Information AboutQuicksand |
| CATEGORIES ABOUT QUICKSAND | |
| sediments | |
| geological hazards | |
| soil mechanics | |
This article is about the geological feature. For other meanings, see Quicksand (disambiguation) Quicksand is a from quicksand at a Speed of one Centimeter per Second would require the same amount of force as "that needed to lift a medium-sized car." "A. Khaldoun, E. Eiser, G. H. Wegdam and Daniel Bonn Rheology: Liquefaction of quicksand under stress " 'Nature' Vol. 437, Pg. 635, 29 September 2005 doi:10.1038/437635a It was commonly believed that the behavior of quicksand was due solely to a by the presence of salt; increasing the likelihood of sand Flocculation and the formation of the high viscocity regions of sediment responsible for quicksand's "trapping" power. Quicksand is not as dangerous as depicted in many Movie s. Because it is typically Denser than the Human Body , a person or animal will float in it. As quicksand is rarely more than a few feet deep, there is usually little danger of sinking below the surface. Furthermore, even when the quicksand is deep enough, deliberate effort is required to sink below the surface, as the human body is much more Buoyant in quicksand than in water. This was demonstrated in an episode of the TV series '' MythBusters '' and in {Link without Title} . The sand's higher density will gradually push a human body upward, eventually allowing one to paddle toward more solid footing. Typically, the greatest danger of getting stuck in quicksand comes from Exposure , Starvation , Flash Flooding , or Tidal Flooding . Quicksand can be found inland (on riverbanks, near Lake s, or in Marsh es) or near the coast. It can also form when an Earthquake increases Groundwater pressure, forcing the water to the surface and causing Soil Liquefaction . One region notorious for its quicksands is Morecambe Bay , England . As the Bay is very broad and shallow, a person trapped by the quicksand would be exposed to the danger of the returning Tide , which can come in quite rapidly. SEE ALSO REFERENCES EXTERNAL LINKS |
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