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- W2034285245 abstract "Research Article| March 01, 2013 Fluvial features on Titan: Insights from morphology and modeling Devon M. Burr; Devon M. Burr † 1Earth and Planetary Sciences Department, University of Tennessee–Knoxville, 1412 Circle Drive, Knoxville, Tennessee 37996-1410, USA †E-mail: dburr1@utk.edu Search for other works by this author on: GSW Google Scholar J. Taylor Perron; J. Taylor Perron 2Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA Search for other works by this author on: GSW Google Scholar Michael P. Lamb; Michael P. Lamb 3Geological and Planetary Sciences, California Institute of Technology, 1200 E California Boulevard, MC 170-25, Pasadena, California 91125, USA Search for other works by this author on: GSW Google Scholar Rossman P. Irwin, III; Rossman P. Irwin, III 4Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, MRC 315, 6th Street at Independence Avenue SW, Washington, District of Columbia 20013, USA Search for other works by this author on: GSW Google Scholar Geoffrey C. Collins; Geoffrey C. Collins 5Physics and Astronomy Department, Wheaton College, 26 E. Main Street, Norton, Massachusetts 02766, USA Search for other works by this author on: GSW Google Scholar Alan D. Howard; Alan D. Howard 6Department of Environmental Sciences, University of Virginia, P.O. Box 400123, Charlottesville, Virginia 22904-4123, USA Search for other works by this author on: GSW Google Scholar Leonard S. Sklar; Leonard S. Sklar 7Department of Geosciences, San Francisco State University, 1600 Holloway Avenue, San Francisco, California 94132, USA Search for other works by this author on: GSW Google Scholar Jeffrey M. Moore; Jeffrey M. Moore 8Space Sciences Division, National Aeronautics and Space Administration Ames Research Center, MS 245-3, Moffett Field, California 94035, USA Search for other works by this author on: GSW Google Scholar Máté Ádámkovics; Máté Ádámkovics 9Astronomy Department, University of California, 601 Campbell Hall, Berkeley, California 94720-3411, USA Search for other works by this author on: GSW Google Scholar Victor R. Baker; Victor R. Baker 10Department of Hydrology and Water Resources, The University of Arizona, J.W. Harshbarger Building, Room 246, 1133 E. James E. Rogers Way, Tucson, Arizona 85721-0011, USA Search for other works by this author on: GSW Google Scholar Sarah A. Drummond; Sarah A. Drummond 1Earth and Planetary Sciences Department, University of Tennessee–Knoxville, 1412 Circle Drive, Knoxville, Tennessee 37996-1410, USA Search for other works by this author on: GSW Google Scholar Benjamin A. Black Benjamin A. Black 2Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA Search for other works by this author on: GSW Google Scholar GSA Bulletin (2013) 125 (3-4): 299–321. https://doi.org/10.1130/B30612.1 Article history received: 23 Sep 2011 rev-recd: 18 Jul 2012 accepted: 28 Jul 2012 first online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Devon M. Burr, J. Taylor Perron, Michael P. Lamb, Rossman P. Irwin, Geoffrey C. Collins, Alan D. Howard, Leonard S. Sklar, Jeffrey M. Moore, Máté Ádámkovics, Victor R. Baker, Sarah A. Drummond, Benjamin A. Black; Fluvial features on Titan: Insights from morphology and modeling. GSA Bulletin 2013;; 125 (3-4): 299–321. doi: https://doi.org/10.1130/B30612.1 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 SocietyGSA Bulletin Search Advanced Search Abstract Fluvial features on Titan have been identified in synthetic aperture radar (SAR) data taken during spacecraft flybys by the Cassini Titan Radar Mapper (RADAR) and in Descent Imager/Spectral Radiometer (DISR) images taken during descent of the Huygens probe to the surface. Interpretations using terrestrial analogs and process mechanics extend our perspective on fluvial geomorphology to another world and offer insight into their formative processes. At the landscape scale, the varied morphologies of Titan’s fluvial networks imply a variety of mechanical controls, including structural influence, on channelized flows. At the reach scale, the various morphologies of individual fluvial features, implying a broad range of fluvial processes, suggest that (paleo-)flows did not occupy the entire observed width of the features. DISR images provide a spatially limited view of uplands dissected by valley networks, also likely formed by overland flows, which are not visible in lower-resolution SAR data. This high-resolution snapshot suggests that some fluvial features observed in SAR data may be river valleys rather than channels, and that uplands elsewhere on Titan may also have fine-scale fluvial dissection that is not resolved in SAR data. Radar-bright terrain with crenulated bright and dark bands is hypothesized here to be a signature of fine-scale fluvial dissection. Fluvial deposition is inferred to occur in braided channels, in (paleo)lake basins, and on SAR-dark plains, and DISR images at the surface indicate the presence of fluvial sediment. Flow sufficient to move sediment is inferred from observations and modeling of atmospheric processes, which support the inference from surface morphology of precipitation-fed fluvial processes. With material properties appropriate for Titan, terrestrial hydraulic equations are applicable to flow on Titan for fully turbulent flow and rough boundaries. For low-Reynolds-number flow over smooth boundaries, however, knowledge of fluid kinematic viscosity is necessary. Sediment movement and bed form development should occur at lower bed shear stress on Titan than on Earth. Scaling bedrock erosion, however, is hampered by uncertainties regarding Titan material properties. Overall, observations of Titan point to a world pervasively influenced by fluvial processes, for which appropriate terrestrial analogs and formulations may provide insight. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2034285245 title "Fluvial features on Titan: Insights from morphology and modeling" @default.
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