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Broadband calibration of marine seismic sources used for academic research in the Southern Ocean: A case study with R/V Polarstern's airguns and airgun arrays

1. At earlier meetings of the Committee for environmental protection there has been discussion of the problems associated with identifying the “footprint” of acoustic sources when in use in the Southern Ocean. Whilst there have been studies on research vessels elsewhere in the world no such data appeared to exist for research vessels operating within the CCAMLR or Treaty Area. 2. Earlier papers from SCAR have urged that Parties interested in developing a deeper understanding of the possible interactions between marine mammals and acoustic systems should undertake targeted research in order to provide the relevant data on which management proposals could be based. 3. The Alfred Wegener Institute undertook a characterisation of Polarstern with a characteristic air gun array, using a calibration system established in Norway. 4. This paper was presented as a draft at the Cadiz Workshop on marine acoustics and is submitted here as an example of the research that SCAR has suggested is needed. It will be submitted for publication to a scientific journal this year.