EP23D:
The Importance of the Granular Scale in Earth and Planetary Surface Processes II

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Session ID#: 14787

Session Description:
Modeling of important planetary surface processes from channel dynamics to erosion of landscapes is typically performed using a continuum framework, rather than in a framework that explicitly captures particle scale processes, necessary, in part because of the typical scale of the problem.  In recent decades, experiments, field observations, and model efforts have indicated the dynamics of discrete particle interactions, sometimes referred to as “granular physics”, play an important role in the evolution of landscapes.  Examples include the erosion behavior and statistics of debris flows, sorting behaviors in transported sediments, and collisional dynamics in the evolution of dune fields.   This session welcomes contributions from experiments, field work and modeling work that contributes to our understanding of the importance of “granular physics” to planetary surface processes as well as the upscaling of these dynamics into continuum-like frameworks capable of representing large-scale systems.
Primary Convener:  Kimberly M Hill, University of Minnesota, Minneapolis, MN, United States
Conveners:  Philippe Frey, University Grenoble Alpes, IRSTEA, Saint Martin D'Hères, France and Julien Chauchat, University of Grenoble Alpes, IGE, Grenoble, France
Chairs:  Kimberly M Hill, University of Minnesota, Minneapolis, MN, United States and Philippe Frey, University Grenoble Alpes, IRSTEA, Saint Martin D'Hères, France
OSPA Liaison:  Julien Chauchat, University of Grenoble Alpes, IGE, Grenoble, France

Cross-Listed:
  • H - Hydrology
  • NG - Nonlinear Geophysics
  • NH - Natural Hazards
  • P - Planetary Sciences
Index Terms:

1847 Modeling [HYDROLOGY]
1862 Sediment transport [HYDROLOGY]
4430 Complex systems [NONLINEAR GEOPHYSICS]

Abstracts Submitted to this Session:

Experimental Exploration of Particle-Scale Bed Load Transport and Near-Bed Fluid Velocities (175117)
Siobhan L Fathel, Vanderbilt University, Nashville, TN, United States, David Jon Furbish, Vanderbilt University, Earth and Environmental Sciences, Nashville, United States and Mark Walter Schmeeckle, Arizona State University, Tempe, AZ, United States
Saltation on Earth and extraterrestrial atmospheres (Invited) (185959)
Alexandre Valance, University of Rennes, Physics, Rennes Cedex, France, James Jenkins, Cornell University, Civil and Environmental Engineering, Ithaca, NY, United States and Diego Berzi Sr., Politecnico di Milano, Civil Engineering, Milano, Italy
How rivers remember: The impacts of prior stress history on grain scale topography and bedload transport (150724)
Claire C Masteller, University of California Santa Cruz, Santa Cruz, CA, United States and Noah J Finnegan, UC Santa Cruz, EPS, Santa Cruz, CA, United States
Dense granular flow rheology in turbulent bedload transport: from particle-scale simulations to continuous modelling (175120)
Raphael Maurin1,2, Julien Chauchat3 and Philippe Frey1, (1)Univ. Grenoble Alpes, IRSTEA, UR ETGR, Grenoble, France, (2)Univ. Toulouse, IMFT, Toulouse, France, (3)University of Grenoble Alpes, IGE, Grenoble, France
Creepy landscapes: the granular origins of soil transport on hillslopes (154164)
Behrooz Ferdowsi1, Carlos Pompeyo Ortiz1 and Douglas J Jerolmack2, (1)University of Pennsylvania, Philadelphia, PA, United States, (2)University of Pennsylvania, Department of Mechanical Engineering and Applied Mechanics, Philadelphia, United States
Experimental Studies of Increased Bed Fragility Induced by Evolving Bed Fabric Associated with Repeated Debris Flows (179729)
Anthony Longjas1,2, Jared Mullenbach3 and Kimberly M Hill3, (1)St. Anthony Falls Laboratory, Minneapolis, MN, United States, (2)University of California Irvine, Department of Civil and Environmental Engineering, Irvine, CA, United States, (3)University of Minnesota, Minneapolis, MN, United States
Two-Phase Solid/Fluid Simulation of Dense Granular Flows With Dilatancy Effects (138253)
Anne Mangeney1,2, Francois Bouchut3, Enrique D. Fernández-Nieto4, El Hadji Kone5 and Gladys Narbona-Reina4, (1)Institut de Physique du Globe de Paris (IPGP), Université Paris Cité, Paris, France, (2)Université Paris Diderot, Paris, France, (3)Université Marne la Vallée, Laboratoire d’Analyse et de Mathématiques Appliquées, Marne la Vallée, France, (4)University of Sevilla, Applied Mathematics, Sevilla, Spain, (5)Institut de Physique du Globe de Paris, Paris, France
Effects of debris-flow composition on runout and erosion (124896)
Maarten G Kleinhans and Tjalling de Haas, Utrecht University, Physical Geography, Utrecht, Netherlands

See more of: Earth and Planetary Surface Processes