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FLUME STUDIES OF THE TRANSPORT OF PEBBLES AND COBBLES ON A SAND BED

1962; Geological Society of America; Volume: 73; Issue: 11 Linguagem: Inglês

10.1130/0016-7606(1962)73[1431

1943-2674

Robert K. Fahnestock, W.L. Haushild,

Landslides and related hazards

Research Article| November 01, 1962 FLUME STUDIES OF THE TRANSPORT OF PEBBLES AND COBBLES ON A SAND BED R. K FAHNESTOCK; R. K FAHNESTOCK U. S. GEOLOGICAL SURVEY, C/O CIVIL ENGINEERING DEPT., COLORADO STATE UNIVERSITY, FORT COLLINS, COLO. PUBLICATION AUTHORIZED BY THE DIRECTOR, U.S. GEOLOGICAL SURVEY Search for other works by this author on: GSW Google Scholar W. L HAUSHILD W. L HAUSHILD U. S. GEOLOGICAL SURVEY, C/O CIVIL ENGINEERING DEPT., COLORADO STATE UNIVERSITY, FORT COLLINS, COLO. PUBLICATION AUTHORIZED BY THE DIRECTOR, U.S. GEOLOGICAL SURVEY Search for other works by this author on: GSW Google Scholar Author and Article Information R. K FAHNESTOCK U. S. GEOLOGICAL SURVEY, C/O CIVIL ENGINEERING DEPT., COLORADO STATE UNIVERSITY, FORT COLLINS, COLO. PUBLICATION AUTHORIZED BY THE DIRECTOR, U.S. GEOLOGICAL SURVEY W. L HAUSHILD U. S. GEOLOGICAL SURVEY, C/O CIVIL ENGINEERING DEPT., COLORADO STATE UNIVERSITY, FORT COLLINS, COLO. PUBLICATION AUTHORIZED BY THE DIRECTOR, U.S. GEOLOGICAL SURVEY Publisher: Geological Society of America Received: 24 Jan 1962 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1962, 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 (1962) 73 (11): 1431–1436. https://doi.org/10.1130/0016-7606(1962)73[1431:FSOTTO]2.0.CO;2 Article history Received: 24 Jan 1962 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation R. K FAHNESTOCK, W. L HAUSHILD; FLUME STUDIES OF THE TRANSPORT OF PEBBLES AND COBBLES ON A SAND BED. GSA Bulletin 1962;; 73 (11): 1431–1436. doi: https://doi.org/10.1130/0016-7606(1962)73[1431:FSOTTO]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 During experiments on sediment transport and resistance to flow with a uniform 0.33-mm sand, data were recorded on the movement of individual rocks having intermediate diameters from about 0.1 to 0.5 foot. The experiments were conducted in a flume 2 feet wide by 60 feet long and for most runs, depth was held constant at 0.5 foot.The experiments showed that rocks on the sand bed moved downstream consistently only if the flow was in the upper regime—that is, only if the bed forms were plane bed, standing waves, or antidunes. The rocks moved at velocities that were approximately half the average velocity of the water. On all bed forms in the lower flow regime (ripples, ripples superimposed upon dunes, and dunes), the rocks moved upstream and down into the bed. That is, the rocks moved into a scour pocket that formed at the upstream side of the rock. The movement upstream and down into the bed is limited by and approximately equal to the distance below the original rock position of the minimum bed elevation plus approximately half the rock diameter.The data indicate that cross-bedded sand deposits formed by the ripple or dune phases of transport would contain few, if any, pebbles or cobbles. Because the flow, in at least the downstream reaches, of most rivers is in the lower regime, the upstream movement and scour into the bed demonstrated in these experiments is an important factor in the sorting process. 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.