Side scan sonar and swath bathymetry collected along OFOBS profiles during POLARSTERN cruise PS118 ...

• Main Authors: Hehemann, Laura, Dreutter, Simon, Purser, Autun, Dorschel, Boris, Nordhausen, Axel
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2021
• Subjects: Antarctic Peninsula; Powell basin; Weddell Sea; Antarctic; Powell Basin; Weddell; Antarc*
• Online Access: https://dx.doi.org/10.1594/pangaea.930222; https://doi.pangaea.de/10.1594/PANGAEA.930222

The Ocean Floor Observation and Bathymetry System (OFOBS), used during Polarstern research cruise PS118 to the Wedell Sea and Powell Basin, 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 OFOBS during deployments. For PS101 the OFOS was upgraded with a 85 cm tail to additionally mount an EdgeTech 2205 bathymetric side scan and BlueView M900-130 forward looking sonar systems, to become the Ocean Floor Observation and Bathymetry System (OFOBS). Auxiliary sensors include an iXBlue PHINS 6000, and an AML Micro-X 6000 SV-Xchange sound velocity probe. An ...