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Seminar: Moving Ship Tomography and Passive Processing Approaches to Characterize Environmental Parameters
17 November 2021 @ 3:30 pm - 4:30 pm
Dr. Kay L. Gemba
Associate Professor of Physics
Naval Postgraduate School
Zoom Meeting Link:
Meeting ID: 935 9608 7383
Passcode: OREseminar
https://hawaii.zoom.us/j/93596087383
Passive processing approaches provide utility to characterize acoustically relevant parameters to improve environmental awareness. Of particular interest are transiting surface vessels due to their high acoustic intensity and wide-band energy. To understand quantitatively the value-added of moving ship observations, a controlled experiment was conducted in the Santa Barbara Channel in 2016. These data are used in a data-assimilation approach, initialized with an oceanographic circulation model. The estimated vertical sound-speed structure compares well with ground-truth observations. Current work focuses on translating that approach to ships of opportunity, and I also will discuss a proof-of-concept of how a recording of an uncontrolled source can be processed to inform about parameters of interest.