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Integrated Measurements Of Acoustical And Optical Thin Layers I: Vertical Scales Of Association, Kelly J. Benoit-Bird, Mark A. Moline, Chad M. Waluk, Ian C. Robbins

Biological Sciences

This study combined measurements from multiple platforms with acoustic instruments on moorings and on a ship and optics on a profiler and an autonomous underwater vehicle (AUV) to examine the relationships between fluorescent, bioluminescent, and acoustically scattering layers in Monterey Bay during nighttime hours in July and August of 2006 and May of 2008. We identified thin bioluminescent layers that were strongly correlated with acoustic scattering at the same depth but were part of vertically broad acoustic features, suggesting layers of unique composition inside larger biomass features. These compositional thin layers nested inside larger biomass features may be a common …