Title Raw Expendable Bathythermograph (XBT) casts collected during the Marion Island Relief Voyage on the SA Agulhas II Voyage 045, May 2021
Project Marion Island Relief Voyage
Authors

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

Publisher Department of Forestry, Fisheries and the Environment (2023)
Contributors

Contact Person: Marcel van den Berg
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE); role: Marine Scientific Technician; contact details: email: mvandenberg.dea@gmail.com

Abstract Here we present 58 raw Expendable Bathythermograph (XBT) casts collected in the South West Indian Ridge area and along the Crossroads Transect, between 08 May 2021 and 11 May 2021, during the 2021 Marion Relief Voyage on the SA Agulhas II Voyage 045. The South African component of the international South Atlantic Meridional Overturning Circulation project (SAMOC-SA) aims to characterise the time-mean and time-varying components of the SAMOC in the South Atlantic Ocean and monitor the variability of the main Southern Ocean frontal systems associated with the Antarctic Circumpolar Current (ACC), south of Africa. The Crossroads monitoring line, directly under the altimetry track N198, is sampled annually during the Marion Relief voyages, using a combination of CTD stations and XBT casts, where the XBT casts are done, at set intervals, between CTD stations to complement the CTD data. The 2021 Marion Relief Voyage 045 offered the 9th opportunity to conduct multi-disciplinary, ship-based oceanographic research on board the SA Agulhas II en-route to, from, and around, the sub-Antarctic Prince Edward Islands.
Methods Sippican WinMK21 Data Acquisition and Post-Processing Software is used for data collection of T7 Deep Blue Expendable Bathythermograph (XBT) probes. The data is collected in *.bin format and then converted to *.txt files using software. The *.txt files contain some metadata at the top of file, but not always fully completed by operators. There is no editing done to the data in the acquisition software and so the bottom readings, where the XBT loses signal, have not been removed for the 58 XBT casts.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 08 May 2021 – 11 May 2021
Geographic extent

Prince Edward Islands, Southern Ocean

North: -34.998
South: -47.5
West: 18.5
East: 43.0

Keywords Expendable Bathythermograph, INDIAN OCEAN, SA Agulhas II, SA Agulhas II 045, XBT
Related resources
  • This digital object is part of Marion Island Relief Voyage on the SA Agulhas II Voyage 045, May 2021 (10.15493/DEA.MIMS.01102023)
  • This digital object is previous version of Processed Expendable Bathythermograph (XBT) casts collected during the Marion Island Relief Voyage on the SA Agulhas II Voyage 045, May 2021 (10.15493/DEA.MIMS.01162023)