Groundwater - Layers and soil properties
9 important questions on Groundwater - Layers and soil properties
What are the hydrogeologic layer types?
-confined aquifer: always completely saturated
-semi-confined aquifer: the aquitard on top does not completely cover the aquifer
-aquitard/confining uit/poorly permeable layer
-aquiclude: resistance is so high that no water flows through it
-hydrological base: In NL: impermeable geological deposition, about 300m below soil surface. Deeper waters can be both saline and warm (possibly above 100 degrees C)
What are the 2 distinctions made in sediment?
-unconsolidated sediment: sand, clay and gravel
What is effective conductivity?
Effective conductivity of layer 1,2,3 is
(k1xD1+k2xD2+k3xD3)/(D1+D2+D3)
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Why does organic soil have a low conductivity?
What determines the saturated conductivity in peat soils?
How is the conductivity of flow of certain directions described?
-isotropic: conductivity is the same in all directions
What is the saturated hydraulic conductivity?
What is the difference between phreatic aquifers and confined aquifers?
What is the hydrological base?
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