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Current-meter recordings of low-speed turbidity currents

1977; Geological Society of America; Volume: 5; Issue: 5 Linguagem: Inglês

10.1130/0091-7613(1977)5 2.0.co;2

1943-2682

Francis P. Shepard, Patrick A. McLoughlin, Neil F. Marshall, Gary G. Sullivan,

Geological formations and processes

Research Article| May 01, 1977 Current-meter recordings of low-speed turbidity currents Francis P. Shepard; Francis P. Shepard 1Geological Research Division, A–015, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093 Search for other works by this author on: GSW Google Scholar Patrick A. McLoughlin; Patrick A. McLoughlin 1Geological Research Division, A–015, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093 Search for other works by this author on: GSW Google Scholar Neil F. Marshall; Neil F. Marshall 1Geological Research Division, A–015, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093 Search for other works by this author on: GSW Google Scholar Gary G. Sullivan Gary G. Sullivan 1Geological Research Division, A–015, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093 Search for other works by this author on: GSW Google Scholar Geology (1977) 5 (5): 297–301. https://doi.org/10.1130/0091-7613(1977)5 2.0.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Francis P. Shepard, Patrick A. McLoughlin, Neil F. Marshall, Gary G. Sullivan; Current-meter recordings of low-speed turbidity currents. Geology 1977;; 5 (5): 297–301. doi: https://doi.org/10.1130/0091-7613(1977)5 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 SocietyGeology Search Advanced Search Abstract Turbidity currents of high velocity may occur during catastrophic conditions, but our records suggest that currents of little more than 1 knot (= 0.5 m/s) may be quite common in submarine canyons. Our three current-meter records of such currents were obtained (1) during an onshore storm at La Jolla, California, (2) during relatively high swells off the Rio Balsas Delta in western Mexico, and (3) in Abra Canyon off the Abra Delta in northwest Luzon during flood conditions. A pattern observed in all these occurences included a preceding, relatively large, upcanyon flow, a rapid buildup of the downcanyon turbidity current, a slow decay, and a following interval of no current. These currents may be particularly common where deltas have built across the continental shelf and large masses of sediment are being introduced into canyon heads. These relatively weak currents may transport large quantities of sediment down the canyon. 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.