Helical flow couplets in submarine gravity underflows

Abstract

Research Article| July 01, 2007 Helical flow couplets in submarine gravity underflows Jasim Imran; Jasim Imran 1Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, USA Search for other works by this author on: GSW Google Scholar Mohammad Ashraful Islam; Mohammad Ashraful Islam 1Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, USA Search for other works by this author on: GSW Google Scholar Heqing Huang; Heqing Huang 1Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, USA Search for other works by this author on: GSW Google Scholar Ahmed Kassem; Ahmed Kassem 1Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, USA Search for other works by this author on: GSW Google Scholar John Dickerson; John Dickerson 1Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, USA Search for other works by this author on: GSW Google Scholar Carlos Pirmez; Carlos Pirmez 2Shell Exploration and Production Company, 3737 Bellaire Boulevard, Houston, Texas 77001, USA Search for other works by this author on: GSW Google Scholar Gary Parker Gary Parker 3Department of Civil and Environmental Engineering and Department of Geology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Jasim Imran 1Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, USA Mohammad Ashraful Islam 1Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, USA Heqing Huang 1Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, USA Ahmed Kassem 1Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, USA John Dickerson 1Department of Civil and Environmental Engineering, University of South Carolina, Columbia, South Carolina 29208, USA Carlos Pirmez 2Shell Exploration and Production Company, 3737 Bellaire Boulevard, Houston, Texas 77001, USA Gary Parker 3Department of Civil and Environmental Engineering and Department of Geology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA Publisher: Geological Society of America Received: 07 Feb 2007 Revision Received: 05 Mar 2007 Accepted: 10 Mar 2007 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2007) 35 (7): 659–662. https://doi.org/10.1130/G23780A.1 Article history Received: 07 Feb 2007 Revision Received: 05 Mar 2007 Accepted: 10 Mar 2007 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Jasim Imran, Mohammad Ashraful Islam, Heqing Huang, Ahmed Kassem, John Dickerson, Carlos Pirmez, Gary Parker; Helical flow couplets in submarine gravity underflows. Geology 2007;; 35 (7): 659–662. doi: https://doi.org/10.1130/G23780A.1 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 Active and relic meandering channels are common on the seafloor adjacent to continental margins. These channels and their associated submarine fan deposits are products of the density-driven gravity flows known as turbidity currents. The tie between channel curvature and its effects on these gravity flows has been an enigma. This paper records the results of both large-scale laboratory measurements and a numerical simulation that captures the three-dimensional flow field of a gravity underflow at a channel bend. These findings reveal that channel curvature drives two helical flow cells, one stacked upon the other. The lower cell forms near the channel bed surface and has a circulation pattern similar to that observed in fluvial channels, i.e., with a near-bed flow directed inward. The other circulation cell forms in the upper part of the gravity flow and has a streamwise vorticity with the opposite sense of the lower cell. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.