Title Long-term observations of daily currents on the Prince Edward Island shelf at Mooring 1 (April 2014 - April 2015)
Project South Atlantic Meridional Overturning Circulation (SAMOC-SA)
Authors

Tarron Lamont
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), South Africa Marine Scientist 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, tlamont@environment.gov.za

Marcel van den Berg
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), South Africa Marine Scientific Technician 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, mvdberg@environment.gov.za

Publisher Department of Forestry, Fisheries and the Environment (2020)
Contributors

Contact Person: Tarron Lamont
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), South Africa Marine Scientist 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, tarron.lamont@gmail.com

Abstract 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.
Methods 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.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 08 Apr 2014 – 18 Apr 2015
Geographic extent

Prince Edward Islands, Southern Ocean

Lat: -46.775
Lon: 37.902

Vertical extent Max: -21.48 m
Min: -149.48 m
Keywords Acoustic Doppler Current Profiler, ADCP, current velocity, INDIAN OCEAN, moorings, Prince Edward Islands, shelf, Southern Ocean
Related resources
  • This digital object is part of Long-term moored observations at the Prince Edward Island archipelago (10.15493/DEA.MIMS.26052019)