Seabed video and still images from the northern Weddell Sea and the western flanks of the Powell Basin.

Research vessels equipped with fibre optic and copper-cored coaxial cables support the live onboard inspection of high-bandwidth marine data in real time. This allows for towed still-image and video sleds to be equipped with latest-generation higher-resolution digital camera systems and additional sensors. During RV Polarstern expedition PS118 in February-April 2019, the recently developed Ocean Floor Observation and Bathymetry System (OFOBS) of the Alfred Wegener Institute was used to collect still-image and video data from the seafloor at a total of 11 predominantly ice-covered locations in the northern Weddell Sea and Powell Basin. Still images of 26-megapixel resolution and HD (high-definition) quality video data were recorded throughout each deployment. In addition to downward-facing video and still-image cameras, the OFOBS also mounted side-scanning and forward-facing acoustic systems, which facilitated safe deployment in areas of high topographic complexity, such as above the steep flanks of the Powell Basin and the rapidly shallowing, iceberg-scoured Nachtigaller Shoal. To localise collected data, the OFOBS system was equipped with a Posidonia transponder for ultra-short baseline triangulation of OFOBS positions.


Publication status:
Authors: Purser, A., Dreutter, S., Griffiths, H. ORCIDORCID record for H. Griffiths, Hehemann, L., Jerosch, K., Nordhausen, A., Piepenburg, D., Richter, C., Schroder, H., Dorschel, B.

On this site: Huw Griffiths
23 February, 2021
Earth System Science Data / 13
7pp / 609-615
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