Passive acoustic monitoring (PAM) data were collected by recorder SV1006 of type Sono.Vault (manufactured by develogic GmbH, Hamburg, Germany) at 59.0503° S, 0.1073° W, mooring AWI227-15, in the Weddell Sea, Atlantic sector of the Southern Ocean. During a deployment period from December 2018 to March 2022, passive acoustic data were collected from December 2018 to February 2019 (recording period) by SV1006 as part of the Hybrid Antarctic Float Observing System (HAFOS) in the Weddell Sea. The recorder was moored at 285 m depth and scheduled to record continuously at a sample rate of 24,000 Hz. Further details about the data acquisition and processing of this data set can be found in the accompanying metadata file (see Additional metadata) as well as the data processing report (see Data Processing Report). Passive acoustic data archived here represent data processing Level 1+, according to the standards defined in the associated Standard Operation Procedure (SOP) Glossary (Thomisch et al. 2023a). Further information on data processing with regard to data preparation and standardization can be found in the associated SOP Part 1: Data preparation and standardization (Thomisch et al. 2023b).

Each daily .tar contains the 10-minute audio files (.wav format) collected during the respective day.