Frazil Ice

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frazil ice [′fra·zəl ‚īs]

(hydrology)

A spongy or slushy accumulation of frazil in a body of water. Also known as needle ice.

Frazil Ice

an accumulation of loose, spongy ice within a body of water (deep frazil ice) or on its surface (surface frazil ice). Frazil ice forms from tiny crystals of deep ice (intermediate and bottom ice) and from grease ice and slush. It occurs before the freeze-up when water is supercooled below 0°C, primarily on mountain rivers and rivers with rapids, below polynyas and the lower pools of hydroengineering complexes, and, occasionally, on lowland rivers and lakes.

Frazil ice, carried downstream by the current, covers large areas and dams up the channel, causing ice jams. It also considerably impedes the operation of hydroengineering structures by clogging up the filters of water intakes and the aperture grills at hydroelectrical power plants.

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No references found			COLUMN: REGIONAL DIGEST State money for ice woes finally thaws ATHOL - When the Millers River froze to a standstill in 2005 because of frazil ice buildup, the town called in many of its resources to deal with the problem. REGIONAL DIGEST by Telegram & Gazette (Worcester, MA) At times, Ship Creek would fill with frazil ice causing intake screens at the treatment plant to clog, requiring operating personnel to shovel frazil ice away from the intake. A history lesson: engineering in Alaska has come a long way by Nyman, Frank / Alaska Business Monthly			Frauds, Statute of Fraudulence Frauenfeld Fraunces, Samuel fraunhofer Fraunhofer corona Fraunhofer diffraction Fraunhofer Gesellschaft Fraunhofer Lines Fraunhofer region Fraunhofer spectrum Fraunhofer, Joseph von Fraxinus Fray Bentos Fray Jorge National Park Frayser's Farm Frazee, John Frazer Frazer, James George Frazer, Sir James George Frazer-Brace extraction method Frazier Frazier, E Franklin Frazier, Lynn Joseph frazil Frazil Ice freak Freaks Fréchet space Frechet, Maurice-Rene Fréchet, Maurice-René Fréchette, Louis Honoré freckle Freckles FRED Fred and Ethel Fred Ellis Fred Gannon Rocky Bayou State Park Fred Lawrence Whipple Observatory Fred Meijer White Pine Trail State Park Freddie Mac Fredegarius Fredegund Fredegunde Fredendall, Lloyd R. Frederic Bastiat Frederic Etienne Cournet Frédéric Étienne Cournet Frederic Mistral Frédéric Mistral Frederic Seebohm			frays frays Frayser Sports Mentorship Association Frayser's Farm FRAZ Frazee, John Frazer Frazer Frazer Amiss Memorial Trust Frazer, James George Frazer, James George Frazer, Sir James George Frazer, Sir James George Frazer-Brace extraction method Frazer-Nash Consultancy, Limited Frazier Frazier Frazier Historical Arms Museum Frazier retractor Frazier, E Franklin Frazier, Joe Frazier, Joe Frazier, Lynn Joseph Frazier-Ferguson suction tube Frazier-Spiller operation Frazier-Spiller operation Frazier-Spiller operation Frazier-Spiller operation frazil frazil Frazil Ice Frazione Organica Rifiuti Solidi Urbani frazzle frazzle frazzled frazzles frazzling FRB FRB FRB FRBA FRBB FRBC FRBCS FRBD FRBF FRBG FRBI FRBKC FRBL FRBM FRBMA FRBN FRBNY FRBO FRBOCES FRBOG FRBP

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