Title Processed CTD discrete observations from the Plankton Dynamics on the Africana Voyage 089, February 1991
Project Plankton Dynamics
Authors

Mbulelo Makhetha
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician;

Gavin Tutt
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician;

Tarron Lamont
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientist;

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 12 and 23 February 1991, during voyage 089 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west 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 12 Feb 1991 – 23 Feb 1991
Geographic extent
100 km
Leaflet Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012

Benguela Current Large Marine Ecosystem (BCLME)

North: -31.5
South: -33.5
West: 15.5
East: 18.5

Vertical extent Max: -1002.0 m
Min: -0.01 m
Keywords Africana, Africana 089, Conductivity, CTD, Depth, EOV: Physics > Subsurface salinity, EOV: Physics > Subsurface temperature, Neil Brown CTD, SOUTH ATLANTIC OCEAN, 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 Plankton Dynamics on the Africana Voyage 089, February 1991 (10.15493/DEA.MIMS.33072024)