Title Processed Expendable Bathythermograph (XBT) casts collected during the 2017 Marion Relief Voyage on SA Agulhas Voyage 024
Project Marion Island Relief Voyage
Authors

Marcel van den Berg
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Marine Scientific Technician 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, mvdberg@environment.gov.za

Publisher Department of Forestry, Fisheries and the Environment (2020)
Contributors

Contact Person: Marcel van den Berg
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Marine Scientific Technician 2nd Floor, Foretrust Building, Martin Hammerschlag Way, Cape Town, South Africa, marcel@oceanafrica.com

Abstract 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. Here we present 34 processed XBT casts collected along the Crossroads Transect, between 06 May 2017 and 11 May 2017, during the 2017 Marion Relief Voyage.
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 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 end of cast, were removed. Metadata containing cast details has been added to the top of the file for the 34 XBT casts.
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 06 May 2017 – 11 May 2017
Geographic extent

Prince Edward Islands, Southern Ocean

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

Vertical extent Max: -0.5 m
Min: -950.0 m
Keywords AGU024, Crossroads monitoring line, INDIAN OCEAN, Marion Island Relief Voyage, Prince Edward Islands, SA Agulhas II, SA Agulhas II 024, SAMOC-SA, South Atlantic Meridional Overturning Circulation, temperature, XBT
Related resources
  • This digital object is derived from Raw Expendable Bathythermograph (XBT) casts collected during the 2017 Marion Relief Voyage on SA Agulhas Voyage 024 (10.15493/dea.mims.26052156)
  • This digital object is part of Marion Island Annual Relief Voyage on the SA Agulhas II Voyage 024, April 2017 (10.15493/dea.mims.26052207)