Forward looking sonar data collected along OFOBS profiles during POLARSTERN cruise PS101 (ARK-XXX/3) ...

• Main Authors: Dreutter, Simon, Purser, Autun, Hehemann, Laura, Boetius, Antje
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Event label; Date/Time of event; Latitude of event; Longitude of event; Elevation of event; Date/Time of event 2; Latitude of event 2; Longitude of event 2; Elevation of event 2; File size; Uniform resource locator/link to file; Ocean Floor Observation and Bathymetry System; Forward looking sonar systems, BlueView, M900-130; PS101; Polarstern; FRontiers in Arctic marine Monitoring FRAM; Arctic; Langseth
• Online Access: https://dx.doi.org/10.1594/pangaea.874128; https://doi.pangaea.de/10.1594/PANGAEA.874128

The Ocean Floor Observation System (OFOS), used during Polarstern research cruise PS101 to the Langseth Ridge in the Central Arctic, was a towed underwater camera system equipped with both a high-resolution photo-camera (iSiTEC, CANON EOS 5D Mark III) and a high-definition video-camera (iSiTEC, Sony FCB-H11). The cameras were mounted on a steel frame (150L x 92W x 105H cm), together with two strobe lights (iSiTEC UW-Blitz 250, TTL driven), three parallel laser pointers spaced with a distance of 50 cm used to estimate the size of seafloor structures, four LED lights, and a USBL positioning system (Posidonia) to track the position of the OFOS during deployments. For PS101 the OFOS was upgraded to additionally mount an EdgeTech 2205 bathymetric side scan and a BlueView M900-130 forward looking sonar systems, to become the Ocean Floor Observation and Bathymetry System (OFOBS). The M900-130 has a total horizontal opening angle of 130°, divided into 512 beams of 0.18° x 20° (horizontal x vertical). It operates at ...