Calibration of a drifting acoustic buoy in Bjørnafjorden, Norway. Photo: Shale Rosen, Institute of Marine Research.

New publication: Application of algorithm to identify mesopelagic target types

Monday 01 Nov 21

Results from the MEESO project has been published in ICES Journal of Marine Science. 

In the article, the authors demonstrate an application of broadband acoustic data in separating North Atlantic mesopelagic scattering layers into different components.

The results highlight that what typically appears as a rather homogenous mesopelagic scattering layer in single frequency data, in reality is made up of organisms with a variety of acoustic properties, and that the composition of the layer varies in both vertical and horizontal domains.

The work represents a major step forward in using acoustic data to classify and describe horizontal and vertical patterns in the mesopelagic zone.


Application of an unsupervised clustering algorithm on in situ broadband acoustic data to identify different mesopelagic target types 
Mette Dalgaard Agersted, Babak Khodabandeloo, Yi Liu, Webjørn Melle and Thor A Klevjer
ICES Journal of Marine Science
DOI: 10.1093/icesjms/fsab167
Link to the article


Head of MEESO work package 2 
Thor Klevjer, Institute of Marine Research, Norway
3 JULY 2022