Patterns of movement in rotational and translational landslides

Abstract

Research Article| August 01, 2002 Patterns of movement in rotational and translational landslides David N. Petley; David N. Petley 1Department of Geography, University of Durham, Durham DH1 3LE, UK Search for other works by this author on: GSW Google Scholar Mark H. Bulmer; Mark H. Bulmer 2Joint Center for Earth Systems Technology, University of Maryland, Baltimore, Maryland 21250, USA Search for other works by this author on: GSW Google Scholar William Murphy William Murphy 3School of Earth Sciences, University of Leeds, Leeds LS2 9JT, UK Search for other works by this author on: GSW Google Scholar Author and Article Information David N. Petley 1Department of Geography, University of Durham, Durham DH1 3LE, UK Mark H. Bulmer 2Joint Center for Earth Systems Technology, University of Maryland, Baltimore, Maryland 21250, USA William Murphy 3School of Earth Sciences, University of Leeds, Leeds LS2 9JT, UK Publisher: Geological Society of America Received: 05 Dec 2001 Revision Received: 12 Apr 2002 Accepted: 18 Apr 2002 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2002) 30 (8): 719–722. https://doi.org/10.1130/0091-7613(2002)030<0719:POMIRA>2.0.CO;2 Article history Received: 05 Dec 2001 Revision Received: 12 Apr 2002 Accepted: 18 Apr 2002 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 David N. Petley, Mark H. Bulmer, William Murphy; Patterns of movement in rotational and translational landslides. Geology 2002;; 30 (8): 719–722. doi: https://doi.org/10.1130/0091-7613(2002)030<0719:POMIRA>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 The movement of rotational and translational landslides occurs as a result of either sliding on discrete shear surfaces or ductile deformation within a shear zone. In this paper we examine the movement histories of a number of landslides that occurred in a variety of materials in a range of settings, and demonstrate that one of two movement styles is evident during accelerating phases for all landslides observed. The first style, which has previously been noted, has a linear form in a plot of 1/v against time (v is velocity). The second style has an asymptotic form in the same plot, trending toward steady-state movement rates. We propose that the linear form occurs in landslides in which crack propagation (i.e., shear surface generation) is the dominant process, whereas the second style occurs where movement is taking place across existing planes of weakness or as a result of ductile deformation processes. This study demonstrates that the evaluation of plots of 1/v against time for landslides is a useful technique for forecasting movement styles and rates, and for interpreting ongoing deformation processes in real time. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.