Title Processed CTD discrete observations from the South Coast Demersal Biomass Survey on the Africana Voyage 102, April 1992
Project South Coast Demersal Biomass Survey
Authors

Mbulelo Makhetha
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician; contact details: email: MMakhetha@dffe.gov.za

Gavin Tutt
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician; contact details: email: Gtutt@dffe.gov.za

Tarron Lamont
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientist; contact details: email: tlamont@dffe.gov.za

Publisher Department of Forestry, Fisheries and the Environment (2024)
Contributors

Contact Person: Gavin Tutt
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician; contact details: email: gtsglider@gmail.com

Abstract Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 31 March and 21 April 1992, during voyage 102 on the FRS Africana, in the Agulhas Current Large Marine Ecosystem (ACLME) region on the south coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.
Methods Neil Brown MK3 and MK4 Conductivity-Temperature-Depth (CTD) instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000. Temperature was converted from the IPTS-68 scale to the ITS-90 scale, and salinity was computed from conductivity measurements on the 1978 Practical Salinity Scale, according to UNESCO (1991) algorithms. UNESCO (1993) quality control procedures were applied to the data, and obvious erroneous values resulting from problems including electronic spikes, data collection in air, inadequate flow through the conductivity cell, among others, have been removed. Any additional calibrations or corrections have been specified in each data file, where applicable and available.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 01 Apr 1992 – 20 Apr 1992
Geographic extent

Agulhas Current Large Marine Ecosystem (ACLME)

North: -33.5
South: -37.0
West: 20.0
East: 27.5

Vertical extent Max: -556.0 m
Min: -2.0 m
Keywords Africana, Africana 102, Conductivity, CTD, Depth, INDIAN OCEAN, Neil Brown CTD, Temperature
Related resources
  • This digital object is described by https://unesdoc.unesco.org/ark:/48223/pf0000090489
  • This digital object is described by https://unesdoc.unesco.org/ark:/48223/pf0000138825
  • This digital object is part of South Coast Demersal Biomass Survey on the Africana Voyage 102, April 1992 (10.15493/DEA.MIMS.57072024)