Simulation of turbid underflows generated by the plunging of a river

Abstract

Research Article| July 01, 2001 Simulation of turbid underflows generated by the plunging of a river Ahmed Kassem; Ahmed Kassem 1Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, South Carolina 29208, USA Search for other works by this author on: GSW Google Scholar Jasim Imran Jasim Imran 1Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, South Carolina 29208, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Ahmed Kassem 1Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, South Carolina 29208, USA Jasim Imran 1Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, South Carolina 29208, USA Publisher: Geological Society of America Received: 16 Nov 2000 Revision Received: 01 Mar 2001 Accepted: 21 Mar 2001 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2001) 29 (7): 655–658. https://doi.org/10.1130/0091-7613(2001)029<0655:SOTUGB>2.0.CO;2 Article history Received: 16 Nov 2000 Revision Received: 01 Mar 2001 Accepted: 21 Mar 2001 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 Ahmed Kassem, Jasim Imran; Simulation of turbid underflows generated by the plunging of a river. Geology 2001;; 29 (7): 655–658. doi: https://doi.org/10.1130/0091-7613(2001)029<0655:SOTUGB>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 When the density of sediment-laden river water exceeds that of the lake or ocean into which it discharges, the river plunges to the bottom of the receiving water body and continues to flow as a hyperpycnal flow. These particle-laden underflows, also known as turbidity currents, can travel remarkable distances and profoundly influence the seabed morphology from shoreline to abyss by depositing, eroding, and dispersing large quantities of sediment particles. Here we present a new approach to investigating the transformation of a plunging river flow into a turbidity current. Unlike previous workers using experimental and numerical treatments, we consider the evolution of a turbidity current from a river as different stages of a single flow process. From initial commotion to final stabilization, the transformation of a river (open channel flow) into a density-driven current (hyperpycnal flow) is captured in its entirety by a numerical model. Successful implementation of the model in laboratory and field cases has revealed the dynamics of a complex geophysical flow that is extremely difficult to observe in the field or model in the laboratory. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.