ONR Distinguished Lecture Series:
"Applications of Acoustical Oceanography"
Dr. Megan S. Ballard
Research Scientist at the Applied Research Laboratories;
The University of Texas at Austin
Acoustical methods are a powerful remote sensing tool that can be applied to efficiently
monitor underwater environments, alleviating the problem of space and time aliasing associated with traditional spot measurements. In this talk, both geoacoustic inference methods as well as direct measurements of acoustic properties of the water column and seabed are applied to understand geological processes and biological systems. Field experiments in the rapidly transitioning Pacific Arctic Region and vulnerable subtropical seagrass meadows of the Gulf of Mexico are described. Each of these works represents a collaborative effort on the use of sound to make a contribution to diverse fields including physical oceanography, biology and ecology. Complimentary laboratory measurements are used to benchmark results, extend the frequency range of field measurements, calibrate sensors and devise new measurement techniques. Computational models are applied to provide insight into the effects of environmental inhomogeneities on the propagation of measured signals. Key results on the use of sound to assess critical habitats and environmentally sensitive regions will be highlighted.
This event is now closed.
When: Tuesday, November 19, 2019 11 a.m. to 12:30 p.m.
Office of Naval Research
Bobby Junker Executive Conference Center
14th Floor, One Liberty Center
875 North Randolph Street
Arlington, VA 22203
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About Megan S. Ballard
Megan S. Ballard is a research scientist at the Applied Research Laboratories, University
of Texas at Austin. Ballard received a B.S. in Ocean Engineering from Florida Atlantic University 2005 and a Ph.D. in Acoustics from Pennsylvania State University in 2009. Ballard’s research areas are related to underwater acoustic propagation modeling, geoacoustic inversion, and direct measurement of marine sediment properties. Ballard received the R. Bruce Lindsay Award from the Acoustical Society of America in 2016, the Postdoctoral Special Research Award from the Office of Naval Research in 2011, and the National Defense Science and Engineering Graduate Fellowship Award in 2006. Ballard is a fellow of the Acoustical Society of America (ASA), the past-chair of Technical Committee on Underwater Acoustics of the ASA, and assistant editor for the Proceedings of Meetings on Acoustics.