1 / 13

Sinkholes

Sinkholes. Created By: Marcous Phillips. What is a sinkhole. A sinkhole is a depression in the ground that has no natural external surface drainage . Water drains to the subsurface. Causes of sinkholes. Underneath soil/rock is dissolved by groundwater flowing through the material.

jaron
Download Presentation

Sinkholes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Sinkholes Created By: Marcous Phillips

  2. What is a sinkhole • A sinkhole is a depression in the ground that has no natural external surface drainage. • Water drains to the subsurface

  3. Causes of sinkholes • Underneath soil/rock is dissolved by groundwater flowing through the material. • Human involvement

  4. Factors in sinkholes • Aquifer systems • The soil above the system is balanced by the water pressure in the aquifer. When water is removed from system it destabilizes the pressure, increasing the chance of a sinkhole forming • Higher chance in urban

  5. Factors in sinkholes • Karst Terrain • landscape formed from the dissolution of soluble rocks like limestone and gypsum. • characterized by sinkholes, caves, and underground drainage systems

  6. Types of Sinkholes • Dissolution sinkholes • ground with little overburden • Water erodes the rock away • deep impression in the ground forming a basin

  7. Types of Sinkholes • Cover-collapse sinkhole • Water erodes rock away underneath overburden • Overburden soil loses stability • Rapid and sudden collapse • Can take weeks or years to reach point of collapse

  8. Types of Sinkholes • Human involvement • Leaky pipes • Sewer leakage • Pumping of groundwater • Construction • Water diversion • These are majors in formation of a sinkhole

  9. Most Effected Areas Florida, Texas, Alabama, Missouri, Kentucky, Tennessee, and Pennsylvania are most prone.

  10. Prevention of Sinkholes • Natural Sinkholes are very hard to prevent • Human made sinkholes can be avoidable • Proper construction and maintenance of any underground pipes • Proper groundwater usage • Helps keep water table high and supports overburden • When a sinkhole occurs make sure it is kept trash free • Sinkholes usually have a direct link to drinking water which trash thrown into the sinkhole can lead to pollution of drinking water

  11. Famous Sinkholes • Guatemala City’s Sinkholes, Guatemala • Happened in 2007, 300 ft. down

  12. Famous Sinkholes • Devil’s Sinkhole, Texas, U.S.A. • 40 ft. by 60 ft. opening , 400 ft. down

  13. Sources • http://water.usgs.gov/edu/sinkholes.html • http://science.howstuffworks.com/nature/natural-disasters/sinkhole.htm • http://www.esi.utexas.edu/outreach/caves/karst.php • http://amr.edwardsaquifer.org/display_education_portal_m.php?pg=education_how_does_the_aquifer_work • www.geocaching.com • http://www.sjrwmd.com/watersupply/howsinkholesform.html • http://www.therichest.com/expensive-lifestyle/location/the-top-10-most-amazing-sinkholes-on-earth/

More Related