Name: Raw underway Thermosalinograph (TSG) observations from the Transkei Shelf Oceanography Cruise on the Algoa Voyage 241, July 2017
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.09872023

Title	Raw underway Thermosalinograph (TSG) observations from the Transkei Shelf Oceanography Cruise on the Algoa Voyage 241, July 2017
Project	African Coelacanth Ecosystem Programme (ACEP)
Authors	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 Franklin Frantz Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Research Assistant; contact details: email: FFrantz@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 12 July 2017 and 14 August 2017 during the Transkei Shelf Oceanography on the RS Algoa Voyage 241. 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). The area covered by the Transkei Shelf Oceanography Cruise includes the Transkei shelf and continental slope (20m to 1000m), of the Eastern Cape, between Cape St Francis and Port Shepstone in the South-West Indian Ocean. Our knowledge of the distribution of offshore benthic biodiversity on the Transkei shelf is very limited. The region between Algoa Bay and Port Edward is not only important for understanding the functioning of existing Marine Protected Areas (MPAs) such as Pondoland, Dwesa-Cwebe, and the Amathole, but is of particular relevance to the new Operation Phakisa proposed MPA network that will potentially include additional MPAs such as the Protea Banks, Amathole Expansion, and the proposed Addo MPA.
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 . The software was set to record data at 6 second intervals for the duration of the cruise, between 12 July and 14 August 2017. Data was collected in the southern part of the Agulhas Current Large Marine Ecosystem (ACLME) region on the south east coast of South Africa.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.09872023 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	12 Jul 2017 – 14 Aug 2017
Geographic extent	Benguela Current Large Marine Ecosystem (BLMCE), Agulhas Current Large Marine Ecosystem (ACLME) North: -30.0 South: -36.0 West: 17.0 East: 32.0
Vertical extent	Max: -5.0 m Min: -5.0 m
Keywords	Algoa, Algoa 241, INDIAN OCEAN, SOUTH ATLANTIC OCEAN, THERMOSALINOGRAPH, TSG
Related resources	This digital object is part of Transkei Shelf Oceanography Cruise on the Algoa Voyage 241, July 2017 (10.15493/dea.mims.26052244) This digital object is previous version of Processed underway Thermosalinograph (TSG) observations from the Transkei Shelf Oceanography Cruise on the Algoa Voyage 241, July 2017 (10.15493/DEA.MIMS.09862023)

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