 |
| Titel |
Representative elementary area for multifractal analysis of soil porosity using entropy dimension |
| VerfasserIn |
F. San José Martínez, F. J. Caniego, C. García-Gutiérrez, R. Espejo |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1023-5809
|
| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 14, no. 4 ; Nr. 14, no. 4 (2007-08-14), S.503-511 |
| Datensatznummer |
250012246
|
| Publikation (Nr.) |
 copernicus.org/npg-14-503-2007.pdf |
|
|
|
|
|
| Zusammenfassung |
| The notion of representative elementary area (REA) developed to address
heterogeneity and scale problems in quantitative soil pedology comes from
the notion of representative elementary volume of fluid dynamics in porous
media. The REA allows the identification of the minimum area of a soil block
section that is required to represent the pedofeature of interest based on
its distribution in soil space. In this paper eight samples were imaged with
two different techniques: the confocal microscope and the conventional film
camera. These techniques provided information about pore sizes between 3.62 μm
and 161.98 μm, and between 39.72 μm and 1776.34 μm,
respectively. Sixteen of the resulting digital images were then analyzed to
investigate the representative elementary area of the multifractal patterns
of the spatial distribution of voids related to the micro and macroporosity
by means of the entropy dimension. Our results permit the location of the
REA region over the domain of the microstructures rendered by the analysis
of the microscope images. They also suggest that this region seemingly spans
scales of the macrostructures as revealed by the analysis of the camera
pictures. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|