Now showing items 1-20 of 64

    • Activity of gullies during the Holocene in the Ebro valley 

      Peña, Julio; Constante, A.; Chueca, J.; Echeverría Arnedo, María Teresa; Julián, A.; Longares, L.A. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The use of detailed geomorphology for the study of the Upper Holocene and the application of geoarchaeology and radiometric datings make it possible to get important results on the recent stages of valley bottom shaping. ...
    • Assessment of gully erosion using photogrammetric techniques. A case study of upper Mbuluzi river, Swaziland 

      Pelacani, S.; Märker, M.; Rodolfi, G. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Hydrological and sediment dynamics within a small catchment with badland areas 

      Nadal-Romero, Estela; Regüés, D.; Latron, J.; Lana Renault, Noemí; Serrano-Muela, M. Pilar; Martí Bono, C. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Badlands are the main sediment source areas affecting the headwaters of the Gállego and Aragón rivers in the Central Spanish Pyrenees. These morphologies characterise the landscape of the Inner Depression, occupying ...
    • Photogrammetrical and field measurement of gullies with contrasting morphology 

      Marzolff, I.; Giménez Díaz, Rafael Upna Orcid; Seeger, M.; Campo-Bescós, Miguel Upna Orcid; Ries, J. B.; Casalí Sarasíbar, Javier Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Despite a wealth of studies on monitoring different types of gullies by using remote-sensing technique such as photogrammetry, relatively few efforts have been made to test their accuracy. Therefore the question arises ...
    • Erosion processes at the gully scale: observations, quantification and interpretation of field data from the Draix laboratory 

      Mathys, N.; Klotz, S.; Esteves, M.; Grésillon J.M. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In the Southern French Alps, the black marls formation covers a large area and is highly susceptible to weathering and erosion. It has a badlands topography and is subject to high solid transport, bringing high sediment ...
    • Regional assessment of gully systems in a hilly olive-orchard dominated landscape 

      Masri, Z.; Turkelboom, F.; Pauw, E. de; Muhammad, A. M.; Sheikho. A.; Dalton, P. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Olive orchards dominate the land use at the hills of Afrin area, and olive oil represents the most important cash income source for rural communities in this area. However, olive yields in many orchards have been decreasing ...
    • Gully erosion in semi-arid landscapes - monitoring of processes and development 

      Ries, J. B.; Marzolff, I.; Seeger, M. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The research project MoGul (Large-scale Monitoring of Gully Erosion in Semi-Arid Landscapes) at Trier and Frankfurt University investigates the various types, development and dependencies of gullies as well as geomorphological ...
    • Gully development and topographic threshold, case study: Kerman Province, southeast of I.R. Iran 

      Mehdipour, A.; Soufi, M.; Baniasadi, M. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This research indicated that gully erosion can severely damage croplands in this area of Iran. Significant gully development occurred in the 3 years of study and the product of drainage headcut area and slope was more strongly ...
    • Recent developments in gully erosion research and their implications for controlling soil loss and sediment yield 

      Poesen, J. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Morphology and controlling factors of landslide cirque gullies: a case study from the Sprogu gravas nature monument (SE Latvia) 

      Soms, J. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Human-induced changes of landscape and the vegetation cover have been recognized in the majority of studies focusing on gully formation as one of the most important factors triggering the development of gullies throughout ...
    • Influence of snowmelt and heavy rainfalls on water and sediment yield from loess gully catchment (Lublin upland – Poland) 

      Rodzik, J.; Furtak, T.; Zglobicki, W. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Effectiveness of palm and bamboo geotextiles in reducing concentrated flow erosion 

      Smets, T.; Langhans, C.; Poesen, J.; Knapen, A. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Rills and gullies, caused by concentrated flow erosion, represent an important sediment source in many environments (Poesen et al., 2003). Studies indicate that vegetation can be very effective in controlling gully ...
    • Estimating sediment yield from gully erosion using easily measurable morphometric characteristics in Darehshahr region, south of I.R. Iran 

      Sadeghi, S.H.R.; Noormohammadi, F.; Soufi, M. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Discharge and gully erosion in a small rangeland catchment 

      Schnabel, Susanne; Gómez Gutiérrez, Á.; Sanjosé Blasco, J.J. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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; ...
    • Surfaces of gullies generated by piping process in abandoned fields (south-east of Spain) 

      Romero Díaz, A.; Marín Sanleandro, P.; Sánchez Soriano, A. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The piping process have an important development in old agricultural terraced fields. The abandonment of these fields, together with the lithologies, hydraulic and climatic characteristics favour the quick development of ...
    • The importance of the presence of gullies in the production of sediments in semiarid areas (Murcia, south-east of Spain) 

      Romero Díaz, A.; Martínez Lloris, M.; Alonso Sarría, F.; Belmonte Serrato, F. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The study has shown how the existence of gullies remarkably increases the rates of erosion and, therefore, the volume of sediments that arrives at the dikes of hydrological correction. A consequence of this is the need to ...
    • Waterfall erosion as a main factor in ephemeral gully initiation in a part of Northeastern Iran 

      Sadeghi, S.H.R.; Rangavar, A.S.; Bashari, M.; Abbasi, A.A. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The present study assesses the factors controlling gully formation in a study area located in northeastern Iran. Gully erosion in northeastern Iran is very high because of the high rate of human encroachment and the resulting ...
    • Seepage flow in aquifers with open and closed boundaries 

      Römkens, M.J.M.; Prasad, S.N. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Soil erosion on the bottom of hollows in steppe zone of Ukraine 

      Zubov, A.R.; Zubova, L.G. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Soil erosion, undoubtedly, is one of the main ecological and agricultural problems in the world. Quantity of eroded lands in Ukraine achieves 10.5 millions ha. Annual losses of soil constitutes about 600 millions tons ...
    • Analysis of water erosion using GIS and remote sensing for the management of protected natural environments in the south of the province of Salamanca (Spain) 

      Martínez Graña, A.M.; Goy, J.L.; Zazo, C. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The soil is a natural resource that must be conserved in protected natural areas since it is one of the determinant physical supports in territorial planning because it governs its different uses. Accordingly, specific ...