1013-001%2017%20-%20Ch%203%20Groundwater

1013-001%2017%20-%20Ch%203%20Groundwater - both occupy pore...

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Chapter 3 – Groundwater GEO 1013 Third Planet
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The Water Cycle
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Water Cycle The hydrologic cycle is a summary of the circulation of Earth’s water supply Processes in the water cycle Precipitation Evaporation Infiltration Runoff Transpiration
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The Hydrologic Cycle
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Ninety-seven and a half percent of Earth’s water is in the oceans, 1.8 percent is locked up in glaciers, 0.63 percent is ground water, 0.01 percent is in lakes and rivers, and 0.001 percent is in the atmosphere.
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Climate: Water Surplus or Deficiency >200 - 50 50 - 0 0 - -50 -50 - <-200 Ppte – Evap. Water Surplus (+) or Deficency (-) [cm] - 5 0
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Where Does The Water Go?
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Porosity = Volume of voids ÷ Total volume t v V V n = Interconnection of voids (pore space) determines the ease with which water moves through the rock PORE TYPES
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Soil Weathered bedrock Porous bedrock (sandstone) Unsaturated zone Groundwater table Saturated zone Water and air
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Unformatted text preview: both occupy pore spaces Water fills all pore spaces ZONES OF SUBSURFACE WATER Water beneath the surface Movement of groundwater Porosity Percentage of pore spaces Determines how much groundwater can be stored Water beneath the surface Movement of groundwater Permeability Ability to transmit water through connected pores Aquitard An impermeable layer of material Aquifer A permeable layer of material Aquifer Types AQUIFERS, CONFINING LAYERS, AND HYDRAULIC HEAD Recharge area Unconfined aquifer Unsaturated zone Confining layer Aquifer Confined aquifer Water table Potentiometric surface Perched aquifer Flowing artesian well Artesian well Water-table well Groundwater moves from areas of high to areas of low potential energy (hydraulic head) Flow path...
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1013-001%2017%20-%20Ch%203%20Groundwater - both occupy pore...

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