- area swept
In reference to a demersal trawl, it is the area of the sea floor over which the net is dragged during its operation, and is estimated by multiplying the width of the net mouth by the distance the net is dragged. From data on the densities of fish caught in a unit area swept, an estimate of the biomass in that part of the sea can be obtained.
Fisheries — dictionary. Aardward. 2004.
Look at other dictionaries:
area swept — the area of the sea floor over which the fishing gear such as a trawl is dragged during its operation. The area is equal to the effective horizontal opening of the gear multiplied by the distance the gear has covered during the period of time… … Dictionary of ichthyology
swept area — See area swept … Fisheries — dictionary
Area rule — The Whitcomb area rule, also called the transonic area rule, is a design technique used to reduce an aircraft s drag at transonic and supersonic speeds, particularly between Mach 0.75 and 1.2. This is one of the most important operating speed… … Wikipedia
Swept wing — A swept wing is a wing planform common on high speed aircraft, with the wing swept back instead of being set at right angles to the fuselage. This is a useful drag reducing measure for aircraft flying just below the speed of sound. Forward sweep… … Wikipedia
Swept Area — In reference to a wind energy conversion device, the area through which the rotor blades spin, as seen when directly facing the center of the rotor blades … Energy terms
Orders of magnitude (area) — An area of one square kilometre consists of 100 hectares each containing 10000 square metres. This page is a progressive and labeled list of the SI area orders of magnitude, with certain examples appended to some list objects. List of orders of… … Wikipedia
Geology of the Death Valley area — The exposed geology of the Death Valley area presents a diverse and complex story that includes at least 23 formations of sedimentary units, two major gaps in the geologic record called unconformities, and at least one distinct set of related… … Wikipedia
Geology of the Lassen volcanic area — The geology of the Lassen volcanic area presents a record of sedimentation and volcanic activity in the area in and around Lassen Volcanic National Park in Northern California, U.S.. The park is located in the southernmost part of the Cascade… … Wikipedia
Joint Security Area — Infobox Korean name| |caption=The JSA in 1973 hangul=공동경비구역 hanja=共同警備區域 rr=Gongdong Gyeongbi Guyeok mr=Kongdong Kyŏngbi Kuyŏk The Joint Security Area (JSA) or Panmunjeom, often called the Truce Village in both the media [… … Wikipedia
Joseph E. Ibberson Conservation Area — Geobox Protected Area name = Joseph E. Ibberson Conservation Area native name = other name = other name1 = category local = Pennsylvania State Park category iucn = III image caption = etymology type = Named for etymology = the donor, Joseph E.… … Wikipedia