Name: Long-term observations of daily currents on the Prince Edward Island shelf at M2 (April 2024 - April 2025)
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.15802023

Title	Long-term observations of daily currents on the Prince Edward Island shelf at M2 (April 2024 - April 2025)
Project	South Atlantic Meridional Overturning Circulation (SAMOC-SA)
Authors	Lamont, Tarron Department of Forestry, Fisheries and the Environment; role: Marine Scientist van den Berg, Marcel Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician
Publisher	Department of Forestry, Fisheries and the Environment (2025)
Contributors	Contact Person: van den Berg, Marcel Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician email: Mvdberg@dffe.gov.za
Abstract	Here we present processed magnitude and direction of daily currents throughout the water column (52.26 - 252.26m) from an ADCP at location M2 (46.708°S; 37.902°E) on the Prince Edward Island shelf, between 27 April 2024 and 25 April 2025. 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.
Methods	A bottom-mounted, upward-looking, 150 kHz RD Instruments Acoustic Doppler Current Profiler (ADCP) was configured with a bin size of 8m and a blanking distance of 3.52m, and deployed at location M2 (46.708°S; 37.902°E), on the shelf between Marion Island and Prince Edward Island. The instrument measured hourly magnitude and direction throughout the water column (52.26 - 252.26m) between 27 April 2024 and 2 April 2025. These hourly values were corrected for magnetic declination, and then averaged to daily means for each depth bin. Only hourly values which showed ≥ 75% good beam data were used, and daily values were only generated for days on which there were 75% or more hourly readings.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.15802023 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	27 Apr 2024 – 25 Apr 2025
Geographic extent	1000 km Leaflet Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012 Prince Edward Islands, South Africa Lat: -46.708 Lon: 37.902
Vertical extent	Max: -252.26 m Min: -52.26 m
Keywords	Acoustic Doppler Current Profilers, ADCP, currents, INDIAN OCEAN, moorings, SOUTHERN OCEAN
Related resources	This digital object continues Long-term observations of daily currents on the Prince Edward Island shelf at M2 (April 2023 - April 2024) (10.15493/DEA.MIMS.14702024) This digital object is new version of Raw ADCP Data for long-term observations of currents on the Prince Edward Island shelf at M2 (April 2024 - April 2025) (10.15493/DEA.MIMS.15732023) This digital object is part of Long-term moored observations at the Prince Edward Island archipelago (10.15493/DEA.MIMS.26052019)

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