Monster Seminar JAM - Acoustic monitoring of fish stocks: present, future, and potential methods
Dr. Kenneth G. Foote, Applied Ocean Physics & Engineering, Woods Hole Oceanographic Institute
Acoustic methodology for monitoring and surveying fish stocks is well established, but continues to evolve to address traditional applications better and to effect novel applications. The history of active-sonar methods is reviewed summarily, noting seminal developments in echo counting, echo integration, fish swimbladder resonance detection, Doppler and other behavioral measurement, echo statistics, sonar measurement, and calibration. Some of these are being pursued; others remain to be exploited. More recent developments are reviewed, including applications of multibeam, sidescan, and parametric sonars, as well as passive acoustic monitoring. Advances in acoustic methods are anticipated due to developments in transducer technology effecting greater bandwidth, and developments in platforms, especially underwater vehicles including gliders. Some efforts to address important issues of anthropogenic noise, such as that generated by research vessels and sonar use, with potential behavioral effects on marine life, are described.
Date and Time:
February 25, 2010,
11:00 am - 12:00 pm