UACE2017 Proceedings: Reliable Acoustic Path Tomography at the ALOHA Cabled Observatory

Session:
Ocean Acoustic Tomography - Various application and data
Paper:
Reliable Acoustic Path Tomography at the ALOHA Cabled Observatory
Author(s):
Vincent Varamo, Bruce Howe
Abstract:
Using a mobile ship platform (R/V Kilo Moana) with an acoustic source transmitting to a fixed bottom hydrophone at the ALOHA Cabled Observatory, we are investigating the feasibility of “RAP tomography” (Reliable Acoustic Path). This will allow the spatial mapping of a path integrated sound speed (temperature) over a 60-km diameter “teacup” volume of the ocean. We see this as a pilot project that may lead to more sophisticated acoustic measurements and configurations, e.g., spatially distributed arrays of vector sensors to provide improved performance for tomography, as well as for other purposes and replacing the ship with multiple autonomous surface vehicles such as wave gliders. Here we report on work in progress, including measurements and simulations.
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