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פותח על ידי קלירמאש פתרונות בע"מ -
Effect of rainfall-induced soil seals on the soil water regime: Drying interval and subsequent wetting
Year:
2003
Source of publication :
Transport in Porous Media
Authors :
אסולין, שמואל
;
.
Volume :
53
Co-Authors:
Assouline, S., The Inst. of Soil Water/Environ.Sci., A.R.O., P.O. Box 6, Bet-Dagan 50250, Israel
Mualem, Y., The Seagram Ctr. for Soil/Water Sci., The Faculty of Agriculture, The Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Facilitators :
From page:
75
To page:
94
(
Total pages:
20
)
Abstract:
The effects of rainfall-induced soil seals on drying processes and on infiltration following drying intervals are simulated for two different soils, a loam and a sandy loam. The simulated drying processes include water content redistribution without evaporation and under a constant evaporation rate of 5 mm day-1. During evaporation, the water content at the seal surface decreases rapidly. A high water content gradient develops within the seal, which increases along the drying interval. It indicates that, at least during the first hours of drying, the seal layer fulfilled all the evaporation demand and therefore dries faster that an unsealed soil where the evaporation is supplied by a much deeper zone of the soil profile. This phenomenon is more accentuated in the loam than in the sandy loam soil. Considering the subsequent infiltration curves during rainfall following different drying intervals, the ponding time and the post-ponding infiltration rates increase when the antecedent drying period is longer, but no significant effect on the final infiltration is found following drying intervals of few days. Also, the water content at the sealed soil surface before rainfall seems to play a major role on infiltration. Very close infiltration curves were obtained after different drying intervals that ended with similar surface water content.
Note:
Related Files :
computer simulation
drying
Porous materials
rain
runoff
Soil crust
soil seal
Soil seals
Soil testing
Wetting
wetting-drying cycle
עוד תגיות
תוכן קשור
More details
DOI :
10.1023/A:1023583808812
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
20498
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:37
Scientific Publication
Effect of rainfall-induced soil seals on the soil water regime: Drying interval and subsequent wetting
53
Assouline, S., The Inst. of Soil Water/Environ.Sci., A.R.O., P.O. Box 6, Bet-Dagan 50250, Israel
Mualem, Y., The Seagram Ctr. for Soil/Water Sci., The Faculty of Agriculture, The Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Effect of rainfall-induced soil seals on the soil water regime: Drying interval and subsequent wetting
The effects of rainfall-induced soil seals on drying processes and on infiltration following drying intervals are simulated for two different soils, a loam and a sandy loam. The simulated drying processes include water content redistribution without evaporation and under a constant evaporation rate of 5 mm day-1. During evaporation, the water content at the seal surface decreases rapidly. A high water content gradient develops within the seal, which increases along the drying interval. It indicates that, at least during the first hours of drying, the seal layer fulfilled all the evaporation demand and therefore dries faster that an unsealed soil where the evaporation is supplied by a much deeper zone of the soil profile. This phenomenon is more accentuated in the loam than in the sandy loam soil. Considering the subsequent infiltration curves during rainfall following different drying intervals, the ponding time and the post-ponding infiltration rates increase when the antecedent drying period is longer, but no significant effect on the final infiltration is found following drying intervals of few days. Also, the water content at the sealed soil surface before rainfall seems to play a major role on infiltration. Very close infiltration curves were obtained after different drying intervals that ended with similar surface water content.
Scientific Publication
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