Groundwater

Groundwater - Overpumping(or “mining” of groundwater...

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Chapter 17 Groundwater Infiltration – water soaks into the ground. Zone of aeration Zone of saturation Water table – top of zone of saturation. Porosity – percentage of a rock that is open space. Permeability – how well connected pores are; ability to transmit a fluid. Aquifer Aquiclude Types of Aquifers Confined aquifer Unconfined aquifer Recharge zone Artesian conditions – water flows freely from a well drilled into an artesian system. Requires: confined aquifer dipping rocks artesian pressure surface above ground level Spring – place where water seeps out of the ground Cone of depression Problems with groundwater withdrawal
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Unformatted text preview: Overpumping (or “mining” of groundwater) Subsidence Saltwater contamination (or saltwater incursion) Contamination by septic systems, pollution sources, etc Groundwater can erode rock, especially limestone. Result is KARST. Types of karst Cave or Cavern Speleothems – cave formations Stalactites Stalagmites Column Dripstone curtain Soda straw Cave popcorn Sinkhole Solution Valley Tower karst Hydrothermal activity – requires a heat source, usually magma. Geyser – place where hot water erupts violently from the ground Hot spring...
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Groundwater - Overpumping(or “mining” of groundwater...

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