• Accuracy of methods for field assessment of rill and ephemeral gully erosion 

      Casalí Sarasíbar, Javier Upna; Loizu Maeztu, Javier Upna; Campo Bescós, Miguel Ángel Upna; Santisteban Comino, Luisa María de; Álvarez Mozos, Jesús Upna (Elsevier, 2006)   Artículo / Artikulua  OpenAccess
      To properly assess soil erosion in agricultural areas, it is necessary to determine precisely the volume of ephemeral gullies and rills in the field by using direct measurement procedures. However, little information is ...
    • Assessing hillslope-channel connectivity in an agricultural catchment using rare-earth oxide tracers and random forests models 

      Masselink, Rens Hein; Temme, A. J. A. M.; Giménez Díaz, Rafael Upna; Casalí Sarasíbar, Javier Upna; Keesstra, S. D. (Universidad de la Rioja, 2017)   Artículo / Artikulua  OpenAccess
      Soil erosion from agricultural areas is a large problem because of off-site effects like the rapid filling of reservoirs. To mitigate the problem of sediments from agricultural areas reaching the channel, reservoirs and ...
    • Assessment of soil factors controlling ephemeral gully erosion on agricultural fields 

      Ollobarren Del Barrio, Paul; Campo-Bescós, Miguel Upna; Giménez Díaz, Rafael Upna; Casalí Sarasíbar, Javier Upna (Wiley, 2017)   Artículo / Artikulua  OpenAccess
      The soil factor is crucial in controlling and properly modeling the initiation and development of ephemeral gullies (EGs). Usually, EG initiation has been related to various soil properties (i.e. sealing, critical shear ...
    • Coupling hysteresis analysis with sediment and hydrological connectivity in three agricultural catchments in Navarre, Spain 

      Keesstra, Saskia D.; Davis, Jason; Masselink, Rens Hein; Casalí Sarasíbar, Javier Upna; Peeters, Edwin T.H.M.; Dijksma, Roel (Springer Verlag, 2019)   Artículo / Artikulua
      Purpose: Rain storm events mobilise large proportions of fine sediments in catchment systems. Sediments from agriculturalcatchments are often adsorbed by nutrients, heavy metals and other (in)organic pollutants that may ...
    • Effect of initial step height on headcut development in upland concentrated flows 

      Bennett, S.J.; Casalí Sarasíbar, Javier Upna (American Geophysical UnionWiley, 2001)   Artículo / Artikulua  OpenAccess
      Experiments were conducted to examine the effect of initial step height on growth, development, and upstream migration of headcuts in concentrated flows typical of rills, crop furrows, and ephemeral gullies. In a laboratory ...
    • Evaluación de la producción de sedimentos y calidad de las aguas en cuencas agrarias de Navarra 

      Giménez Díaz, Rafael Upna; Casalí Sarasíbar, Javier Upna; Díez Beregaña, Javier (Universidad de La Rioja, 2012)   Artículo / Artikulua  OpenAccess
      The Government of Navarre (Spain) established a series of experimental watersheds on different sites of its territory in order to assess the impact of the agricultural activities on the environment. Hydrological/meteorological ...
    • Evaluation of 2D models for the prediction of surface depression storage using realistic reference values 

      Giménez Díaz, Rafael Upna; Mezkiritz Barberena, Irantzu; Campo-Bescós, Miguel Upna; Álvarez-Mozos, Jesús Upna; González-Audicana, María Upna; Martínez de Aguirre Escobar, Alejandro Upna; Casalí Sarasíbar, Javier Upna (Wiley, 2016)   Artículo / Artikulua  OpenAccess
      Depression storage (DS) is the maximum storage of precipitation and runoff in the soil surface at a given slope. The DS is determined by soil roughness that in agricultural soils is largely affected by tillage. The direct ...
    • Evaluation of a gully headcut retreat model using multitemporal aerial photographs and digital elevation models 

      Campo Bescós, Miguel Ángel Upna; Flores Cervantes, J. H.; Bras, R. L.; Casalí Sarasíbar, Javier Upna; Giráldez Cervera, Juan Vicente (American Geophysical UnionWiley, 2013)   Artículo / Artikulua  OpenAccess
      A large fraction of soil erosion in temperate climate systems proceeds from gully headcut growth processes. Nevertheless, headcut retreat is not well understood. Few erosion models include gully headcut growth processes, ...
    • Evaluation of TOPLATS on three Mediterranean catchments 

