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Title Long-term observations of hourly currents measured by DVS at SAMBA Mooring 8, April 2017 - October 2018
Project South Atlantic Meridional Overturning Circulation (SAMOC-SA)
Authors

Lamont, Tarron
Department of Forestry, Fisheries and the Environment; role: Marine Scientist

van den Berg, Marcel
Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician

Publisher Department of Forestry, Fisheries and the Environment (2021)
Contributors

Contact Person: Lamont, Tarron
Department of Forestry, Fisheries and the Environment; role: Marine Scientist; email: tlamont@dffe.gov.za

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 water column from an DVS located at a depth of 1357m at Mooring 8 (34.4991°S; 17.3019°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean, between 09 April 2017 and 09 October 2018.
Methods A subsurface-mounted, upward-looking, 2400 kHz RD Instruments Doppler Volume Sampler (DVS) was configured with a bin size of 0.8m and a blanking distance of 0.3m, and deployed at a depth of 1357m at location M8 (34.4991°S; 17.3019°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 water column between 09 April 2017 11h00 and 09 October 2018 11h00. 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 09 Apr 2017 – 09 Oct 2018
Geographic extent

Cape Basin, South Atlantic Ocean

Lat: -34.4991
Lon: 17.3019

Vertical extent Max: -1357.0 m
Min: -1357.0 m
Keywords Cape Basin , currents , Doppler Volume Sampler , DVS , 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 measured by DVS at SAMBA Mooring 8 (April 2017 - October 2018) (10.15493/DEA.MIMS.26052080)