EP51D:
Complexity in Geomorphological Systems: Networks, Connectivity, and Self-Organization I

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Session ID#: 35290

Session Description:
Geomorphological systems have been increasingly analyzed as complex systems. Elements of these systems contributing to their complexity include networks, connectivity, and self-organization. Channel networks are ubiquitous in nature, occur at multiple scales, and serve as the major pathways through which material is conveyed through landscapes. The structure and dynamics of networks and connectivity between different geomorphic features provides insight into material fluxes and exchanges. While autogenic processes and self-organization have become widely recognized, linking these observations to physical processes has been limited and thus the implications of self-organization have remained under-utilized. This session aims to bring together researchers working across disparate geomorphic systems to discuss approaches and insights on the complexity of these systems. This session invites presentations on quantifying aspects of channel-network structure (e.g., topology, geometry); connectivity (including floodplain connectivity); process dynamics on or of the network related to sediment or biogeochemical cycling; and autogenic processes and self-organization.
Primary Convener:  Jonathan A Czuba, Virginia Tech, Biological Systems Engineering, Blacksburg, United States
Conveners:  Alexandra Christensen, Jet Propulsion Laboratory, Suborbital Radar Science and Engineering, Pasadena, United States, Haipeng Li, Colorado School of Mines, Golden, CO, United States and John Shaw, University of Arkansas, Fayetteville, AR, United States
Chairs:  Haipeng Li, Colorado School of Mines, Golden, CO, United States, Robert Twilley, Louisiana State University, Department of Oceanography & Coastal Sciences, Baton Rouge, United States, Piret Plink-Bjorklund, Colorado School of Mines, Geology and Geological Engineering, Golden, CO, United States and Colin B Phillips, Northwestern University, Evanston, IL, United States
OSPA Liaison:  Colin B Phillips, Northwestern University, Evanston, IL, United States

Cross-Listed:
  • B - Biogeosciences
  • H - Hydrology
  • NG - Nonlinear Geophysics
Index Terms:

0439 Ecosystems, structure and dynamics [BIOGEOSCIENCES]
1820 Floodplain dynamics [HYDROLOGY]
1824 Geomorphology: general [HYDROLOGY]
4485 Self-organization [NONLINEAR GEOPHYSICS]

Abstracts Submitted to this Session:

Autogenic and Allogenic: Emergent Coastline Patterns Interact With Forcing Variations (Invited) (232658)
Allen Bradshaw Murray, Duke University, Division of Earth and Climate Sciences, Nicholas School of the Environment, Durham, United States, Jose A.A. Antolinez, University of Cantabria, Ciencias y Tecnicas del Agua y del Medio Ambiente, Santander, Spain, Fernando J. Mendez, Universidad de Cantabria, GeoOcean, Santander, Spain, Laura J. Moore, University of North Carolina at Chapel Hill, Earth, Marine and Environmental Sciences, Chapel Hill, United States, James Wood, North Carolina School of Science and Math, Durham, NC, United States and Graham Farley, University of North Carolina, Chapel Hill, Geological Sciences, Chapel Hill, NC, United States
Morphodynamics and stratigraphic architecture of shelf-edge deltas subject to constant vs. dynamic environmental forcings (259531)
Kyle M Straub, Tulane University of Louisiana, New Orleans, LA, United States
Autogenic Versus Allogenic Controls on the Evolution of a Coupled Fluvial Megafan–Mountainous Catchment System: Insight from Numerical Modelling  (245243)
Margaux Mouchene1, Peter van der Beek2, Sebastien Carretier3,4 and Frederic Mouthereau3, (1)University of Colorado, Boulder, CIRES, Boulder, CO, United States, (2)Université Grenoble Alpes, CNRS, ISTerre, CS-40700, Grenoble, France, (3)GET, Observatoire Midi Pyrénées, Université de Toulouse, CNRS, IRD, Toulouse, France, (4)Geosciences Environnement Toulouse, Toulouse, France
Allogenic and Autogenic Signals in the Detrital Zircon U-Pb Record of the Deep-Sea Bengal Fan (262667)
Michael D Blum, The University of Kansas, Department of Geology, Lawrence, KS, United States, Kimberly G Rogers, James D Gleason, Univ Michigan - Earth& Env Sci, Ann Arbor, MI, United States and Yani Najman, University of Colorado at Boulder, Boulder, United States
Probing the Gaps: A Synthesis of Well-known and Lesser-known Hydrological Feedbacks Influencing Vegetation Patterning and Long-term Geomorphic Change in Low-gradient Fluvial Landscapes (Invited) (258490)
Laurel Larsen1, Alexandra Christensen2, Jud W Harvey3, Hongxu Ma4, Susan Newman5, Colin Saunders5 and Robert Twilley6, (1)University of California Berkeley, Geography, Berkeley, CA, United States, (2)Louisiana State University, Oceanography and Coastal Sciences, Baton Rouge, LA, United States, (3)U.S. Geological Survey, Earth System Processes Division, Reston, United States, (4)Google, Mountain View, United States, (5)South Florida Water Management District, West Palm Beach, FL, United States, (6)Louisiana State University, Department of Oceanography & Coastal Sciences, Baton Rouge, United States
Steady evolution of hillslopes in layered landscapes: self-organization of a numerical hogback (229875)
Rachel Glade, Los Alamos National Laboratory, Geological Sciences, Los Alamos, NM, United States; INSTAAR (Institute for Arctic and Alpine Research), Boulder, CO, United States and Robert S Anderson, Department of Geological Sciences and INSTAAR, Boulder, United States
The formation of low-angle eolian stratification through the migration of protodunes (226475)
Ryan C. Ewing1, John D. Phillips2, Bradley Weymer3, Patrick Barrineaux3, Roy Bowling2 and Jeffrey A Nittrouer4, (1)Texas A&M University College Station, Department of Geology & Geophysics, College Station, TX, United States, (2)Texas A&M University College Station, College Station, TX, United States, (3)Texas A&M University, College Station, TX, United States, (4)Rice University, Department of Earth, Environmental, and Planetary Sciences, Houston, United States

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