      Loizu Maeztu, Javier Upna; Álvarez Mozos, Jesús Upna; Casalí Sarasíbar, Javier Upna; Goñi Garatea, Mikel Upna (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      Physically based hydrological models are complex tools that provide a complete description of the different processes occurring on a catchment. The TOPMODEL-based Land-Atmosphere Transfer Scheme (TOPLATS) simulates water ...
    • Factors controlling sediment export in a small agricultural watershed in Navarre (Spain) 

      Giménez Díaz, Rafael Upna; Casalí Sarasíbar, Javier Upna; Grande Esteban, Ildefonso Upna; Díez Beregaña, Javier; Campo-Bescós, Miguel Upna; Álvarez-Mozos, Jesús Upna; Goñi Garatea, Mikel Upna (Elsevier, 2012)   Artículo / Artikulua  OpenAccess
      It is recognised that the hydrological and erosion processes in watersheds are very much conditioned by the (inter)action of a number of variables. This paper covers a 15-year period of studying those factors that have ...
    • Gully geometry: what are we measuring? 

      Casalí Sarasíbar, Javier Upna; Giménez Díaz, Rafael Upna; Campo-Bescós, Miguel Ángel Upna (European Geosciences UnionCopernicus Publications, 2015)   Artículo / Artikulua  OpenAccess
      Much of the research on (ephemeral) gully erosion comprises the determination of the geometry of these eroded channels, especially their width and depth. This is not a simple task due to uncertainty generated by the wide ...
    • Hydrological signatures based on event runoff coefficients in rural catchments of the Iberian Peninsula 

      Taguas, Encarnación V.; Nadal-Romero, Estela; Ayuso, José L.; Casalí Sarasíbar, Javier Upna; Cid, Patricio; Dafonte, Jorge; Canatário-Duarte, Antonio; Ferreira, Carla S.S.; Giménez Díaz, Rafael Upna; Giráldez, Juan V.; Gómez-Macpherson, Helena; Gómez, Jose A.; González-Hidalgo, J. Carlos; Lana-Renault, Noemí; Lucía, Ana; Mateos, Luciano; Pérez, Rafael; Rodríguez-Blanco, M. Luz; Schnabel, Susanne; Serrano-Muela, M. Pilar; Taboada-Castro, M. Mercedes; Taboada-Castro, M. Teresa; Zabaleta, Ane (Wolters Kluwer, 2017)   Artículo / Artikulua  OpenAccess
      Hydrological signatures are indices that help to describe the behavior of catchments. These indices can also be used to transfer information from gauged to ungauged catchments. In this study, different approaches were ...
    • Influence of surface roughness spatial variability and temporal dynamics on the retrieval of soil moisture from SAR observations 

      Álvarez Mozos, Jesús Upna; Verhoest, Niko E. C.; Larrañaga, Arantzazu Upna; Casalí Sarasíbar, Javier Upna; González Audicana, María Upna (MDPI, 2009)   Artículo / Artikulua  OpenAccess
      Radar-based surface soil moisture retrieval has been subject of intense research during the last decades. However, several difficulties hamper the operational estimation of soil moisture based on currently available ...
    • On the assimilation set-up of ASCAT soil moisture data for improving streamflow catchment simulation 

      Loizu Maeztu, Javier Upna; Massari, Christian; Álvarez Mozos, Jesús Upna; Tarpanelli, Angelica; Brocca, Luca; Casalí Sarasíbar, Javier Upna (Elsevier, 2018)   Artículo / Artikulua
      Assimilation of remotely sensed surface soil moisture (SSM) data into hydrological catchment models has been identified as a means to improve stream flow simulations, but reported results vary markedly depending on the ...
    • Runoff, nutrients, sediment and salt yields in an irrigated watershed in southern Navarre (Spain) 

      Merchán Elena, Daniel Upna; Casalí Sarasíbar, Javier Upna; Valle de Lersundi, Jokin del; Campo Bescós, Miguel Ángel Upna; Giménez Díaz, Rafael Upna; Preciado, Beatriz; Lafarga, Alberto (Elsevier, 2018)   Artículo / Artikulua
      The environmental impact of irrigated agriculture on water quality was assessed in Landazuria watershed (Navarre, northeast Spain), a 479.5 ha watershed with 53% of irrigated agricultural land. In the framework of a long-term ...