Acoustic data from drifts in the Belgian Part of the North Sea 2020-2021

Dataset collected to acquire underwater sound in the Belgian Part of the North Sea (BPNS) focusing on the spatial distribution. Data were obtained by hanging a hydrophone from a rope with weights while drifting. ; Between April 2020 and October 2020 and in June 2021, we recorded underwater sound at different strategic points of the Belgian Part of the North Sea (BPNS). All the recordings were acquired from a drifting small boat with a hydrophone attached to a rope with weights. The length of the rope was chosen according to the depth, so that the hydrophone would be in average more or less bet... Mehr ...

Verfasser: Parcerisas, Clea
Debusschere, Elisabeth
Flanders Marine Institute (VLIZ), Belgium, missing
Dokumenttyp: researchData
Erscheinungsdatum: 2022
Verlag/Hrsg.: MDA
Schlagwörter: Acoustic data / Drift / Geluidsleer/techniek / Hydrofonen / Onderwaterakoestiek / Sound pressure / Belgian part of the North Sea
Sprache: unknown
Permalink: https://search.fid-benelux.de/Record/base-28491771
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://biblio.ugent.be/publication/01H2ADJ8XPCNF0Q8AMB29E6FXH

Dataset collected to acquire underwater sound in the Belgian Part of the North Sea (BPNS) focusing on the spatial distribution. Data were obtained by hanging a hydrophone from a rope with weights while drifting. ; Between April 2020 and October 2020 and in June 2021, we recorded underwater sound at different strategic points of the Belgian Part of the North Sea (BPNS). All the recordings were acquired from a drifting small boat with a hydrophone attached to a rope with weights. The length of the rope was chosen according to the depth, so that the hydrophone would be in average more or less between the 1/2 and 1/3 of the top water column. The exact depth was not possible to know real-time because the plotter was turned off, so the rope length was kept constant during each entire deployment. In this manuscript, we consider a deployment the data corresponding to the time when a hydrophone is in the water without changing any recording parameter. Three different boats were used (RIB Zeekat, Sailing boat Capoeira and working boat from RV Simon Stevin). Each of these recording consists of 30 to 60 minutes of continuous recording following the current by drifting with the engines and the plotter turned off. Drifting was chosen as an ecologically meaningful approach to measure coastal benthic habitats (Lillis et al., 2018) and spatial resolution was chosen over temporal resolution considering the available ship time and equipment. The locations were chosen to cover the 5 habitat types defined in (Derous et al., 2007) as well as some shipwreck areas to capture their specific soundscapes. The objective was to acquire short recordings above different shipwrecks which would give information about acoustic spatial distribution. The recordings were acquired while drifting to diminish the possible flow noise due to the current. The instruments used where a SoundTrap ST300HF (sensitivity -172.8 dB re 1 V/uPa, from now on, SoundTrap) and a Bruel & Kjaer Nexus 2690 and a hydrophone type 8104 (sensitivity -205 dB re 1 V/uPa, ...