surface drift

surface drift
allowing a gill net to drift in surface waters, usually with the float line at the surface

Dictionary of ichthyology. 2009.

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  • Drift mining — is either the mining of a placer deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed. Drift is a more general mining term, meaning a near horizontal passageway in a mine,… …   Wikipedia

  • Drift netting — Drift netting. Drift netting is a fishing technique where nets, called drift nets, are allowed to float freely at the surface of a sea or lake. Usually a drift net is a gill net with floats attached to a rope along the top of the net, and weights …   Wikipedia

  • Drift diving — is a type of recreational diving where the diver is transported by the currents caused by the tide or in a river. The current gives the diver the impression of flying and allows the diver to cover long distances underwater, possibly seeing more… …   Wikipedia

  • Drift ice — Drift ice, Greenland Drift ice is ice that floats on the surface of the water in cold regions, as opposed to fast ice, which is attached ( fastened ) to a shore. Usually drift ice is carried along by winds and sea currents, hence its name, drift… …   Wikipedia

  • Surface photovoltage — (SPV) measurements are a widely used method to determine the minority carrier diffusion length of semiconductors. Since the transport of minority carriers determines the behavior of the p n junctions that are ubiquitous in semiconductor devices,… …   Wikipedia

  • drift — [ drift ] n. m. • 1842; mot angl. ♦ Anglic. Géol. Dépôt laissé par le recul d un glacier. ● drift nom masculin (anglais drift, poussée) Transistor dans lequel la partie de la base en contact avec l émetteur est plus riche en électrons que le… …   Encyclopédie Universelle

  • Drift — Drift, n. [From {drive}; akin to LG. & D. drift a driving, Icel. drift snowdrift, Dan. drift, impulse, drove, herd, pasture, common, G. trift pasturage, drove. See {Drive}.] 1. A driving; a violent movement. [1913 Webster] The dragon drew him… …   The Collaborative International Dictionary of English

  • Drift of the forest — Drift Drift, n. [From {drive}; akin to LG. & D. drift a driving, Icel. drift snowdrift, Dan. drift, impulse, drove, herd, pasture, common, G. trift pasturage, drove. See {Drive}.] 1. A driving; a violent movement. [1913 Webster] The dragon drew… …   The Collaborative International Dictionary of English

  • Drift pin — drift punch In metalworking, a drift pin, drift pin punch, or simply drift, is the name for a tool used for enlarging holes, or aligning holes prior to bolting or riveting metal parts together. A drift pin is not used as a punch in the… …   Wikipedia

  • Surface Marker Buoy — (standard) = A Surface Marker Buoy, SMB or simply a blob is an inflatable buoy used by SCUBA divers, with a line, to mark the diver s position to their surface, safety boat while the diver is underwater.SMBs are inflated on the surface before… …   Wikipedia

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