EVSC 2800 Lecture Notes - Lecture 4: Hydrogeology, Vadose Zone, Aquifer
18 Feb 2016
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Document Summary
Lecture topic: hydrogeology and practical problems in hydrogeology. Figures 17. 1 again, 17. 2 again (or some image of the water cycle), 17. 9, 17. 10**, 17. 11, Key terms aquiclude, aquifer, artesian flow, discharge, groundwater, groundwater table, hydraulic gradient, hydrologic cycle, infiltration, permeability, potable, recharge, saturated zone, unsaturated zone. Hydrologic cycle describes the movement of water. Porosity is the pore space that may hold fluid. There is more porosity in a well sorted sand than in a poorly sorted sand. The pores are not as numerous or as well connected in a cemented sandstone. The water table is the boundary between the unsaturated zone typical of soils and shallow bedrock, and the saturated zone, typical of deeper formations. Permeability the ability of a formation (soil, sediments, or rock) to allow fluids to pass through pores or cracks. Aquifer a permeable formation (rock, sediments, or soil) that stores and transmits groundwater in sufficient quantity to supply wells.
