Name: Long-term observations of hourly currents at SAMBA Mooring 4 (October 2020 - July 2022)
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.15672023

Title	Long-term observations of hourly currents at SAMBA Mooring 4 (October 2020 - July 2022)
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 Louw, Gavin Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician
Publisher	Department of Forestry, Fisheries and the Environment (2025)
Contributors	Contact Person: van den Berg, Marcel Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician email: Mvdberg@dffe.gov.za
Abstract	Here we present processed magnitude and direction of hourly currents in the upper part of the water column (27.78 - 291.78m) from an ADCP located at a depth of 320m at M4 (34.2942°S; 17.8792°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean, between 03 October 2020 and 16 July 2022.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.
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 320m at location M4 (34.2942°S; 17.8792°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 (27.78 - 291.78 m) between 03 October 2020 16h00 and 16 July 2022 12h00. 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) Cite 10.15493/DEA.MIMS.15672023 Style Terms of use These data are made available with the express understanding that any such use will properly acknowledge the originator(s) and publisher and cite the accession numbers and/or associated Digital Object Identifiers. Anyone wishing to use these data should properly cite and attribute the data providers listed as authors in the metadata provided with each dataset. It is expected that all the conditions of the data license will be strictly honoured. Use of any material herein should be properly cited using the dataset’s persistent identifiers such as accession numbers and DOIs. I agree to the terms of use
Temporal extent	03 Oct 2020 – 16 Jul 2022
Geographic extent	1000 km Leaflet Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012 Cape Basin, South Atlantic Ocean Lat: -34.2942 Lon: 17.8792
Vertical extent	Max: -291.78 m Min: -27.78 m
Keywords	ADCP, currents, moorings, SOUTH ATLANTIC OCEAN
Related resources	This digital object continues Long-term observations of hourly currents at SAMBA Mooring 4 (October 2018 - September 2020) (10.15493/DEA.MIMS.01592023) This digital object is new version of Raw Acoustic Doppler Current Profiler (ADCP) data for long-term observations of currents at SAMBA Mooring 4 (October 2020 - July 2022) (10.15493/DEA.MIMS.15512023) 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)

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