Title Long-term observations of hourly currents along the SAMBA transect at SAMBA Mooring 4, December 2015 - April 2017
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 (2021)
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 characterize 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 hourly currents in the upper part of the water column (26.39 - 290.39m) from an ADCP located at a depth of 312m at Mooring 4 (34.29465°S; 17.8803°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean, between 30 November 2015 and 05 April 2017.
Methods A subsurface-mounted, upward-looking, 150 kHz RD Instruments Acoustic Doppler Current Profiler (ADCP) was configured with a bin size of 8m and a blanking distance of 3.52m, and deployed at a depth of 312m at location M4 (34.29465°S; 17.8803°E), along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean. The instrument measured hourly magnitude and direction in the upper part of the water column (26.39 - 290.39m) between 30 November 2015 20h00 and 05 April 2017 04h00. These hourly values were corrected for magnetic declination, and only hourly values which showed ≥ 75% good beam data were used.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 30 Nov 2015 – 05 Apr 2017
Geographic extent

Cape Basin, South Atlantic Ocean

Lat: -34.29465
Lon: 17.8803

Vertical extent Max: -26.39 m
Min: -290.39 m
Keywords ADCP, Cape Basin, currents, moorings, SAMBA, South Atlantic Meridional Overturning Circulation Basin-wide Array, SOUTH ATLANTIC OCEAN
Related resources
  • This digital object is part of Long-term moored observations from the eastern part of the South Atlantic Meridional Overturning Circulation Basin-wide Array (SAMBA) (10.15493/DEA.MIMS.26052050)
  • This digital object is version of Long-term observations of daily currents along the SAMBA transect at SAMBA Mooring 4 (December 2015 - April 2017) (10.15493/DEA.MIMS.26052057)