ESA Data Ontology: ESADO: SCANFISH

Instruments > In Situ/Laboratory Instruments > Profilers/Sounders > SCANFISH

SCANFISH

ScanFish is a towed undulating vehicle system designed for collecting profile data of the water column in oceanographic, bathymetric and environmental monitoring applications at either fixed depth or to pre- programmed undulating flight path. The ScanFish MK II is an active unit, which generates an up or down force in order to position the tow-fish in the water column. It is towed from a tow point placed in a cut in the centre line from the leading edge of the fish body. This tow point allows the cable to pivot ± 90° about a transverse axis just forward of the centre of lift providing maximum control while ensuring very good pitch stability resulting in an excellent symmetrical saw tooth profile. To give the control system feedback for the flap control, the ScanFish is equipped with pitch and roll sensors together with feedback sensors on the flaps. The feedback is also used to control the fish, so that it always flies in a horizontal position - without roll - and during launch to ensure that the fish turns itself upright and level, in case the fish was "flipped over" when lowered into the water. This instrument may carry a number of sensors measuring parameters like conductivity (salinity), temperature, pressure, fluorescence, photosynthetically active radiation (PAR) and other parameters. [Summary adapted from http://www.eiva.dk/sw316.asp] (en)

https://gcmd.earthdata.nasa.gov/kms/concept/eb4177cd-fbe6-4bb5-947b-9951353da2ef

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ESA Data Ontology