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14 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are things that affect water density |
- salinity - temperature
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Explain the concept : compressability of water |
The measure of the relative volume due to a change in pressure |
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Pascal's Law |
Hydro static pressure increases with height |
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What is Bernoulli's principle? |
Total energy = potential energy + kinetic energy + fluid pressure energy |
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Equation for hydraulic head |
H = (P/ p x g) + z |
Pressure head + elevation head |
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Darcy's Law |
A generalised relationship for flow in a porous media, which is affected by flow area, elevation and fluid pressure |
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What are the types of aquifers? |
- unconfined/confined - aquitard - aquiclude - basement rock - recharge mound |
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Define recharge in terms of groundwater. |
The entry of water into a saturated zone at the water table |
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Diffuse recharge |
Widespread percolation |
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Localised recharge |
Concentrated due to source and local geology |
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Vadose zone |
Area above groundwater (partial saturation) |
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Phreatic zone |
Groundwater zone (saturated) |
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What affects hydraulic conductivity (k) ? |
- Darcy's law - permeability + porosity - viscosity of fluids |
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Explain groundwater discharge. |
The removal or loss of groundwater from a groundwater system. For example; evapotranspiration, lateral outflows, leakage of aquitard, springs, streams and wetlands. |
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