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Introduction to Groundwater, Karst and the Edwards Aquifer

Introduction to Groundwater, Karst and the Edwards Aquifer. Water color by Kathy Rottier. Groundwater Zones. Alternate image of groundwater zones. Porosity. Permeability. Types of groundwater flow. Aquifer Recharge and Discharge. Groundwater flow timescales. Artesian groundwater systems.

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Introduction to Groundwater, Karst and the Edwards Aquifer

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  1. Introduction to Groundwater, Karst and the Edwards Aquifer Water color by Kathy Rottier

  2. Groundwater Zones

  3. Alternate image of groundwater zones

  4. Porosity

  5. Permeability

  6. Types of groundwater flow

  7. Aquifer Recharge and Discharge

  8. Groundwater flow timescales

  9. Artesian groundwater systems

  10. Water: the great dissolver and precipitator

  11. Limestone Dissolution H2O + CO2 = H2CO3 water + carbon dioxide = carbonic acid H2CO3 + CaCO3 = Ca++ + 2 HCO3- carbonic acid + calcium carbonate (limestone) = calcium ions + bicarbonate ions

  12. Karst Development: Initial Stage

  13. Karst Development: Intermediate Stage

  14. Karst Development: Late Stage

  15. Karst Terrain Mike Warton

  16. Geologic History of the Edwards Aquifer

  17. Uplifting and Earthquakes

  18. The Edwards Aquifer

  19. Barton Springs Segment (map view)

  20. Barton Springs Segment (cross-section view)

  21. Inner Space Caverns Photos by Marsha Willis

  22. Longhorn Caverns ’Photos by Larry Jayroe

  23. Photo Credit: City of Austin <http://www.ci.austin.tx.us/watershed/images/ bartonaerial.jpg>,accessed September 22, 2008

  24. Barton Springs Pool

  25. Example Hydrograph

  26. Discharge at Barton Springs January 1980 – September 2008 Source: USGS <http://waterdata.usgs.gov/tx/nwis/uv/?site_no=08155500>,accessed September 19, 2008

  27. The End Source: http://media.point2.com/p2a/htmltext/d51f/3a57/e5a5/4d13a91fbcd071034cf8/original.jpg, accessed September 22, 2008

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