Listar por autor UPNA "Giménez Díaz, Rafael"

Mostrando ítems 1-20 de 24

    • Analysis of surface roughness in agricultural soils using in-situ measurements and remote sensing techniques 

      Martínez de Aguirre Escobar, Alejandro Upna Orcid (2017)   Tesis doctoral / Doktoretza tesia  OpenAccess
      El término rugosidad superficial del suelo es utilizado para describir las variaciones de elevación de la superficie del suelo (micro-relieve). La rugosidad afecta diferentes procesos hidrológicos importantes como el ...

    • Analysis of the hydrological and erosive behavior of agrararian watersheds in Navarre (Spain) by experimentation and modelling 

      Chahor, Youssef Upna Orcid (2017)   Tesis doctoral / Doktoretza tesia  OpenAccess
      Es de general conocimiento que la actividad agraria causa un importante efecto en el medio ambiente. Se hace por tanto necesario conocer este efecto así como proponer medidas para su control. Para ello, la información ...

    • 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 Orcid; Casalí Sarasíbar, Javier Upna Orcid; Keesstra, Saskia 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 ...

    • Assessing soil properties controlling interrill erosion: an empirical approach under Mediterranean conditions 

      Ollobarren del Barrio, Paul Upna; Giménez Díaz, Rafael Upna Orcid; Campo-Bescós, Miguel Upna Orcid (Wiley, 2017)   Artículo / Artikulua  OpenAccess
      Soil erodibility is a complex phenomenon that comprises a number of different soil properties. However, most current (empirical) erodibility indices are based on only a few soil properties. A feasible soil characterization ...

    • Assessment of soil factors controlling ephemeral gully erosion on agricultural fields 

      Ollobarren del Barrio, Paul Upna; Campo-Bescós, Miguel Upna Orcid; Giménez Díaz, Rafael Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid (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 ...

    • Assessment of the main factors affecting the dynamics of nutrients in two rainfed cereal watersheds 

      Hernández García, Iker Upna Orcid; Merchán Elena, Daniel Upna; Aranguren Erice, Itxaso Upna; Casalí Sarasíbar, Javier Upna Orcid; Giménez Díaz, Rafael Upna Orcid; Campo-Bescós, Miguel Upna Orcid; Valle de Lersundi, Jokin del (Elsevier, 2020)   Artículo / Artikulua  OpenAccess
      Nutrient dynamics and factors that control nutrient exports were observed in two watersheds, namely Latxaga and La Tejería, with similar climatic and management characteristics throughout 10 years (2007–2016). Similar ...

    • Avances en el conocimiento de la erosión por flujos concentrados y su óptima evaluación en campo: un enfoque experimental 

      Zubieta Laseca, Elena Upna (2021)   Tesis doctoral / Doktoretza tesia  OpenAccess
      La presente tesis tiene como propósito (i) ampliar el conocimiento sobre la interrelación entre la hidráulica y la morfología de canales de erosión a través de una detallada caracterización y análisis de la macro-rugosidad ...

    • Dissolved solids and suspended sediment dynamics from five small agricultural watersheds in Navarre, Spain: a 10-year study 

      Merchán Elena, Daniel Upna; Luquin Oroz, Eduardo Adrián Upna; Hernández García, Iker Upna Orcid; Campo-Bescós, Miguel Upna Orcid; Giménez Díaz, Rafael Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid; Valle de Lersundi, Jokin del (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      Dissolved solids (DS) and suspended sediment (SS) loads are considered relevant environmental problems. They are related to a wide range of on-site and off-site impacts, such as soil erosion or salinization of water bodies. ...

    • Effect of topography on retreat rate of different gully headcuts in Bardenas Reales area (Navarre, Spain) 

      Campo-Bescós, Miguel Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid; Giménez Díaz, Rafael Upna Orcid (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 ...

    • Evaluación de la producción de sedimentos y calidad de las aguas en cuencas agrarias de Navarra 

      Giménez Díaz, Rafael Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid; Díez Beregaña, Javier Upna (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 Orcid; Mezkiritz Barberena, Irantzu; Campo-Bescós, Miguel Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; González de Audícana Amenábar, María Upna Orcid; Martínez de Aguirre Escobar, Alejandro Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid (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 surface roughness parameters in agricultural soils with different tillage conditions using a laser profile meter 

      Martínez de Aguirre Escobar, Alejandro Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Giménez Díaz, Rafael Upna Orcid (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      Surface roughness crucially affects the hydrological and erosive behaviours of soils. In agricultural areas surface roughness is directly related to tillage, whose action strongly affects the key physical properties of ...

    • Evaluation of terrestrial laser scanner and structure from motion photogrammetry techniques for quantifying soil surface roughness parameters over agricultural soils 

      Martínez de Aguirre Escobar, Alejandro Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Milenković, Milutin; Pfeifer, Norbert; Giménez Díaz, Rafael Upna Orcid (Wiley, 2020)   Artículo / Artikulua  OpenAccess
      The surface roughness of agricultural soils is mainly related to the type of tillage performed, typically consisting of oriented and random components. Traditionally, soil surface roughness (SSR) characterization has been ...

    • Factors controlling sediment export in a small agricultural watershed in Navarre (Spain) 

      Giménez Díaz, Rafael Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid; Grande Esteban, Ildefonso Upna; Díez Beregaña, Javier Upna; Campo-Bescós, Miguel Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Goñi Garatea, Mikel Upna Orcid (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 Orcid; Giménez Díaz, Rafael Upna Orcid; Campo-Bescós, Miguel Upna Orcid (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 effects of the sediments deposited off a hillslope affected by rill erosion: project outlines and preliminary results 

      Giménez Díaz, Rafael Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid; Campo-Bescós, Miguel Upna Orcid (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 ...

    • 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 Orcid; Cid, Patricio; Dafonte, Jorge; Canatário-Duarte, Antonio; Ferreira, Carla S.S.; Giménez Díaz, Rafael Upna Orcid; Giráldez Cervera, Juan Vicente; 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. Mercedes; 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 ...

    • Implications of recent experimental findings for rill erosion modeling 

      Govers, G.; Giménez Díaz, Rafael Upna Orcid; Van Oost, K. (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 2007)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      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 ...

    • Influence of surface roughness sample size for C-band SAR backscatter applications on agricultural soils 

      Martínez de Aguirre Escobar, Alejandro Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Lievens, Hans; Verhoest, Niko E. C.; Giménez Díaz, Rafael Upna Orcid (IEEE, 2017)   Artículo / Artikulua  OpenAccess
      Soil surface roughness determines the backscatter coefficient observed by radar sensors. The objective of this letter was to determine the surface roughness sample size required in synthetic aperture radar applications and ...

    • On the influence of spatial resolution in soil surface roughness characterization using Tls and Sfm techniques 

      Martínez de Aguirre Escobar, Alejandro Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Giménez Díaz, Rafael Upna Orcid; Milenković, Milutin; Pfeifer, Norbert (IEEE, 2018)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Soil surface roughness strongly affects the scattering of microwaves and determines the backscattering coefficient observed by SAR (Synthetic Aperture Radar) sensors. The aim of this study is to analyze the influence of ...
      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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