Long-term observations of daily currents on the Prince Edward Island shelf at Mooring 1 (April 2014 - April 2015) ...

• Main Authors: Tarron Lamont, Marcel van den Berg
• Format: Dataset
• Language: English
• Published: Department of Forestry, Fisheries and the Environment 2020
• Subjects: -21.48; -149.48; m; Mean sea level; onGoing; license; oceans; South Atlantic Meridional Overturning Circulation SAMOC-SA; INDIAN OCEAN; ADCP; Prince Edward Islands; Southern Ocean; shelf; moorings; current velocity; Acoustic Doppler Current Profiler; WGS 84; textTable; Antarc*; Antarctic; Marion Island; South Atlantic Ocean; Prince Edward Island
• Online Access: https://dx.doi.org/10.15493/dea.mims.26052020; https://api.odp.saeon.ac.za/catalog/MIMS/go/10.15493/DEA.MIMS.26052020

The South African component of the international South Atlantic Meridional Overturning Circulation project (SAMOC-SA) aims to characterise the time-mean and time-varying components of the SAMOC in the South Atlantic Ocean and monitor the variability of the main Southern Ocean frontal systems associated with the Antarctic Circumpolar Current (ACC), south of Africa. Here we present processed magnitude and direction of daily currents throughout the water column (21.48-149.48 m) from an ADCP at location M1 (46.775°S; 37.902°E) on the Prince Edward Island shelf, between 8 April 2014 and 18 April 2015. ... : A bottom-mounted, upward-looking, 150 kHz RD Instruments Acoustic Doppler Current Profiler (ADCP) was configured with a bin size of 8 m and a blanking distance of 3.52 m, and deployed at location M1 (46.775°S; 37.902°E), on the shelf between Marion Island and Prince Edward Island. The instrument measured hourly magnitude and direction throughout the water column and these hourly values were corrected for magnetic declination, and then averaged to daily means for each depth bin. Only hourly values which showed ≥ 75% good beam data were used, and daily values were only generated for days on which there were 75% or more hourly readings. The data were then formatted in a .txt file with data values separated by commas. ...