Statistical analysis of river characteristics (in Greece): basic hydraulic parameters

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dc.contributor.author Papadimitrakis, IA en
dc.contributor.author Orphanos, I en
dc.date.accessioned 2014-03-01T01:58:58Z
dc.date.available 2014-03-01T01:58:58Z
dc.date.issued 2009 en
dc.identifier.issn 0262-6667 en
dc.identifier.uri http://hdl.handle.net/123456789/28802
dc.subject Manning coefficient en
dc.subject velocity profiles en
dc.subject entropy parameter en
dc.subject spatial velocity deviation intensity en
dc.subject.classification Water Resources en
dc.subject.other OPEN-CHANNEL FLOW en
dc.subject.other VELOCITY DISTRIBUTION en
dc.subject.other UNCERTAINTY en
dc.subject.other ROUGHNESS en
dc.subject.other PROFILES en
dc.subject.other MAXIMUM en
dc.subject.other ENTROPY en
dc.title Statistical analysis of river characteristics (in Greece): basic hydraulic parameters en
heal.type journalArticle en
heal.language English en
heal.publicationDate 2009 en
heal.abstract A detailed investigation of the behaviour of various hydraulic parameters, using data from rivers in Greece, was conducted in order to explore the universality of features that many natural streams are believed to have in common. Analysis of vertical profiles of temporal mean of horizontal velocities (u) in the longitudinal (river flow) direction and of transverse profiles of depth-mean longitudinal velocities (U) estimated from these vertical profiles, measured at 232 cross-sections of several rivers in Greece, provided valuable information: on the distribution of local roughness coefficients (n(i)) along the wetted perimeter of the cross-sections examined; on the shape of u profiles; on the ratio of maximum to mean cross-sectional velocity, V-max/V-m, and its relation to a dimensionless entropy parameter, M; on the shape of U profiles; and on the normalized intensity, r, of the spatial departure of u velocities from V-m. The similarities among the quantities (u, U, n, V-max/V-m, M, r) analysed in this study and in pertinent literature reveal that the rivers examined exhibit many of the basic features, of rather universal character, shown by other rivers (all over the world) having different geometric and/or other characteristics (aspect ratios, bottom roughness, flow kinematics, etc.). Corresponding differences are also described and explained. en
heal.publisher IAHS PRESS, INST HYDROLOGY en
dc.identifier.isi ISI:000272747500004 en
dc.identifier.volume 54 en
dc.identifier.issue 6 en
dc.identifier.spage 1035 en
dc.identifier.epage 1052 en

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