Computer simulation of rock-glacier development under viscous and pseudoplastic flow

Research Article| April 01, 1983 Computer simulation of rock-glacier development under viscous and pseudoplastic flow GREG A. OLYPHANT GREG A. OLYPHANT 1Department of Geography, Indiana University, Bloomington, Indiana 47405 Search for other works by this author on: GSW Google Scholar Author and Article Information GREG A. OLYPHANT 1Department of Geography, Indiana University, Bloomington, Indiana 47405 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1983) 94 (4): 499–505. https://doi.org/10.1130/0016-7606(1983)942.0.CO;2 Article history First Online: 01 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 GREG A. OLYPHANT; Computer simulation of rock-glacier development under viscous and pseudoplastic flow. GSA Bulletin 1983;; 94 (4): 499–505. doi: https://doi.org/10.1130/0016-7606(1983)942.0.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 The rock-glacier debris transport system is mathematically linked to its bedrock-cliff source area by combining expressions for debris input and rock-glacier flow with a continuity equation. Numerical solutions are achieved by computer simulation, given the initial conditions of a 295-m cliff and a 10-m basal talus. Resulting system configurations depend upon rockwall weathering rate and rock-glacier flow resistance, as well as the type (viscous or pseudoplastic) of rock-glacier deformation.Steady-state equilibrium is achieved more quickly under pseudoplastic flow, but for given rates of rockwall retreat and flow resistance, steady-state rock glaciers tend to be larger and more powerful under viscous flow. When rock-glacier development is simulated under the assumption of cyclic climatic fluctuation, resulting geometries are similar for viscous and pseudoplastic flow. However, the rock-glacier output response to debris input is shown to be less lagged and less amplified under pseudoplastic flow. 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.