Raw data from Triaxus topAWI (towed ocean profiler of the AWI) during MERIAN cruise MSM93

• Main Authors: von Appen, Wilken-Jon, Hofmann, Zerlina, Mathieu, Laura, Hagemann, Jonas, Engicht, Carina, Kuhlmey, David, Becker, Hauke
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: AC3; Arctic Amplification; AWI_PhyOce; Binary Object; Binary Object (File Size); File content; FRAM; Fram Strait; FRontiers in Arctic marine Monitoring; GPF 18-1_33; Iceland Sea; Maria S. Merian; MSM93; MSM93_103-1; MSM93_103-2; MSM93_105-1; MSM93_105-2; MSM93_106-1; MSM93_21-1; MSM93_49-1; MSM93_71-1; MSM93_97-1; MSM93_97-2; North Greenland Sea; Physical Oceanography @ AWI; TOPR; Towed Ocean Profiler; Triaxus; Greenland; Greenland Sea; Iceland; North Greenland
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.940002; https://doi.org/10.1594/PANGAEA.940002

The MacArtney Triaxus extended version is a remotely operated towed vehicle (ROTV). It is towed behind the ship between 2 and 10 knots and can undulate in a saw tooth pattern between a few meters below the surface and 350m depth. The umbilical provides power and a fiber optic link to sensors that are mounted on the Triaxus (see SensorWeb). The data collected by the sensors were recorded on separate computers, one computer per sensor (including the flight information from the Triaxus itself). Thus, there are 7 separate data streams saved in separate folders plus a folder with metadata information about the different dives. During long Triaxus operations, new data files would be started approximately every 4 hours, because some of the employed software programs do not allow for backing up of the files while they are still being written to. A front in the open ocean region in the vicinity of the ice edge in Fram Strait was searched for with a ~100km long constant depth Triaxus transect on July 8. When a front had been found, it was surveyed in 3D by parallel UCTD sections and drifters were deployed. The front was followed until July 16 with the repeat of parallel UCTD and Triaxus sections. In total 17 sections were occupied with the Triaxus.