Title Short-term observations of daily bottom temperatures on the continental shelf in the vicinity of Algoa Bay, along the southeast coast of South Africa at location PA01 (14 December 2005 - 06 April 2006)
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 daily bottom temperatures (31m) from an Acoustic Doppler Current Profiler (ADCP) at location PA01 (33.71°S; 26.72°E) on the inner shelf off Algoa Bay, between 14 December 2005 and 06 April 2006.
Methods A bottom-mounted, upward-looking, 300 kHz RD Instruments Acoustic Doppler Current Profiler (ADCP) was deployed at location PA01 (33.71°S; 26.72°E), on the shelf of Algoa Bay, along the southeast coast of South Africa. A temperature sensor on the instrument measured hourly temperature readings between 14 December 2005 and 06 April 2006, at a depth of 31m. These hourly values were averaged to daily means. 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)
Temporal extent 14 Dec 2005 – 06 Apr 2006
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: -31 m
Min: -31 m
Keywords ADCP, Algoa Bay, Cape Recife, continental shelf, currents, EOV: Physics > Subsurface temperature, INDIAN OCEAN, moorings, Port Alfred
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 PA01 (14 December 2005 - 06 April 2006) (10.15493/DEA.MIMS.24062025)
  • 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)