Recordings of underwater sound from sonobuoys deployed during 2021 TEMPO Voyage

• Other Authors: AADC (owner), AADC, DATA OFFICER (distributor), AADC, DATA OFFICER (custodian), AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith), Australian Antarctic Data Centre (publisher), Australian Antarctic Division (sponsor), MILLER, BRIAN SETH (collaborator), MILLER, BRIAN SETH (hasPrincipalInvestigator), MILLER, BRIAN SETH (author), Miller, B.S. (originator)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: biota; oceans; EARTH SCIENCE > OCEANS > OCEAN ACOUSTICS; OCEAN ACOUSTICS > AMBIENT NOISE; SONOBUOYS; SHIPS; AMD/AU; AMD; CEOS; OCEAN > SOUTHERN OCEAN; GEOGRAPHIC REGION > POLAR; Antarc*; Antarctic; Beaufort Sea; Crabeater Seals; Leopard Seals; Southern Ocean; Weddell Seals
• Online Access: https://researchdata.edu.au/recordings-underwater-sound-tempo-voyage/2817720

Progress Code: onGoing Statement: Only cursory quality control checks have been performed on the data, and there appear to be no major issues with the quality of the data. These data won't be publicly released until further quality control work has been completed. Purpose During TEMPO sonobuoys were deployed at 30 nmi intervals throughout the voyage to record underwater sounds of marine mammals. These recordings are part of the Predator Observation studies, and are likely to provide additional information on the presence and distribution of marine mammal species beyond that collected by visual observations. Blue whales and sperm whales in particular are known to be more commonly detected and identified acoustically than via ship-based visual observations. Acoustics recordings from sonobuoys can also provide valuable supplemental information on fin whales, humpback whales, Antarctic minke whales, southern right whales, sei whales, killer whales, leopard seals, crabeater seals, Ross seals, and Weddell seals – all of which are known to produce sounds distinctive to their species. This dataset contains acoustic recordings from Directional Frequency Analysis and Recording (DIFAR) sonobuoys that were deployed from 30 January – 23 March 2021 during the TEMPO voyage. 251 sonobuoys were deployed yielding 460 hours of acoustic recordings. Three models of sonobuoys were used during the voyage: AN/SSQ-53F sonobuoy from SonobuoyTechSystems, USA (made in 2011; identifiable by tall black housing); Q53F sonobuoys from Ultra Electronics Australia (made in 2011 for Australian Defence; identifiable by tall silver housing); SDSQ955 (HIDAR) sonobuoys from Ultra Electronics UK (re-lifed in 2018; identifiable from small silver housing); During TEMPO, recordings were made by deploying above sonobuoys in DIFAR (standard) mode while the ship was underway (Gedamke and Robinson 2010, Miller et al. 2015). During transit, listening stations were conducted every 30 nmi in water depths greater than 200 m when Beaufort sea state was less ...