Name: Short-term observations of daily currents on the continental shelf in the vicinity of Algoa Bay, along the southeast coast of South Africa at location ABay01 (06 December 2013 - 07 December 2014)
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.54042025

Title	Short-term observations of daily currents on the continental shelf in the vicinity of Algoa Bay, along the southeast coast of South Africa at location ABay01 (06 December 2013 - 07 December 2014)
Authors	Louw, Gavin Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician van den Berg, Marcel Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician Lamont, Tarron Department of Forestry, Fisheries and the Environment; role: Marine Scientist
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	Between 2005 and 2014, multiple short-term studies were conducted to determine the circulation patterns across the continental shelf in the vicinity of Algoa Bay, along the southeast coast of South Africa. One mooring (CR01) was deployed off Cape Recife at a depth of 65m, between June 2013 and December 2014. A set of four moorings (ABay01; ABay02; ABay03 and ABay04) were deployed between the mouth of Algoa Bay and the edge of the continental slope, at depths of 75m, 115m, 120m and 160m, between December 2013 and December 2014. A set of three moorings (PA01, PA02 and PA03) were deployed off Port Alfred at depths of 30m, 85m and 165m, between May 2005 and April 2006. The purpose of these moorings were to measure currents and sub-surface temperatures. Here we present processed magnitude and direction of daily currents throughout the water column (6 - 66m) from an Acoustic Doppler Current Profiler (ADCP) at location ABay01 (33.89°S; 26.18°E) on the inner shelf off Algoa Bay, between 06 December 2013 and 07 December 2014.
Methods	A bottom-mounted, upward-looking, 300 kHz RD Instruments Acoustic Doppler Current Profiler (ADCP) was configured with a bin size of 2m and a blanking distance of 1.76m, and deployed at location ABay01 (33.89°S; 26.18°E), on the shelf of Algoa Bay. The instrument measured hourly magnitude and direction throughout the water column (6 - 66m) between 06 December 2013 - 07 December 2014. These hourly values were corrected for magnetic declination. 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.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.54042025 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	06 Dec 2013 – 07 Dec 2014
Geographic extent	50 km Leaflet Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012 Algoa Bay, South Africa North: -33.5 South: -34.5 West: 25.5 East: 27.0
Vertical extent	Max: -66 m Min: -6 m
Keywords	ADCP, Algoa Bay, Cape Recife, continental shelf, EOV: Physics > Subsurface currents, INDIAN OCEAN, moorings, Port Alfred, temperature
Related resources	This digital object is new version of Raw ADCP data for short-term observations of hourly currents on the continental shelf in the vicinity of Algoa Bay, along the southeast coast of South Africa at location ABay01 (06 December 2013 - 07 December 2014) (10.15493/DEA.MIMS.93042025) This digital object is part of Short-term observations of currents and sub-surface temperatures on the continental shelf in the vicinity of Algoa Bay, along the southeast coast of South Africa (10.15493/DEA.MIMS.41042025)

Cite 10.15493/DEA.MIMS.54042025

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