Combining Active and Passive Acoustics to Study Marine Mammals
2008
Miksis-Olds, Jennifer L.
The primary goal of this project is to build a combined active-passive acoustical system to study marine mammal behavior and habitat use in relation to ocean noise and oceanographic processes. The combined active-passive acoustical system will significantly enhance the contribution that ARL-PSU can make to research associated with understanding how ocean noise, physical processes, and biological processes contribute to marine mammal behavior and habitat use. Integrated data such as these will be vital in evaluating the effect of military sources operated in marine mammal habitats. The immediate goals for this project are to: 1) build three active acoustic systems to measure in situ zooplankton and fish abundance, 2) build three Passive Aquatic Listeners (PALs) for detecting marine mammal presence, and 3) integrate the separate acoustic systems into a combined mooring system capable of making synchronized measurements of an ocean region. The final product will be a set of three combined active-passive acoustical systems capable of concurrently measuring ocean noise levels and components, the presence of vocalizing marine mammals, acoustic backscatter from fish and zooplankton, and regional weather parameters (wind and precipitation).
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