show temporal patterns within the echo traces that are generated by fish swimming through the beam. For upstream migrating salmon, these patterns resemble the shape of caterpillars... in the range extent covered by the fish image. Each caterpillar leg coincides with a consistent position of the tail within the tail beat cycle. The time interval between successive peaks... migrating salmon.Data provided by Debby Burwen, Alaska Department of Fish and Game. DIDSON movie clip of a sockeye-sized salmon (at 16 m range) and a Chinook salmon (at 15 m range).Data...

Aquacoustics Clients HomeProjectsClientsMiscellaneousAbout UsContact Us Clients Alabama Power Company, Birmingham, AL Alaska Department of Fish and Game, Division of Commercial... Fisheries, AK Alaska Department of Fish and Game, Sport Fish Division, AK BioSonics, Inc., Seattle, WA Confederated Tribes of Warm Springs, Warm Springs, OR Department of Fisheries... Associates, Inc., Anchorage, AK LGL Limited, Sidney, BC, Canada Madison Paper Industries, Madison, ME Minnesota Department of Natural Resources, MN Mississippi Cooperative Fish...

in the field of fisheries acoustics. We have over 25 years of experience using sonar technology to assess the abundance and distribution of fish and to study their behavior and habitat... applications are fish stock assessment, monitoring fish behavior at hydroelectric dams or other man-made structures, and mapping bathymetry and substrate type for habitat studies.... Our services cover project design project management data collection (imaging, split-beam and side-scan sonar) acoustic data processing and analysis (fish tracking, echo integration...