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Hjulström effect

Hjulström effect The contrast between the flow velocity at which a fine-grained cohesive sediment, may be deposited and that at which it will be eroded. F. Hjulström published an important diagram which plots the relationship between grain size and velocity for erosion, transportation, deposition, and settling velocity. One of the many important consequences of these relationships is that although fine-grained cohesive sediments (fine silt and clay) will be deposited only if flow velocities are very low, a very high velocity is required to erode the same sediment, once deposited. This is because of the cohesive nature of the sediment, which makes silt and clay more difficult to erode than pebbly sediment.

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"Hjulström effect." A Dictionary of Earth Sciences. . Encyclopedia.com. 13 Dec. 2017 <http://www.encyclopedia.com>.

"Hjulström effect." A Dictionary of Earth Sciences. . Encyclopedia.com. (December 13, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/hjulstrom-effect

"Hjulström effect." A Dictionary of Earth Sciences. . Retrieved December 13, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/hjulstrom-effect

Hjulstrom effect

Hjulstrom effect The contrast between the flow velocity at which a fine-grained, cohesive sediment may be deposited and that at which it will be eroded. Although fine-grained cohesive sediments (fine silt and clay) will be deposited only if flow velocities are very low, a very high velocity is required to erode the same sediment, once deposited. This is because of the cohesive nature of the sediment, which makes silt and clay more difficult to erode than pebbly sediment.

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"Hjulstrom effect." A Dictionary of Ecology. . Encyclopedia.com. 13 Dec. 2017 <http://www.encyclopedia.com>.

"Hjulstrom effect." A Dictionary of Ecology. . Encyclopedia.com. (December 13, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/hjulstrom-effect-0

"Hjulstrom effect." A Dictionary of Ecology. . Retrieved December 13, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/hjulstrom-effect-0