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Influence of surface roughness spatial variability and temporal dynamics on the retrieval of soil moisture from SAR observations
(MDPI, 2009)
Artículo / Artikulua,
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 soil roughness parameterization problem in soil moisture retrieval of bare surfaces from synthetic aperture radar
(MDPI, 2008)
Artículo / Artikulua,
Synthetic Aperture Radar has shown its large potential for retrieving soil moisture maps at regional scales. However, since the backscattered signal is determined by several surface characteristics, the retrieval of soil ...
Evaluation of mechanical tomato harvesting using wireless sensors
(MDPI, 2010)
Artículo / Artikulua,
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
(Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2010)
Artículo / Artikulua,
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 ...
Effective roughness modelling as a tool for soil moisture retrieval from C-and L-band SAR
(Copernicus Publications, 2011)
Artículo / Artikulua,
Soil moisture retrieval from Synthetic Aperture Radar (SAR) using state-of-the-art backscatter models is not fully operational at present, mainly due to difficulties involved in the parameterisation of soil surface ...
Error in radar-derived soil moisture due to roughness parameterization: an analysis based on synthetical surface profiles
(MDPI, 2009)
Artículo / Artikulua,
In the past decades, many studies on soil moisture retrieval from SAR demonstrated a poor correlation between the top layer soil moisture content and observed backscatter coefficients, which mainly has been attributed ...
Accuracy of methods for field assessment of rill and ephemeral gully erosion
(Elsevier, 2006)
Artículo / Artikulua,
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 ...
Ayer y hoy de la estela discoidea en Navarra
(Gobierno de Navarra. Institución Príncipe de Viana, 1994)
Artículo / Artikulua,
El presente trabajo analiza y cataloga las estelas discoideales en Navarra.
Hallazgo de treintaiséis nuevas estelas de Navarra
(Gobierno de Navarra. Institución Príncipe de Viana, 1993)
Artículo / Artikulua,
El presente estudio describe el hallazgo de 31 nuevas estelas de Navarra.
Tipología, tipometría y técnicas escultóricas utilizadas en las estelas de Navarra
(Gobierno de Navarra. Institución Príncipe de Viana, 1993)
Artículo / Artikulua,
Este trabajo pretende diferenciar formalmente una serie de modelos de estelas discoideas, en base a la estructura del disco, del pie, del canto y de las relaciones entre ellos.