Daily acoustic presence of Antarctic blue whales within a 10 km radius of mooring AWI209-06, recorder AU0086, based on passive acoustic recordings in the Weddell Sea from December 2010 to January 2013

Acoustic presence data on Antarctic blue whales (Balaenoptera musculus intermedia) were obtained from passive acoustic monitoring (PAM) data collected at 66°36.70' S and 27°07.31' W, mooring AWI209-06, recorder AU0086, between December 2010 and January 2013. The passive acoustic recorder was of type AURAL (Autonomous Underwater Recorder for Acoustic Listening (AURAL; Model 2, Multi-Électronique) and attached to oceanographic deep-sea mooring AWI209-06 of the Hybrid Antarctic Float Observation System (HAFOS). It was deployed from December 2010 to January 2013, moored at a depth of 207 m and scheduled to record on a duty cycle of 4.5 min per 3 hours at a sample rate of 32.768 Hz. After recovery, the passive acoustic data were prepared for further analysis following the Standard Operating Procedures (SOP) for PAM data collected by the Ocean Acoustics Group of AWI according to Thomisch et al. (2023a, regarding definitions and terminology) and Thomisch et al. (2023b, with regard to data preparation procedures).