CTD and LADCP measurements in the Vema Fracture Zone during cruise 52 of the R/V Akademik Boris Petrov in November-December, 2022 ...

• Main Author: Dmitry Frey
• Format: Dataset
• Language: unknown
• Published: Mendeley 2025
• Subjects: Antarctic; Antarc*
• Online Access: https://dx.doi.org/10.17632/7m3yg752r9.1; https://data.mendeley.com/datasets/7m3yg752r9/1

A detailed CTD/LADCP survey in the Vema Fracture Zone was carried out during cruise 52 of the R/V “Akademik Boris Petrov” in November-December, 2022. The main objective of this survey was to measure abyssal currents of Antarctic Bottom Water and estimate its transport to the East Atlantic. The stations were located along the entire fracture zone from 39 to 46 W. A total of 46 full water depth stations (down to the bottom) were performed in the Vema Fracture Zone. The rosette system General Oceanics GO1018 included Daowan1616 Conductivity-Temperature-Depth (CTD) probe (manufactured in 2022) and Lowered Acoustic Doppler Current Profiler (LADCP; 300 kHz Teledyne RD Instruments WorkHorse Monitor with an external battery package). The velocity profiler was set in the narrowband mode, which increases the profiling range in comparison with the broadband mode and allows more reliable processing of the raw data. We set 30 vertical bins of 8 m each with 1.76 m blank distance immediately below the transducer. The ...