Video footage of the benthos and accompanying oceanographic CTD data recorded along a transect at station 20-10 of RV Meteor cruise M179/2 in the Canal Beagle / Fiordo Poa (Tierra del Fuego, Chile)


A custom-built observation frame (ROVOS) based on Ocean Module V8Sii ROV (Remotely Operated Vehicle) technology was launched from RV Meteor and towed along a 286 m transect in the Beagle Channel in front of the Poa Fjord, staring in a depth of 136 m progressing slope downward to a depth of 155 m. The sandy and muddy seabed is home to only very little benthos.The instrument was equipped with three cameras with different perspectives: one HD camera (Kongsberg oe14-502, 720p50) pointed isometrically forward at an angle of 22.5° to the horizon, the second 4k camera (SubC Imaging Mk6, 2160p25) was oriented downward and an observation camera (Bowtech L3C-650-L, 240p24) provided a low-resolution view forward. Environmental data was recorded with a CTD (RBR Maestro), which included sensors for chlorophyll a, turbidity, oxygen, pH and PAR in addition to standard instruments for conductivity, temperature and pressure. Additional CTD data are available from water profiles (Schwalfenberg, in preparation). The position of the ROVOS was recorded with the ship's own Posidonia USBL. The global orientation with respect to magnetic north was determined with an internal IMU device. To determine the true image scale on the high-resolution footage, a series of reference lasers indicating 10 cm were used in addition to an altimeter (Tritech) providing acoustically measured heights from the SubC camera to the seabed (see metadata).

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Metadata Access
Creator Owsianowski, Nils ORCID logo; Laudien, Jürgen ORCID logo; Richter, Claudio ORCID logo
Publisher PANGAEA
Publication Year 2022
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints);
OpenAccess false
Resource Type Dataset
Format text/tab-separated-values
Size 13 data points
Discipline Earth System Research
Spatial Coverage (-69.685W, -54.846S, -69.683E, -54.846N); South Pacific Ocean
Temporal Coverage Begin 2022-01-29T14:08:00Z
Temporal Coverage End 2022-01-29T15:05:00Z