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פותח על ידי קלירמאש פתרונות בע"מ -
Dual water flow pattern in the unsaturated zone under a gypsum‐amended soil
Year:
1990
Source of publication :
European Journal of Soil Science
Authors :
נדלר, אריה
;
.
Volume :
41
Co-Authors:

M. Magaritz and H. Gvirtzman - The Weizmann Institute of Science, Rehovot, Israel

Facilitators :
From page:
177
To page:
187
(
Total pages:
11
)
Abstract:

Sediment samples were obtained from boreholes down to c. 20 m in a gypsum‐treated, saline‐water irrigated soil and from nearby uncultivated fields at two locations (Nir Oz and Nahal Oz). Measurements of tritium concentrations in the soil solution enabled the determination of water flow rates in the unsaturated zone. Two types of flow, fast and slow, were identified in the profiles. The slow component, the ‘piston‐flow type’ in the sandy loess section in Nir Oz and in the clayey loess section of Nahal Oz, had a vertical velocity of 0.16 and 0.23 m a−1, respectively. The faster component typically transported the solution through fractures and other preferred paths. The percentage of the slow component in the sandy and in the clayey loess was 40% and 60% respectively. A previous prediction of delayed transport of salts was verified and is related to the interaction between chemical composition of irrigation water and the agro technical practices of gypsum application.

Note:
Related Files :
Gypsum
Nahal Oz
Nir Oz
soil
Soils
Unsaturated zone
vadose zone
water
water flow
עוד תגיות
תוכן קשור
More details
DOI :
https://doi.org/10.1111/j.1365-2389.1990.tb00055.x
Article number:
0
Affiliations:
Database:
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
50600
Last updated date:
02/03/2022 17:27
Creation date:
30/09/2020 10:57
Scientific Publication
Dual water flow pattern in the unsaturated zone under a gypsum‐amended soil
41

M. Magaritz and H. Gvirtzman - The Weizmann Institute of Science, Rehovot, Israel

Dual water flow pattern in the unsaturated zone under a gypsum‐amended soil

Sediment samples were obtained from boreholes down to c. 20 m in a gypsum‐treated, saline‐water irrigated soil and from nearby uncultivated fields at two locations (Nir Oz and Nahal Oz). Measurements of tritium concentrations in the soil solution enabled the determination of water flow rates in the unsaturated zone. Two types of flow, fast and slow, were identified in the profiles. The slow component, the ‘piston‐flow type’ in the sandy loess section in Nir Oz and in the clayey loess section of Nahal Oz, had a vertical velocity of 0.16 and 0.23 m a−1, respectively. The faster component typically transported the solution through fractures and other preferred paths. The percentage of the slow component in the sandy and in the clayey loess was 40% and 60% respectively. A previous prediction of delayed transport of salts was verified and is related to the interaction between chemical composition of irrigation water and the agro technical practices of gypsum application.

Scientific Publication
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