Now showing items 1-20 of 124

    • Gully development in agricultural fields: insights from catchment scale analysis 

      Markovitch, H.; Svoray, T. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The aim of this paper is to study the combined effect of human-induced activity and the physical environmental conditions on gully development in a small agricultural catchment in Northern Israel. More specifically the ...
    • A comparison of anthropogenic and long-term soil erosion on banks peninsula using 137Cs and kawakawa tephra 

      Lutter, F.S.; Almond, P.C.; Florineth, F. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 

      Kirkby, M.J. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The paper reviews general conditions for initiation and maintenance of gullies.
    • Gullies on mars: the debate about formative processes (keynote) 

      Howard, A.D. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The discovery of very young gully systems on Mars has occasioned a lively debate about the processes and materials involved in their formation (Malin and Edgett, 2000). The strong interest in these features results because ...
    • Agricultural land use, piping and gullies activity in the Huelva lower valley (Saragossa, Spain) 

      Echeverría, M.T.; Ibarra, P.; Pérez Cabello, F. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 as ...
    • Effects of slope processes and management in gullying 

      Desir, G.; Marín, C. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Most erosion studies have been typically done in rill and interrill areas because the complexity of gullies and their large size have made their study very difficult. Morgan (1979) and Hudson (1985) define gullies as water ...
    • Evaluating airborne laser scanning for gully erosion detection and baseline mapping in the Fitzroy catchment, QLD, Australia 

      Eustace, A.H.; Witte, C.; Carey, B.W. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 Upna; Casalí Sarasíbar, Javier Upna; Campo-Bescós, Miguel Upna (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Gully erosion on cinder cones of Tenerife (Canary Islands, Spain) 

      Dóniz, J.; Romero, C. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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? 

      Gordon, L.M.; Bennett, S.J.; Alonso, C.V.; Bingner, R.L. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 

      Gómez Gutiérrez, Á.; Schnabel, Susanne; Felicísimo, A. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 

      Gordon, L.M.; Bennett, S.J.; Wells, R.; Alonso, C.V. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 

      Dotterweich M.; Jared David, M. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Improving the structural stability of cropped soils in Olite (Navarre) using conservation tillage to reduce water erosion 

      Río Lahidalga, Iker del; Fernández Ugalde, Oihane Upna; Imaz Gurruchaga, María José Upna; Enrique Martín, Alberto Upna; Bescansa Miquel, Paloma Upna (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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) 

      Conesa García, C.; Pérez Cutillas, P.; García Lorenzo, R. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Effect of topography on retreat rate of different gully headcuts in Bardenas Reales area (Navarre, Spain) 

      Campo-Bescós, Miguel Upna; Álvarez-Mozos, Jesús Upna; Casalí Sarasíbar, Javier Upna; Giménez Díaz, Rafael Upna (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • AnnAGNPS ephemeral gully erosion simulation technology 

      Bingner, R.L.; Theurer, F.D.; Gordon, L.M.; Bennett, S.J.; Parker, C.; Thorne, C.; Alonso, C.V. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Tillage-induced ephemeral gully erosion has been shown to be a significant and sometimes dominant source of sediment within a watershed. An approach has been developed within AnnAGNPS to assess the impact of conservation ...
    • Runoff and sediment supply from small gullied and ungullied basins in a semi-arid grazed environment 

      Chocron, M.; Laronne, J.B.; Alexandrov, Y. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...
    • Alluvial gully erosion: a landscape denudation process in Northern Australia 

      Brooks, A.P.; Shellberg, J.G.; Spencer, J.; Knight, J. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Recent aerial reconnaissance surveys and subsequent remote sensing mapping of Australia’s tropical rivers identified alluvial gully erosion as a key sediment source (Brooks et al. 2007; Knight et al. 2007). Gully erosion ...
    • Impact of root architecture, soil and flow characteristics on the erosion-reducing potential of roots during concentrated flow 

      Baets, S. de; Poesen, J.; Knapen, A. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this study, the effects of roots of different root morphologies (tap roots vs. fine-branched roots) on concentrated flow erosion rates are studied experimentally. The impact of soil type, soil moisture conditions ...