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    • 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 ...

    • Evaluación multitemporal de métodos de corrección topográfica mediante el uso de imágenes sintéticas multiespectrales 

      Sola Torralba, Ion Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; González de Audícana Amenábar, María Upna Orcid; Torres Escribano, José Luis Upna Orcid (Asociación Española de Teledetección, 2014)   Artículo / Artikulua  OpenAccess
      En este trabajo se presentan los resultados de la evaluación multitemporal de varios métodos de corrección topográfica (TOC), cuya bondad se determina de forma cuantitativa mediante el uso de imágenes sintéticas multiespectrales ...

    • 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 a gully headcut retreat model using multitemporal aerial photographs and digital elevation models 

      Campo-Bescós, Miguel Upna Orcid; Flores Cervantes, J. H.; Bras, R. L.; Casalí Sarasíbar, Javier Upna Orcid; 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 mechanical tomato harvesting using wireless sensors 

      Arazuri Garín, Silvia Upna Orcid; Arana Navarro, Ignacio Upna; Jarén Ceballos, Carmen Upna Orcid (MDPI, 2010)   Artículo / Artikulua  OpenAccess
      The harvesting of processing tomatoes is fully mechanised and it is well known that during harvest, fruits are subjected to mechanical stress causing physical injuries, including skin punctures, pulp and cell rupture. Some ...

    • Evaluation of risk factors in fatal accidents in agriculture 

      Arana Navarro, Ignacio Upna; Mangado Ederra, Jesús Upna; Arnal Atarés, Pedro Upna; Arazuri Garín, Silvia Upna Orcid; Alfaro López, José Ramón Upna; Jarén Ceballos, Carmen Upna Orcid (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2010)   Artículo / Artikulua  OpenAccess
      En el ámbito agrario se producen anualmente muchos accidentes mortales, no siendo todos ellos registrados oficialmente como accidentes laborales. El objetivo de esta investigación es comparar los datos reales y oficiales ...

    • 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 TOPLATS on three Mediterranean catchments 

      Loizu Maeztu, Javier Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Casalí Sarasíbar, Javier Upna Orcid; Goñi Garatea, Mikel Upna Orcid (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 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 ...

    • Generation of the site-adapted clearest-sky year of direct normal irradiance for solar concentrating technologies 

      García Ruiz, Ignacio Upna Orcid; Royo Romeo, Alberto; Torres Escribano, José Luis Upna Orcid (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      Concentrating photovoltaic and thermoelectric solar facilities base their operation on collecting the direct component of solar radiation. Given that the direct beam that reaches the Earth's surface varies greatly in ...

    • 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 ...

    • Hallazgo de treintaiséis nuevas estelas de Navarra 

      Ukar Muruzábal, Jesús Upna (Gobierno de Navarra. Institución Príncipe de Viana, 1993)   Artículo / Artikulua  OpenAccess
      El presente estudio describe el hallazgo de 31 nuevas estelas de Navarra.

    • 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 ...

    • Influence of surface roughness measurement scale on radar backscattering in different agricultural soils 

      Martínez de Aguirre Escobar, Alejandro Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid; Lievens, Hans; Verhoest, Niko E. C. (IEEE, 2017)   Artículo / Artikulua  OpenAccess
      Soil surface roughness strongly affects the scattering of microwaves on the soil surface and determines the backscattering coefficient (σ 0 ) observed by radar sensors. Previous studies have shown important scale issues ...

    • 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 ...

    • Influence of surface roughness spatial variability and temporal dynamics on the retrieval of soil moisture from SAR observations 

      Álvarez-Mozos, Jesús Upna Orcid; Verhoest, Niko E. C.; Larrañaga, Arantzazu Upna; Casalí Sarasíbar, Javier Upna Orcid; González de Audícana Amenábar, María Upna Orcid (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 ...

    • Magnesium oxide as alternative binder for unfired clay bricks manufacturing 

      Espuelas Zuazu, Sandra Upna Orcid; Omer, Joshua; Marcelino Sádaba, Sara Upna Orcid; Echeverría, Angel María Upna Orcid; Seco Meneses, Andrés Upna Orcid (Elsevier, 2017)   Artículo / Artikulua  OpenAccess
      Replacement of fired bricks by unfired ones could be an effective way to reduce the building industryenvironmental footprint: Their manufacture not only requires less energy and natural resources but alsogenerates less waste. ...

    • Mathematical models to describe the volumetric shrinkage rate of red beans during drying 

      Correa, P. C.; Resende, O.; Arazuri Garín, Silvia Upna Orcid; Jarén Ceballos, Carmen Upna Orcid; Oliveira, Gabriel H. H. de (Associação Brasileira de Engenharia Agrícola, 2011)   Artículo / Artikulua  OpenAccess
      The present study aimed to determine the volumetric shrinkage rate of bean (Phaseolus vulgaris L.) seeds during air-drying under different conditions of air, temperature and relative humidity, and to adjust several ...

    • Monitoring water vapour with GNSS during a heavy rainfall event in the Spanish Mediterranean area 

      Priego, E.; Jones, J.; Porres, M. J.; Seco Meneses, Andrés Upna Orcid (Taylor & Francis, 2017)   Artículo / Artikulua  OpenAccess
      The Spanish Mediterranean area is periodically affected by torrential rainfall events during autumn. In September 2012, one of these episodes took place with up to 50 mm of rain in a 1-hour period and with more than 300 ...

    • Multi-criteria evaluation of topographic correction methods 

      Sola Torralba, Ion Upna Orcid; González de Audícana Amenábar, María Upna Orcid; Álvarez-Mozos, Jesús Upna Orcid (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      In the last decades, several topographic correction methods (TOC) have been proposed, but there is not an agreement on the best method. Furthermore, different evaluation criteria have been used in the past, and there is ...
      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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