נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
A simple accurate method to predict time of ponding under variable intensity rainfall
Year:
2007
Source of publication :
Water Resources Research
Authors :
אסולין, שמואל
;
.
Volume :
43
Co-Authors:
Assouline, S., Institute of Environmental Science and Technology, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel, Institute of Soil, Water and Environmental Sciences, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Selker, J.S., Institute of Environmental Science and Technology, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR, United States, Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR 97331, United States
Parlange, J.-Y., Institute of Environmental Science and Technology, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, United States, Department of Biological and Environmental Engineering, Riley-Robb Hall, Cornell University, Ithaca, NY 14853, United States
Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:
[1] The prediction of the time to ponding following commencement of rainfall is fundamental to hydrologic prediction of flood, erosion, and infiltration. Most of the studies to date have focused on prediction of ponding resulting from simple rainfall patterns. This approach was suitable to rainfall reported as average values over intervals of up to a day but does not take advantage of knowledge of the complex patterns of actual rainfall now commonly recorded electronically. A straightforward approach to include the instantaneous rainfall record in the prediction of ponding time and excess rainfall using only the infiltration capacity curve is presented. This method is tested against a numerical solution of the Richards equation on the basis of an actual rainfall record. The predicted time to ponding showed mean error ≤7% for a broad range of soils, with and without surface sealing. In contrast, the standard predictions had average errors of 87%, and worst-case errors exceeding a factor of 10. In addition to errors intrinsic in the modeling framework itself, errors that arise from averaging actual rainfall records over reporting intervals were evaluated. Averaging actual rainfall records observed in Israel over periods of as little as 5 min significantly reduced predicted runoff (75% for the sealed sandy loam and 46% for the silty clay loam), while hourly averaging gave complete lack of prediction of ponding in some of the cases. Copyright 2007 by the American Geophysical Union.
Note:

Article number W03426

Related Files :
Capacity curve
hydrology
Israel
rain
Richards equation
runoff
soil surveys
עוד תגיות
תוכן קשור
More details
DOI :
10.1029/2006WR005138
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31914
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:06
Scientific Publication
A simple accurate method to predict time of ponding under variable intensity rainfall
43
Assouline, S., Institute of Environmental Science and Technology, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel, Institute of Soil, Water and Environmental Sciences, ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Selker, J.S., Institute of Environmental Science and Technology, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR, United States, Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR 97331, United States
Parlange, J.-Y., Institute of Environmental Science and Technology, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, United States, Department of Biological and Environmental Engineering, Riley-Robb Hall, Cornell University, Ithaca, NY 14853, United States
A simple accurate method to predict time of ponding under variable intensity rainfall
[1] The prediction of the time to ponding following commencement of rainfall is fundamental to hydrologic prediction of flood, erosion, and infiltration. Most of the studies to date have focused on prediction of ponding resulting from simple rainfall patterns. This approach was suitable to rainfall reported as average values over intervals of up to a day but does not take advantage of knowledge of the complex patterns of actual rainfall now commonly recorded electronically. A straightforward approach to include the instantaneous rainfall record in the prediction of ponding time and excess rainfall using only the infiltration capacity curve is presented. This method is tested against a numerical solution of the Richards equation on the basis of an actual rainfall record. The predicted time to ponding showed mean error ≤7% for a broad range of soils, with and without surface sealing. In contrast, the standard predictions had average errors of 87%, and worst-case errors exceeding a factor of 10. In addition to errors intrinsic in the modeling framework itself, errors that arise from averaging actual rainfall records over reporting intervals were evaluated. Averaging actual rainfall records observed in Israel over periods of as little as 5 min significantly reduced predicted runoff (75% for the sealed sandy loam and 46% for the silty clay loam), while hourly averaging gave complete lack of prediction of ponding in some of the cases. Copyright 2007 by the American Geophysical Union.

Article number W03426

Scientific Publication
You may also be interested in