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    Parsimonious Mathematical Characterization of Channel Shape and Size

    Source: Journal of Hydrologic Engineering:;2017:;Volume ( 022 ):;issue: 012
    Author:
    Glenn E. Moglen
    DOI: 10.1061/(ASCE)HE.1943-5584.0001588
    Publisher: American Society of Civil Engineers
    Abstract: This work has two purposes: (1) starting from the classic hydraulic geometry formulation, present a mathematically parsimonious, two-parameter, characterization of channel shape and size; and (2) analytically quantify cross-sectional area, top width, average depth, critical energy, and bank-full discharge at critical conditions as a function of these two parameters. The matter of channel asymmetry is examined, and a metric for quantifying asymmetry is presented. The robustness of this characterization is demonstrated in an application to several observed channels in Maryland and Delaware across three physiographic regions: Allegheny plateau, Piedmont, and coastal plain. Values of the shape parameter, u, ranged from 1.6 to 4.3, and asymmetry measures ranged from 0.09 to 0.51 for the demonstration cross sections. The channel characterization and set of channel property relationships have value for both analysis and design applications related to stream restoration, in which the consistency of a designed channel with existing field conditions is imperative for channel stability.
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      Parsimonious Mathematical Characterization of Channel Shape and Size

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    contributor authorGlenn E. Moglen
    date accessioned2017-12-30T12:56:11Z
    date available2017-12-30T12:56:11Z
    date issued2017
    identifier other%28ASCE%29HE.1943-5584.0001588.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4243610
    description abstractThis work has two purposes: (1) starting from the classic hydraulic geometry formulation, present a mathematically parsimonious, two-parameter, characterization of channel shape and size; and (2) analytically quantify cross-sectional area, top width, average depth, critical energy, and bank-full discharge at critical conditions as a function of these two parameters. The matter of channel asymmetry is examined, and a metric for quantifying asymmetry is presented. The robustness of this characterization is demonstrated in an application to several observed channels in Maryland and Delaware across three physiographic regions: Allegheny plateau, Piedmont, and coastal plain. Values of the shape parameter, u, ranged from 1.6 to 4.3, and asymmetry measures ranged from 0.09 to 0.51 for the demonstration cross sections. The channel characterization and set of channel property relationships have value for both analysis and design applications related to stream restoration, in which the consistency of a designed channel with existing field conditions is imperative for channel stability.
    publisherAmerican Society of Civil Engineers
    titleParsimonious Mathematical Characterization of Channel Shape and Size
    typeJournal Paper
    journal volume22
    journal issue12
    journal titleJournal of Hydrologic Engineering
    identifier doi10.1061/(ASCE)HE.1943-5584.0001588
    page06017006
    treeJournal of Hydrologic Engineering:;2017:;Volume ( 022 ):;issue: 012
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian