Water Balance Modeling of Earthen Final CoversSource: Journal of Geotechnical and Geoenvironmental Engineering:;1997:;Volume ( 123 ):;issue: 008DOI: 10.1061/(ASCE)1090-0241(1997)123:8(744)Publisher: American Society of Civil Engineers
Abstract: Hydrologic data measured from two earthen final cover test sections constructed on actual landfill final covers are presented with predictions made using two water balance models (HELP and UNSAT-H). Both test sections were constructed as traditional resistive barriers comprised of a compacted fine-grained layer overlain by a vegetated surface layer. Hydrologic and meteorological data including precipitation, air temperature, solar radiation, relative humidity, wind speed, and wind direction were collected at each test section for three years. Percolation, overland flow, and soil water content were monitored continuously. Predictions of the water balance were made using the water balance models HELP and UNSAT-H. In general, HELP overpredicted percolation, sometimes significantly, and UNSAT-H slightly underpredicted percolation. However, both models captured the seasonal variations in overland flow, evapotranspiration, soil water storage, and percolation. UNSAT-H captured these variations more accurately than HELP.
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contributor author | Milind V. Khire | |
contributor author | Craig H. Benson | |
contributor author | Peter J. Bosscher | |
date accessioned | 2017-05-08T21:26:11Z | |
date available | 2017-05-08T21:26:11Z | |
date copyright | August 1997 | |
date issued | 1997 | |
identifier other | %28asce%291090-0241%281997%29123%3A8%28744%29.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/51390 | |
description abstract | Hydrologic data measured from two earthen final cover test sections constructed on actual landfill final covers are presented with predictions made using two water balance models (HELP and UNSAT-H). Both test sections were constructed as traditional resistive barriers comprised of a compacted fine-grained layer overlain by a vegetated surface layer. Hydrologic and meteorological data including precipitation, air temperature, solar radiation, relative humidity, wind speed, and wind direction were collected at each test section for three years. Percolation, overland flow, and soil water content were monitored continuously. Predictions of the water balance were made using the water balance models HELP and UNSAT-H. In general, HELP overpredicted percolation, sometimes significantly, and UNSAT-H slightly underpredicted percolation. However, both models captured the seasonal variations in overland flow, evapotranspiration, soil water storage, and percolation. UNSAT-H captured these variations more accurately than HELP. | |
publisher | American Society of Civil Engineers | |
title | Water Balance Modeling of Earthen Final Covers | |
type | Journal Paper | |
journal volume | 123 | |
journal issue | 8 | |
journal title | Journal of Geotechnical and Geoenvironmental Engineering | |
identifier doi | 10.1061/(ASCE)1090-0241(1997)123:8(744) | |
tree | Journal of Geotechnical and Geoenvironmental Engineering:;1997:;Volume ( 123 ):;issue: 008 | |
contenttype | Fulltext |