the isle of Wight, UK: insights from numerical modelling
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
Moderate rates of effective precipitation induce a realistic incised channel network, providing there is a step cliff profile present. Such a step profile is shown to be produced by sea-level rise and associated cliff ... -
Concentrated flow erodibility of loess-derived topsoils: the impact of rainfall-induced consolidation and sealing
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
This study investigates the impact of rainfall-induced soil consolidation and soil surface sealing processes over time after tillage on soil erosion during concentrated flow. The soil erodibility (Kc) and critical flow ... -
A comparison of anthropogenic and long-term soil erosion on banks peninsula using 137Cs and kawakawa tephra
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
The task of this study is to assess the severity of anthropogenically induced soil erosion on a loess-mantled hillslope on the foothills of Banks Peninsula, South Island, New Zealand. The analysis is restricted to a slope ... -
Gully dynamics: initiation and morphology
(Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007) Contribución a congreso / Biltzarrerako ekarpena
The paper reviews general conditions for initiation and maintenance of gullies.
