Name: Short-term observations of hourly currents at the Walters Shoal, southwest Indian Ocean at location WSS01 (29 May 2014 - 02 August 2015)
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.35042025

Title	Short-term observations of hourly currents at the Walters Shoal, southwest Indian Ocean at location WSS01 (29 May 2014 - 02 August 2015)
Project	African Coelacanth Ecosystem Programme (ACEP)
Authors	Louw, Gavin Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician van den Berg, Marcel Department of Forestry, Fisheries and the Environment; role: Marine Scientific Technician Lamont, Tarron Department of Forestry, Fisheries and the Environment; role: Marine Scientist
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	The Walters Shoal project, part of the broader African Coelacanth Ecosystem Programme (ACEP III), conducted an oceanographic and biological survey of the Walters Shoal, a shallow seamount in the southwest Indian Ocean, in order to understand the biodiversity and ecological processes occurring on this unique seamount. The project used a multidisciplinary approach that included the sampling of sponge fauna, fish populations, and oceanographic conditions. Oceanographic data (including moored ADCP data, CTD profiles, as well as underway S-ADCP and TSG data) was collected to understand the circulation patterns and hydrography that could influence the biological communities on the seamount. Here, we present the moored ADCP data that was collected to determine currents and sub-surface temperatures. Two ADCP moorings were deployed, one on the northern part and the other on the southern part of Walters Shoal, at depths of 500m, between May 2014 and August 2015. Here we present processed magnitude and direction of hourly currents throughout the water column (51.57 - 595.57 m) from an ADCP at location WSS01 (33.29°S; 43.90°E) on Walters Shoal, between 29 May 2014 and 02 August 2015.
Methods	A bottom-mounted, upward-looking, 75 kHz RD Instruments Acoustic Doppler Current Profiler (ADCP) was configured with a bin size of 16 m and a blanking distance of 7.04 m, and deployed at location WSS01 (33.29°S; 43.90°E), at Walters Shoal, southwest Indian Ocean. The instrument measured hourly magnitude and direction throughout the water column (51.57- 595.57 m) between 29 May 2014 15h00 and 02 August 2015 05h00. These hourly values were corrected for magnetic declination. Only hourly values which showed ≥ 75 % good beam data were used.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.35042025 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	29 May 2014 – 02 Aug 2015
Geographic extent	20 km Leaflet Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012 Walters Shoal, South Africa North: -33.0 South: -33.35 West: 43.75 East: 44.0
Vertical extent	Max: -595.57 m Min: -51.57 m
Keywords	ADCP, EOV: Physics > Subsurface currents, EOV: Physics > Subsurface temperature, INDIAN OCEAN, moorings, SDG Goal 14. Conserve and sustainably use the oceans, seas and marine resources for sustainable development
Related resources	This digital object is new version of Raw ADCP Data for short-term observations of hourly currents at the Walters Shoal, southwest Indian Ocean at location WSS01 (29 May 2014 - 02 August 2015) (10.15493/DEA.MIMS.39042025) This digital object is part of Short-term observations of currents and sub-surface temperatures at the Walters Shoal, May 2014 (10.15493/DEA.MIMS.30042025)

Cite 10.15493/DEA.MIMS.35042025

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