H34F:
Preferential Flows in Fractured Porous Media, Soils, and Rock–Soil Interfaces I


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Session ID#: 62076

Session Description:
Preferential flows in subsurface media are widely acknowledged to control infiltration and recharge, aquifer vulnerability as well as connectivity of surface and subsurface ecosystems. While they are also associated with saturated flow dynamics, e.g. in the context of anomalous transport, they commonly occur under unsaturated conditions in soils and fractured porous media. To study the onset and dynamics of preferential flow, and hence the partitioning into several sub-domains (macropores, fractures) with strong contrasts in hydraulic conductivity, elaborate analytical, numerical and experimental methods are required across scales. Specifically, in the case of fractured (karstified) porous media, research is often complicated by the much larger associated scales of fractures, limited accessibility, and, consequently, the applicability of soil-related methods for the quantification of flow dynamics is questionable. In this session we welcome contributions from the soil science and the hydrogeological community to share and integrate findings and promote joint research.
Primary Convener:  Jannes Kordilla, University of Göttingen, Applied Geosciences, Göttingen, Germany
Conveners:  John R Nimmo, USGS California Water Science Center Menlo Park, Menlo Park, CA, United States, Laurent Lassabatere, ENTPE, Vaulx En Velin, France and Andreas J Hartmann, University of Freiburg, Chair of Hydrological Modeling and Water Resources, Freiburg, Germany
Primary Liaison:  Jannes Kordilla, University of Göttingen, Applied Geosciences, Göttingen, Germany
Chairs:  Jannes Kordilla, University of Göttingen, Applied Geosciences, Göttingen, Germany and Laurent Lassabatere, ENTPE, Vaulx En Velin, France
OSPA Liaison:  Jannes Kordilla, University of Göttingen, Applied Geosciences, Göttingen, Germany
Index Terms:

1838 Infiltration [HYDROLOGY]
1847 Modeling [HYDROLOGY]
1865 Soils [HYDROLOGY]
1875 Vadose zone [HYDROLOGY]

Abstracts Submitted to this Session:

Gravitational and Matric/Capillary Potential Controls on Distributing Unsaturated Flow of Water in Fracture Rocks and Talus (Invited) (344789)
Tetsu K Tokunaga, Lawrence Berkeley National Lab, Berkeley, CA, United States
Fractures and resurgences in porous media (Invited) (348524)
Pierre M Adler, University Pierre and Marie Curie Paris VI, Paris, France
Predicting dynamic controls on preferential flow in soils (369793)
Ryan D. Stewart, Virginia Polytechnic Institute and State University, Crop and Soil Environmental Sciences, Blacksburg, United States
Mixed analytical and numerical modeling approach for fluid flow in simplified 3D fracture networks (407090)
Delphine Roubinet1, Serdar Demirel2, James Irving3 and Emily Voytek2, (1)CNRS - Geosciences Montpellier, Montpellier, France, (2)University of Lausanne, Lausanne, Switzerland, (3)University of Lausanne, Institute of Earth Sciences, Lausanne, Switzerland
Visualizing Macropore Flow Mechanisms using 4D X-ray Computed Tomography Imaging within a Heterogeneous Porous Medium (455017)
Abdullah Al Mamun, Clemson University, Clemson, SC, United States, Stephen M Moysey, East Carolina University, Greenville, NC, United States, Mine Dogan, Western Michigan University, Department of Geological and Environmental Sciences, Kalamazoo, MI, United States and Larry C Murdoch, Clemson University, Environmental Engineering and Earth Sciences, Clemson, SC, United States
Meso-Scale Infiltration Experiments and Modeling of Preferential Flow in Macroporous Soils (401099)
Lucie Guertault1, Garey A Fox1, Prof. Rafael Munoz-Carpena, Ph.D.2 and Derek Heeren3, (1)North Carolina State University Raleigh, Biological and Agricultural Engineering, Raleigh, NC, United States, (2)University of Florida (Visiting Professor at Public University of Navarra, Spain), Agricultural and Biological Engineering, Gainesville, FL, United States, (3)University of Nebraska Lincoln, Department of Biological Systems Engineering, Lincoln, United States
Using Combinatorial Optimization on Graph Networks to Compute Fluid Flow through Discrete Fracture Networks (433117)
Alex Hobé1,2, Daniel Vogler2,3, Martin P. Seybold4, Anozie Ebigbo2, Randolph R Settgast5 and Martin O Saar2, (1)Uppsala University, Department of Earth Science, Uppsala, Sweden, (2)ETH Zurich, Geothermal Energy and Geofluids, Institute of Geophysics, Zurich, Switzerland, (3)ETH Zurich, Transport Processes and Reactions Laboratory, Institute of Process Engineering, Zurich, Switzerland, (4)University of Stuttgart, Institute of Formal Methods in Computer Science, Stuttgart, Germany, (5)Lawrence Livermore National Laboratory, Livermore, CA, United States

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