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ACO
MS Plan A Defense: Reliable Acoustic Path Tomography at the ALOHA Cabled Observatory: Continuing studies
Holmes Hall 243 2540 Dole Street, Honolulu, HI, United StatesSitthichat (Boris) Sukpholtham We have investigated the feasibility of Reliable Acoustic Path (RAP) tomography using a mobile ship platform (R/V Kilo Moana) and the existing acoustic infrastructure at the ALOHA Cabled Observatory (ACO). Travel times of acoustic signals traveling along direct paths between the shipboard acoustic source and the bottom-mounted hydrophones were measured. Perturbations of the travel times relative to predicted travel times were obtained, based on the CTD cast closest in time to the experiment date. Stochastic linear inversion was employed to solve for the sound speed perturbation field using the travel time perturbation measurements. This provides a spatially-dependent
PhD Defense. Of RATs and Men: Underwater passive acoustic localization investigations using relative arrival times and blind channel estimation
HIG 110 2525 Correa Road, Honolulu, HI, United StatesBrendan P. Rideout PhD Candidate Department of Ocean and Resources Engineering University of Hawai’i at Mānoa Location Information **This defense is hybrid** In person in HIG 110 Zoom meeting ID: 935 1677 2350, Passcode: ORE https://hawaii.zoom.us/j/93516772350 Please join us afterwards (~12:30 pm) in the HIG courtyard to congratulate Brendan Understanding the ecology of any organism requires an understanding of all its life stages. Underwater acoustics provides the ability to observe the submerged lives of marine mammals in ways not possible through visual means. The complexities of underwater acoustic propagation yield both challenges and opportunities to extract information from recorded data,
Seminar: Research Cruise KM-2312A,B: ACO Service and DWS Deployment
Bilger Hall 150 2545 McCarthy Mall, Honolulu, HI, United StatesClara Encke, Tyler Inkley, Kei Manabe, Will Robert, Merritt Shepherd, & Guilherme Silva Department of Ocean & Resources Engineering University of Hawai‘i at Mānoa Location Information **This seminar will be held both in person (Bilger Hall 150) and over Zoom** https://hawaii.zoom.us/j/95081858686 Meeting ID: 950 8185 8686 Passcode: OREseminar The ALOHA Cabled Observatory (ACO) 100 km north of Oahu at Station ALOHA (A Long-term Oligotrophic Habitat Assessment) is the deepest (4728 m) power and internet node on the planet, returning oceanographic data from the seafloor in realtime to shore. The ACO has been operational with plug-and-play capability since 6 June 2011.