Narragansett Bay Campus, Corless Auditorium Free Event

Free Event

Estuarine Acoustics
A seminar from Dr. Andone Lavery, Woods Hole Oceanographic Institution

Abstract: Many estuarine environments are characterized by strong spatial gradients and rapidly evolving structure that can be difficult to sample and resolve. High-frequency acoustic techniques spanning from 10s to 100s of kilohertz can resolve many of these scales and support studies of estuarine processes given that they can provide synoptic imaging, aid in discriminating between sources of acoustic backscattering, and in some cases quantify variables of interest. Here, I present results from a decade of research based on developing acoustic techniques to study estuarine acoustics, including acoustic scattering models and novel instrumentation and platforms. Measurements from the Columbia River, Connecticut River, James River, and Mobile Bay are shown, supported by other comprehensive oceanographic measurements and circulation models. The sources of backscattering observed across these sites include bubbles, turbulent microstructure, stratification, suspended sediment, and biology. I focus on the quantification of and discrimination between areas dominated by unique processes, acoustic hotspots, in addition to lessons learned regarding frequency selection and operations in estuarine environments.

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