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Annotated unknown underwater sounds in the Belgian part of the North Sea
Citable as data publication
Parcerisas, C.; Schall, E.; Calonge, A.; Debusschere, E.; Flanders Marine Institute; Alfred Wegener Institute; (2024): Annotated unknown underwater sounds in the Belgian part of the North Sea. Marine Data Archive.

Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.

These data are a collection of annotations from audio files from the Belgian Part of the North Sea, as a part of the LifeWatch Broadband Acoustic Network. The code to obtain the features files can be found on: GitHub - lifewatch/unknown_underwater_sounds ( The repository contains all of the codes written related to the study of annotated unknown underwater sounds in the Belgian part of the North Sea. The repository also contains scripts to obtain the results of the paper. more

Acoustic signals, especially those of biological source, remain unexplored in the Belgian part of the North Sea (BPNS). The BPNS, although dominated by anthrophony (sounds from human activities), is expected to be acoustically diverse given the presence of biodiverse sandbanks, gravel beds and artificial hard structures. Under the framework of the LifeWatch Broadband Acoustic Network, sound data have been collected since the spring of 2020. These recordings, encompassing both biophony, geophony and anthrophony, have been listened to and annotated using Raven Pro version 1.6.52 for unknown, acoustically salient sounds. Sounds of known origin which were clearly not biological were excluded. Some examples of annotated sounds from revised clusters were manually picked to define a few groups of distinct sounds in the BPNS.

Marine/Coastal, Acoustic data, Annotations, Clusters, Soundscape, Spectrograms, Underwater raw acoustic files, Unknown underwater sounds, Belgian part of the North Sea

Geographical coverage
Belgian part of the North Sea [Marine Regions]

Temporal coverage
17 March 2021 - 7 November 2022
Quasi continuous (< 1 min.)

Vlaams Instituut voor de Zee (VLIZ), moredata creator
Alfred Wegener Institute for Polar- and Marine Research (AWI), moredata creator

Related datasets
Parent dataset:
Lifewatch observatory data: Broadband acoustic sensor network in the Belgian Part of the North Sea, more
(Partly) included in:
PhD_Parcerisas: Broadband Acoustic Network dataset, more
Other relation:
PhD_Parcerisas: Broadband Acoustic Network dataset - Ambient Noise Trends in hybrid millidecade bands, more

Underwater acoustic habitat characterization of shallow marine waters, more

Dataset status: Completed
Data type: Data
Data origin: Sensor platform
Metadatarecord created: 2024-03-14
Information last updated: 2024-03-14
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy