Advanced Sampling Technologies Research Group Videos   Introduction to Underwater Video Operations      Underwater video operations are routinely conducted during NEFSC fisheries acoustic surveys to identify acoustic targets. The underwater video system is typically deployed by portable winch as the vessel drifts over backscattering layers. The system includes stereo video with attitude sensor that provides us with the ability to determine the in-situ 3-dimensional orientation of acoustical targets. The individual acoustic measurement of a given organism can vary by its orientation and behavior. Future research will apply this capability towards validating theoretical backscattering models for various species. Self-contained video systems have also been developed for attachment to our midwater trawl operations to examine gear selectivity. Video Description Cruise Code Date Deployment # File Size File Type Herring Nose Up Position DE200109 9/10/01 207 1,327 KB MPG Herring in Horizontal Position DE200109 9/10/01 207 1,326 KB MPG Herring Spawning DE200109 10/10/01 212 1,329 KB MPG Herring Spawning 2 DE200109 10/10/01 212 1,324 KB MPG Herring Nose Down Position DE200109 11/10/01 226 1,326 KB MPG Herring Loosely Scattered DE200101 2/17/01 47 1,331 KB MPG Herring Near Bottom DE200101 2/19/01 55 1,331 KB MPG Herring Feeding DE199708 Fall 1997 2 1,330 KB MPG Herring Feeding 2 DE199708 Fall 1997 2 1,332 KB MPG Shark Feeding on Herring DE199708 Fall 1997 2 617 KB MPG Shark DE199708 Fall 1997 9 521 KB MPG Herring School DE199708 Fall 1997 9 1,326 KB MPG Top