EP31A:
Sediment Size Input to Fluvial Networks: Production, Transformation, Delivery, and Effects I Posters

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Session ID#: 13479

Session Description:
The size of sediments entering channels is a key control on river morphodynamics across a range of scales, from channel response to human land use to landscape response to changes in tectonic and climatic forcing. However, very little is known about what controls the size distribution of particles eroded from bedrock on hillslopes, and how particle sizes evolve before sediments are delivered to channels. Sediment size supplied to channels should depend on the climatic, lithologic, biotic, tectonic, and geomorphic factors that control chemical and physical weathering and hillslope sediment transport, yet few data or models are available to predict hillslope sediment size.  We invite contributions from field, theoretical, experimental and numerical approaches that further our understanding of the controls on (1) spatial and temporal variations in the size distribution of sediment supplied to river networks, and (2) how variations in hillslope sediment size impact river morphodynamics and the sedimentary record.
Primary Convener:  Mikael Attal, University of Edinburgh, School of GeoSciences, Edinburgh, EH9, United Kingdom
Conveners:  Mikael Attal, University of Edinburgh, School of GeoSciences, Edinburgh, EH9, United Kingdom, Leonard S Sklar, San Francisco State University, Earth & Climate Sciences, San Francisco, CA, United States and Clifford S Riebe, University of Wyoming, Laramie, United States
Chairs:  Mikael Attal, University of Edinburgh, School of GeoSciences, Edinburgh, EH9, United Kingdom and Clifford S Riebe, University of Wyoming, Laramie, United States
OSPA Liaison:  Mikael Attal, University of Edinburgh, School of GeoSciences, Edinburgh, EH9, United Kingdom

Cross-Listed:
  • H - Hydrology
  • T - Tectonophysics
Index Terms:

1625 Geomorphology and weathering [GLOBAL CHANGE]
1815 Erosion [HYDROLOGY]
1865 Soils [HYDROLOGY]
8175 Tectonics and landscape evolution [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Modeling Cobble Transport in a Fluvial System for Provenance Studies: The Cement Mixer Experiment (121639)
Kate S Pound, Gustavus Adolphus College, Environment, Geography, and Earth Sciences, Saint Peter, MN, United States and Heidi Heldberg, Saint Cloud State University, St Cloud, MN, United States
How Reliable is Your Detrital Geothermochronological Data? Quantifying the Influence of Abrasion on Detrital Heavy Minerals Through Numerical Modelling (130967)
Chrystiann Lavarini1, Mikael Attal2 and Linda A Kirstein1, (1)University of Edinburgh, Edinburgh, EH9, United Kingdom, (2)University of Edinburgh, School of GeoSciences, Edinburgh, EH9, United Kingdom
Particle Size Reduction in Geophysical Granular Flows: The Role of Rock Fragmentation (145475)
Gionata Bianchi and Leonard S Sklar, San Francisco State University, San Francisco, CA, United States
Lithological dependency of source and particle size of fluvial sediment from mountain to coastal area (177310)
Shigeru Mizugaki, Junichi Otsuka, Masami Ohashi, Atsushi Tanise and Ryuichi Shimme, PWRI Public Works Research Instituite, CERI Civil Engineering Research Institute for cold region, Sapporo, Japan
Can the Size Distributions of Talus Particles be Predicted from Fracture Spacing Distributions on Adjacent Bedrock Cliffs? (151084)
Joey Patrick Verdian1, Leonard S Sklar1, Jeffrey R Moore2 and Daniel J Rosenberg3, (1)San Francisco State University, San Francisco, CA, United States, (2)University of Utah, Salt Lake City, UT, United States, (3)Lawrence Berkeley National Laboratory, Berkeley, CA, United States
Using multi-scale remote sensing techniques to quantify hillslope channel coupling in bedrock landscapes (180422)
Alexander Banks Neely, University of California Santa Barbara, Santa Barbara, CA, United States and Roman A DiBiase, Pennsylvania State University Main Campus, Department of Geosciences, University Park, United States
Channel Armoring, Incision, and Surface Particle Size Distribution Change Detection in a Highly Disturbed Watershed (191686)
Tim Lane Bailey, Redwood Forest Foundation, Fort Bragg, United States

See more of: Earth and Planetary Surface Processes