Title Raw underway Thermosalinograph (TSG) observations from the Algoa Voyage 257, January 2019
Authors

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

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

Marcel van den Berg
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician; contact details: email: mvdberg@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 (2023)
Contributors

Contact Person: Leon Jacobs
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician; contact details: email: leon5134@gmail.com

Abstract Here we present the 6-second resolution raw Thermosalinograph (TSG) data collected between 08 January 2019 and 25 January 2019 on the RS Algoa Voyage 257. A SeaBird SBE45 TSG is used to opportunistically collect underway near-surface temperature and conductivity measurements during research and monitoring cruises. Water is continuously pumped to the TSG from an intake located in the hull of the vessel, and the observations are continuously interfaced with navigational information. A temperature sensor close to the intake provides temperature measurements of the incoming water (T1). The temperature of the water inside the conductivity cell (T2) is used to accurately compute salinity (S) from the conductivity measurements (C).
Methods The SeaBird SBE45 Thermosalinograph (TSG) is used on the RS Algoa for the collection of underway near-surface temperature and conductivity measurements. The underway seawater is obtained from a depth of 5m below the surface and pumped through the TSG. Data is collected using the most recent SeaBird (SBE) SeaSave software and processed using the most recent SBE data processing software. The software was set to record data at 6 second intervals for the duration of the cruise, between 08 January and 25 January 2019. Data was collected in the southern part of the Agulhas Current Large Marine Ecosystem (ACLME) region on the south coast of South Africa.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 08 Jan 2019 – 25 Jan 2019
Geographic extent

Benguela Current Large Marine Ecosystem (BLMCE), Agulhas Current Large Marine Ecosystem (ACLME)

North: -33.0
South: -37.0
West: 17.0
East: 26.0

Vertical extent Max: -5.0 m
Min: -5.0 m
Keywords Algoa, Algoa 257, INDIAN OCEAN, SOUTH ATLANTIC OCEAN, THERMOSALINOGRAPH, TSG
Related resources
  • This digital object is previous version of Processed underway Thermosalinograph (TSG) observations from the Algoa Voyage 257, January 2019 (10.15493/DEA.MIMS.09882023)