Daily acoustic presence of Antarctic blue whales within a 10 km radius of mooring AWI230-08, recorder SV1009, based on passive acoustic recordings in the Weddell Sea from December 2012 to September 2013

DOI

Acoustic presence data on Antarctic blue whales (Balaenoptera musculus intermedia) were obtained from passive acoustic monitoring (PAM) data collected at 66°02.12' S and 00°02.98' E, mooring AWI230-08, recorder SV1009, between December 2012 and September 2013. The passive acoustic recorder was of type Sono.Vault (manufactured by develogic GmbH, Hamburg, Germany) and attached to oceanographic deep-sea mooring AWI230-08 of the Hybrid Antarctic Float Observation System (HAFOS). It was deployed from December 2012 to December 2014, moored at a depth of 949 m and recorded continuously at a sample rate of 5,333 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). Daily acoustic presence of Antarctic blue whales was assessed based on automated detections of Z-call vocalizations by spectrogram cross-correlation using a pre-defined spectrogram template in a frequency band from 17.5 to 29 Hz. Received levels were obtained for each detected Z-call, as sound pressure level SPLrms [dB re: 1μPa] within the 25–29 Hz band of each detected Z-call event, for details on automated detection please refer to Thomisch et al. (2016). To avoid a spatial mismatch between the actual position of calling animals and the recorders, ABW detections were filtered to only keep detections that originated from within a ~10 km radius of the respective recording sites. Assuming a source level of 189 dB re: 1μPa over 25–29 Hz and a spherical transmission loss TL[dB] = 20log₁₀(r), approximate distances between vocalizing Antarctic blue whales and the respective recording site locations were estimated for each detected Z-call. Daily acoustic presences were estimated as days with at least one detection event within a ~10 km radius of the respective recording sites; i.e., Z-calls with calculated received levels of ≥109 dB, considering a nominal TL of 80 dB. Data presented in this publication series were used together in presence-only species distribution models (SDMs) to predict the year-round habitat suitability of Antarctic blue whales in the Weddell Sea (El-Gabbas et al., under review). Data contain information on the detection time and the estimated received level SPLrms [dB re: 1μPa] for each Antarctic blue whale vocalization within a ~10 km radius of recorder SV1009, mooring site AWI230-08.

Identifier
DOI https://doi.org/10.1594/PANGAEA.960113
Related Identifier IsPartOf https://doi.org/10.1594/PANGAEA.959969
Related Identifier References https://doi.org/10.3354/esr00739
Related Identifier IsDocumentedBy https://doi.org/10.5281/zenodo.7620763
Related Identifier IsDocumentedBy https://doi.org/10.5281/ZENODO.7680029
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.960113
Provenance
Creator Thomisch, Karolin ORCID logo; El-Gabbas, Ahmed (ORCID: 0000-0003-2225-088X); Spiesecke, Stefanie; Boebel, Olaf ORCID logo
Publisher PANGAEA
Publication Year 2023
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 584 data points
Discipline Acoustics; Engineering Sciences; Mechanical and industrial Engineering; Mechanics and Constructive Mechanical Engineering
Spatial Coverage (0.050 LON, -66.035 LAT); Lazarev Sea
Temporal Coverage Begin 2013-01-12T16:07:20Z
Temporal Coverage End 2013-09-27T15:40:26Z