Variation in Width-Discharge Relation and Some Implications for Hydraulic Geometry

Abstract

Research Article| July 01, 1974 Variation in Width-Discharge Relation and Some Implications for Hydraulic Geometry A. DAVID KNIGHTON A. DAVID KNIGHTON 1Department of Geography, University of Sheffield, Sheffield S10 2TN, England Search for other works by this author on: GSW Google Scholar Author and Article Information A. DAVID KNIGHTON 1Department of Geography, University of Sheffield, Sheffield S10 2TN, England Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1974) 85 (7): 1069–1076. https://doi.org/10.1130/0016-7606(1974)85<1069:VIWRAS>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation A. DAVID KNIGHTON; Variation in Width-Discharge Relation and Some Implications for Hydraulic Geometry. GSA Bulletin 1974;; 85 (7): 1069–1076. doi: https://doi.org/10.1130/0016-7606(1974)85<1069:VIWRAS>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract In a channel with cohesive banks and no marked downstream variation in bank credibility, the downstream rate of width increase is principally a function of discharge, while its at-a-station rate of change is largely controlled by bank material composition, particularly silt-clay content. At-a-station hydraulic geometry is thereby constrained. The deposition of noncohesive sediment in the form of point bars and central islands provides the means whereby the stream can increase its rate of change of width at a cross section, suggesting that meander and braided reaches could be distinguished from straight reaches in terms of the b exponent. The effect of this adjustment is to decrease the mean velocity range. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.