Title Processed Expendable Bathythermograph (XBT) casts collected during the Marion Island Relief Voyage on the SA Agulhas II Voyage 062, May 2024
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 (2024)
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 59 processed Expendable Bathythermograph (XBT) casts collected along the Crossroads Transect, between 13 May 2024 and 15 May 2024, during the during the 2024 Marion Relief Voyage on the SA Agulhas II Voyage 062. 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 compliment the CTD data.
Methods Sippican WinMK21 Data Acquisition and Post-Processing Software is used for data collection of T7 Deep Blue XBT probes, rated to 1000m. The data is collected in *.bin format and then converted to *.txt files using the software. The *.txt files contain some metadata at the top of the file, but not always fully completed by operators. The processed data has been edited, using the raw text data, where temperature spikes and XBT signal loss at the end of the cast, were removed. Metadata containing cast details has been added to the top of the file for the 59 XBT casts.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 13 May 2024 – 15 May 2024
Geographic extent

Prince Edward Islands, Southern Ocean

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

Vertical extent Max: -950 m
Min: -0.5 m
Keywords Expendable Bathythermograph, INDIAN OCEAN, SA Agulhas II, SA Agulhas II 062, XBT
Related resources
  • This digital object is new version of Raw Expendable Bathythermograph (XBT) casts collected during the Marion Island Relief Voyage on the SA Agulhas II Voyage 062, May 2024 (10.15493/DEA.MIMS.07122024)
  • This digital object is part of Marion Island Relief Voyage on the SA Agulhas II Voyage 062, May 2024 (10.15493/DEA.MIMS.05122024)