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Hydraulic Parameters Controlling Bedform Migration on an Intertidal Sand Body

1972; Geological Society of America; Volume: 83; Issue: 11 Linguagem: Inglês

10.1130/0016-7606(1972)83[3465

1943-2674

George Klein, MARGARET LEINEN WHALEY,

Methane Hydrates and Related Phenomena

Research Article| November 01, 1972 Hydraulic Parameters Controlling Bedform Migration on an Intertidal Sand Body GEORGE DEVRIES KLEIN; GEORGE DEVRIES KLEIN Department of Geology, University of Illinois, Urbana, Illinois 61801 Search for other works by this author on: GSW Google Scholar MARGARET LEINEN WHALEY MARGARET LEINEN WHALEY Department of Oceanography, Oregon State University, Corvallis, Oregon 97331 Search for other works by this author on: GSW Google Scholar Author and Article Information GEORGE DEVRIES KLEIN Department of Geology, University of Illinois, Urbana, Illinois 61801 MARGARET LEINEN WHALEY Department of Oceanography, Oregon State University, Corvallis, Oregon 97331 Publisher: Geological Society of America Received: 14 Apr 1972 Revision Received: 02 Jun 1972 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1972, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1972) 83 (11): 3465–3470. https://doi.org/10.1130/0016-7606(1972)83[3465:HPCBMO]2.0.CO;2 Article history Received: 14 Apr 1972 Revision Received: 02 Jun 1972 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation GEORGE DEVRIES KLEIN, MARGARET LEINEN WHALEY; Hydraulic Parameters Controlling Bedform Migration on an Intertidal Sand Body. GSA Bulletin 1972;; 83 (11): 3465–3470. doi: https://doi.org/10.1130/0016-7606(1972)83[3465:HPCBMO]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 Bedform migration on an intertidal sand body in the Minas Basin, Bay of Fundy, is controlled by time-velocity asymmetry of tidal currents and by water depth. Dune migration occurs during ebb tide, whereas sand wave migration occurs during flood tide. Bedform migration is limited to short periods ranging from 40 min to 1.5 hrs, which coincide with maximum velocity phases of time-velocity profiles. Normal bottom-current velocities are achieved rapidly after sand body submergence and high water stage. Initiation of bedform migration occurs during both a subsequent decrease in bottom-current velocity and a later sharp increase to maximum bottom-current velocities. Dune migration takes place in water depths greater than those required for sand wave migration. This contrasts with water depth relations predicted from empirical formulae relating bedform wave length and wave height to depth of fluid flow. Representation of intertidal bedform migration variables on a depth-velocity-particle-size diagram shows excellent agreement with similar data obtained from experimental studies. 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.