Observatorio de I+D+i UPM

Memorias de investigación
Ponencias en congresos:
Soil connectivity at different bulk densities
Año:2008
Áreas de investigación
  • Matemáticas,
  • Química,
  • Agricultura
Datos
Descripción
With the advent of modern non-destructive tomography techniques there have been many attempts made to analyze pore space features mainly concentrating on the visualization of soil structure. One of these quantifications can be the spectral dimension (d) to estimate the connectivity of the pore space. Aggregates of an arable sandy loam were packed into polypropylene cylinders: 6 cm diameter and 5 cm high. Several bulk densities were then obtained: 1.2, 1.4 and 1.6 Mgm−3. At each bulk density the air-filled pore volume was 0.17. The soil samples were imaged using an mSIMCT at 155keV and 25 mA. An aluminium filter (0.25 mm) was applied to reduce beam hardening and later several corrections where applied during reconstruction. All 3D volumes were converted using VGStudioMax v.1.2.1 into 260x260x525 image stacks with voxel-thick slices. In order to described porosity connectivity a threshold value was applied based on the analysis of the histogram region corresponding to 5 voxels. The spectral dimension was estimated for each of the binary image corresponding to each bulk density.
Internacional
Si
Nombre congreso
European Geosciences Union
Tipo de participación
960
Lugar del congreso
Viena (Austria)
Revisores
ISBN o ISSN
1029-7006
DOI
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Título de las actas
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: D Grinev (SIMBIOS, Univ. of Abertay, Scotland, U.K)
  • Autor: J Crawford (SIMBIOS, Univ. of Abertay, Scotland, U.K)
  • Autor: Ana Maria Tarquis Alfonso (UPM)
  • Participante: W Otten (SIMBIOS, Univ. of Abertay, Scotland, U.K)
  • Autor: I Young (SIMBIOS, Univ. of Abertay, Scotland, U.K)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Automatización en Señal y Comunicaciones (GASC)
  • Departamento: Matemática Aplicada a la Ingeniería Agronómica
  • Centro o Instituto I+D+i: Centro de Estudios e Investigación para la Gestión de Riesgos Agrarios Medioambientales (CEIGRAM)
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