Understanding Aquifer Anisotropy in Groundwater Hydrology
Explore the concept of aquifer anisotropy and its impact on groundwater flow in layered systems. Learn how to calculate equivalent hydraulic conductivities and understand the general groundwater flow equations based on Darcy's Law and storage properties.
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Presentation Transcript
Anisotropy Key ideas Effective conductivity that represents aggregate effect of flow through a layered system Effective conductivity is different parallel to than perpendicular to the layers Material with this property is anisotropic properties are different in different directions From Mays, 2011, Ground and Surface Water Hydrology
Example An aquifer has 3 layers with K values indicated. Compute the equivalent horizontal and vertical hydraulic conductivities 10 m K=11.6 m/day 4.4 m K=4.5 m/day 6.2 m K=2.2 m/day
Aquifer Anisotropy and general flow equations Objective To be able to quantify the anisotropy of an aquifer due to layering To be able to describe the equations used in general groundwater flow calculations
General Groundwater Flow Equations Based on Darcy s Law Storage properties Used in groundwater models to examine more complex groundwater flow problems From Mays, 2011, Ground and Surface Water Hydrology
