LIQUEFACTION By Kyleigh Cooper.

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Presentation transcript:

LIQUEFACTION By Kyleigh Cooper

What is liquefaction? “Transformation of water-saturated granular material from the solid state to a liquid state” (Keller and DeVicchio)

Liquefaction occurs during earthquakes when the ground shakes and water particles slip into the soil. The soil then loosens and buildings, cars, etc. can fall over or sink into the earth. Liquefaction causes problems for overall safety and we might not be able to tell when small doses of liquefaction are taking place because not all earthquakes are big enough for us to feel.

How can liquefaction hazards be reduced? 3 OPTIONS… Avoid construction on soils that are susceptible to liquefaction. If building on soil that is susceptible to liquefaction is necessary, there are certain building procedures that are designed to resist liquefaction. Improve soil strength through mitigation before building. http://www.ce.washington.edu/~liquefaction/html/how/how1.html

Examples of liquefaction from the 1964 Earthquake in Niigata, japan. http://www.ce.washington.edu/~liquefaction/html/quakes/niigata/niigata.html

Examples of liquefaction in my own front yard Examples of liquefaction in my own front yard. (the cement is no longer even)

Bibliography Keller, Edward A., and Duane E. DeVecchio. Natural hazards. 3rd. Upper Saddle River, New Jersey: Pearson Education, Inc., 2012. Print. University of Washinton. (2015, March 2) Liquefaction. Retrieved from Soil Liquefaction Website. http://www.ce.washington.edu/~liquefaction/html/quakes/niigata/niigata.html