Field-scale variation of preferential flow as indicated from dye coverage
Öhrström, Pernilla LU ; Persson, Magnus LU ; Albergel, J ; Zante, P ; Nasri, S ; Berndtsson, Ronny LU
and Olsson, J
(2002)
In Journal of Hydrology
257(1-4).
p.164-173
- Abstract
- Field investigations were performed in semiarid Tunisia to investigate spatial variability of preferential pathways in catchment- and plot-scales. A rainfall simulator with dye was used to simulate effects of a 20-year rainstorm. After infiltration into six one-meter square plots, vertical 2.5-cm thick soil sections were excavated, and dye penetrations were photographed, The results show that different catchment physiographic areas (nose, slope, and hollow) displayed significantly different responses to the infiltrating dye. Nose and hollow areas exhibited larger susceptibility to preferential flow. Here. infiltrated dye was transported to greater depths. Slopes had fewer deep cracks and fissures. The dye distribution within each plot was... (More)
- Field investigations were performed in semiarid Tunisia to investigate spatial variability of preferential pathways in catchment- and plot-scales. A rainfall simulator with dye was used to simulate effects of a 20-year rainstorm. After infiltration into six one-meter square plots, vertical 2.5-cm thick soil sections were excavated, and dye penetrations were photographed, The results show that different catchment physiographic areas (nose, slope, and hollow) displayed significantly different responses to the infiltrating dye. Nose and hollow areas exhibited larger susceptibility to preferential flow. Here. infiltrated dye was transported to greater depths. Slopes had fewer deep cracks and fissures. The dye distribution within each plot was also investigated. The variability of the dye patterns increased with scale. Cross-correlations and power spectrum analyses indicated that the preferential pathways were randomly distributed. The power-law behavior of the dye patterns' spectral density suggested scale invariance and the possibility of random cascade modeling. (C) 2002 Elsevier Science B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/345848
- author
- Öhrström, Pernilla
LU
; Persson, Magnus
LU
; Albergel, J
; Zante, P
; Nasri, S
; Berndtsson, Ronny
LU
and Olsson, J
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- analysis, spectral, topography, spatial variation, dye tracers, preferential flow
- in
- Journal of Hydrology
- volume
- 257
- issue
- 1-4
- pages
- 164 - 173
- publisher
- Elsevier
- external identifiers
-
- wos:000173257200010
- scopus:0036467443
- ISSN
- 0022-1694
- DOI
- 10.1016/S0022-1694(01)00537-6
- language
- English
- LU publication?
- yes
- id
- a479af79-be07-44ae-a339-ce0e809e7cca (old id 345848)
- date added to LUP
- 2016-04-01 16:55:25
- date last changed
- 2022-10-06 03:10:23
@article{a479af79-be07-44ae-a339-ce0e809e7cca,
abstract = {{Field investigations were performed in semiarid Tunisia to investigate spatial variability of preferential pathways in catchment- and plot-scales. A rainfall simulator with dye was used to simulate effects of a 20-year rainstorm. After infiltration into six one-meter square plots, vertical 2.5-cm thick soil sections were excavated, and dye penetrations were photographed, The results show that different catchment physiographic areas (nose, slope, and hollow) displayed significantly different responses to the infiltrating dye. Nose and hollow areas exhibited larger susceptibility to preferential flow. Here. infiltrated dye was transported to greater depths. Slopes had fewer deep cracks and fissures. The dye distribution within each plot was also investigated. The variability of the dye patterns increased with scale. Cross-correlations and power spectrum analyses indicated that the preferential pathways were randomly distributed. The power-law behavior of the dye patterns' spectral density suggested scale invariance and the possibility of random cascade modeling. (C) 2002 Elsevier Science B.V. All rights reserved.}},
author = {{Öhrström, Pernilla and Persson, Magnus and Albergel, J and Zante, P and Nasri, S and Berndtsson, Ronny and Olsson, J}},
issn = {{0022-1694}},
keywords = {{analysis; spectral; topography; spatial variation; dye tracers; preferential flow}},
language = {{eng}},
number = {{1-4}},
pages = {{164--173}},
publisher = {{Elsevier}},
series = {{Journal of Hydrology}},
title = {{Field-scale variation of preferential flow as indicated from dye coverage}},
url = {{http://dx.doi.org/10.1016/S0022-1694(01)00537-6}},
doi = {{10.1016/S0022-1694(01)00537-6}},
volume = {{257}},
year = {{2002}},
}