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Understanding Hydrologic Cycle and Groundwater Movement

Explore the controls on hydrology, including climate impact, geographical influences, humidity, and droughts. Learn about groundwater movement through aquifers, porosity, permeability, and groundwater tables. Understand recharge and discharge processes, confined and unconfined aquifers, and artesian flows.

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Understanding Hydrologic Cycle and Groundwater Movement

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  1. HYDROLOGIC CYCLE AND GROUNDWATER

  2. Water Movement Around the Earth

  3. Controls on Hydrology 1. climate i. local vs. global hydrology 2. geography 3. humidity 4. droughts

  4. • Controls on Hydrology 1. climate i. local vs. global hydrology 2. geography 3. humidity 4. droughts

  5. Movement of Water Through the Earth: Groundwater • 1. aquifers: porous beds of rock or soil • 2. water flows through aquifers by moving along cracks and between grains • i. not in underground rivers or ponds (except in caves)

  6. 3. Porosity: volume of pore space available in a rock or sediment • i. igneous and metamorphic rocks vs. sedimentary rocks • fracturing (?) • 4. permeability: the interconnectedness of pore spaces

  7. 5. groundwater table: a line below which the pores are filled with water and above which has some air i. unsaturated zone ii. saturated zone

  8. 6. recharge and discharge i. influent vs. effluent streams

  9. 7. confined vs. unconfined aquifers 8. aquicludes 9. artesian flows: an aquifer in which water flows due to pressure as a result of it being between two aquicludes i. artesian wells

  10. 10. perched water tables

  11. Pumping water wells 1. cone of depression

  12. 2. considerations in coastal areas i. saltwater interface

  13. Water Quality 1. potable water 2. contamination of water i. Industrial ii. agriculture

  14. Karst

  15. Hydrothermal waters 1. geysers

  16. Geothermal

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