H076
Hydrogeological Controls on Groundwater Partitioning, Residence Times and Geochemical Fluxes in the Critical Zone
Session ID#: 81493
Session Description:
Groundwater flow partitioning and residence times across a broad range of scales exert a critical control on groundwater and surface water quality as well as various geological processes. Previous studies on the subject have traditionally focused on topography-driven flows, assuming that the water table is a subdued replica of the topography. Comparatively, climatic, geologic, vegetative and anthropogenic controls on flow and transport have received little interest. Hence, although largely acknowledged, the role of these additional factors is still poorly understood.
This session explores recent advances and challenges in unravelling the role of all hydrogeological factors on groundwater flow partitioning and its implications for transport and geochemical fluxes. Presentations may cover a wide range of approaches including analytical and numerical modelling, hydraulic, chemical and geophysical data, and theoretical frameworks. The introduction and application of innovative characterization methods is encouraged. Contributions may focus on a variety of scales, from riverbeds to continents.
Index Terms:
1828 Groundwater hydraulics [HYDROLOGY]
1830 Groundwater/surface water interaction [HYDROLOGY]
1831 Groundwater quality [HYDROLOGY]
1832 Groundwater transport [HYDROLOGY]
Primary Convener: Sarah Leray, Pontifical Catholic University of Chile, Ingeniería Hidráulica y Ambiental, Santiago, Chile
Conveners: Clément Roques, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, Etienne Bresciani, Korea Institute of Science and Technology, Seoul, South Korea and Pascal Goderniaux, Organization Not Listed, Washington, DC, United States
Primary Liaison: Sarah Leray, IFP Énergies nouvelles, Rueil-Malmaison, France
The role of advection and matrix diffusion in power-law scaling behavior of first passage times in three-dimensional discrete fracture networks (492198)
Jeffrey Hyman1, Harihar Rajaram2, Shriram Srinivasan3, Nataliia Makedonska4, Satish Karra4, Hari Selvi Viswanathan4 and Gowri Srinivasan4, (1)Los Alamos National Laboratory, Los Alamos, AZ, United States, (2)Univ Colorado, Boulder, CO, United States, (3)Los Alamos National Laboratory, Los Alamos, United States, (4)Los Alamos National Laboratory, Los Alamos, NM, United States
Recession Analysis 42 Years Later - Work Yet To Be Done (495198)
Elizabeth Rae Jachens1, David E Rupp1, Clément Roques2 and John S Selker3, (1)Oregon State University, Corvallis, OR, United States, (2)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (3)Oregon State University, Biological and Ecological Engineering, Corvallis, OR, United States
Hillslope Model of a Lakeshore Onsite Wastewater Treatment System (516126)
David E Radcliffe, University of Georgia, College of Agricultural and Environmental Sciences, Athens, GA, United States, Nandita Gaur, Texas A&M University, College Station, TX, United States, Samuele Ceolin, University of Georgia, Athens, GA, United States and Aris P. Georgakakos, Georgia Institute of Technology Main Campus, Georgia Water Resources Institute, Georgia Tech, Atlanta, GA, United States
Characterizing Groundwater Chemistry and Recharge in an Agricultural Claypan Watershed Using End Member Mixing Analysis (523253)
Kathryn Hofmeister, Michigan Technological University, School of Forest Resrouces and Environmental Science, Houghton, MI, United States, Robert Lerch, Cropping Systems and Water Quality Research Unit, USDA Agricultural Research Service, Columbia, MO, United States, John Yang, Lincoln University of Missouri, Jefferson City, MO, United States and Fengjing Liu, Michigan Technological University, School of Forest Resources and Environmental Sciences, Houghton, MI, United States
Geological controls of groundwater flow patterns in hard-rock systems, exemplified by the Rio Clarillo hydrosystem, western front of the Andean Principal Cordillera (Pirque, Santiago, Chile). (541565)
Etienne Marti1, Jose Ignacio Maringue2, Zeidy Huamán3, Sarah Leray3, Gonzalo A Yanez2, Jaime Araya Vargas2, Daniela Villela4, Esteban Salazar4, Gabriel Fernández3, Ronny Figueroa2, Jorge Sanhueza2, Marjorie Muñoz5 and Reynaldo Charrier6,7, (1)Sorbonne Université, Paris, France, (2)Pontifical Catholic University of Chile, Ingeniería Estructural y Geotécnica, Santiago, Chile, (3)Pontifical Catholic University of Chile, Ingeniería Hidráulica y Ambiental, Santiago, Chile, (4)Servicio Nacional de Geología y Minería, Santiago, Chile, (5)Universidad Andrés Bello, Santiago, Chile, (6)Universidad Andrés Bello, Escuela de Ciencias de la Tierra, Santiago, Chile, (7)Universidad de Chile, Departamento de Geología, Santiago, Chile
Spatial Variability of Hydrological Exchange Flows and Resident Time Distributions in a Large Regulated River (557721)
Xuehang Song1, Yilin Fang2, Jie Bao3, William A Perkins1, Huiying Ren1, Huifen Zhou4, Zhangshuan Hou5 and Timothy D Scheibe1, (1)Pacific Northwest National Laboratory, Richland, WA, United States, (2)Battelle, Pacific Northwest National Laboratory, Richland, WA, United States, (3)Pacific Northwest National Laboratory, Experimental and Computational Engineering Group, Richland, WA, United States, (4)Pacific Northwest National Laboratory, Richland, United States, (5)Pacific Northwest National Laboratory, Energy and Environment Directorate, Richland, WA, United States
Which way is downhill? Structure that controls flow in the deeply weathered Piedmont Critical Zone (612837)
Cassandra Cosans, Johns Hopkins University, Baltimore, MD, United States, Bradley Carr, University of Wyoming, Geology and Geophysics, Laramie, WY, United States and Ciaran J Harman, Johns Hopkins University, Environmental Health and Engineering, Baltimore, MD, United States
