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    Water Balance Modeling of Earthen Final Covers

    Source: Journal of Geotechnical and Geoenvironmental Engineering:;1997:;Volume ( 123 ):;issue: 008
    Author:
    Milind V. Khire
    ,
    Craig H. Benson
    ,
    Peter J. Bosscher
    DOI: 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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      Water Balance Modeling of Earthen Final Covers

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    http://yetl.yabesh.ir/yetl1/handle/yetl/51390
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    • Journal of Geotechnical and Geoenvironmental Engineering

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    contributor authorMilind V. Khire
    contributor authorCraig H. Benson
    contributor authorPeter J. Bosscher
    date accessioned2017-05-08T21:26:11Z
    date available2017-05-08T21:26:11Z
    date copyrightAugust 1997
    date issued1997
    identifier other%28asce%291090-0241%281997%29123%3A8%28744%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/51390
    description abstractHydrologic 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.
    publisherAmerican Society of Civil Engineers
    titleWater Balance Modeling of Earthen Final Covers
    typeJournal Paper
    journal volume123
    journal issue8
    journal titleJournal of Geotechnical and Geoenvironmental Engineering
    identifier doi10.1061/(ASCE)1090-0241(1997)123:8(744)
    treeJournal of Geotechnical and Geoenvironmental Engineering:;1997:;Volume ( 123 ):;issue: 008
    contenttypeFulltext
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