Passive acoustic monitoring (PAM) data were collected by recorder SV1053 of type Sono.Vault (manufactured by develogic GmbH, Hamburg, Germany) at 64.0082° S, 0.014° W, mooring AWI229-13, in the Weddell Sea, Atlantic sector of the Southern Ocean. During a deployment period from December 2016 to January 2019, passive acoustic data were collected from December 2016 to January 2017 and from May 2017 to June 2017 (recording period) by SV1053 as part of the Hybrid Antarctic Float Observing System (HAFOS) in the Weddell Sea. The recorder was moored at 1025 m depth and scheduled to record continuously at a sample rate of 6,857 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 2+ (see the associated data processing report), deviating from 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.