Title | Short-term observations of daily bottom temperatures at the Walters Shoal, southwest Indian Ocean at location WSN01 (26 May 2014 - 01 August 2015) |
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Project | African Coelacanth Ecosystem Programme (ACEP) |
Authors |
Louw, Gavin van den Berg, Marcel Lamont, Tarron |
Publisher | Department of Forestry, Fisheries and the Environment (2025) |
Contributors |
Contact Person: van den Berg, Marcel |
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 daily bottom temperatures from an ADCP at location WSN01 (33.09°S; 43.91°E) on Walters Shoal, between 26 May 2014 and 01 August 2015. |
Methods | A bottom-mounted, upward-looking, 75 kHz RD Instruments Acoustic Doppler Current Profiler (ADCP) was deployed at location WSN01 (33.09°S; 43.91°E), at Walters Shoal, southwest Indian Ocean. A temperature sensor on the instrument measured hourly temperature readings between 26 May 2014 and 01 August 2015, at a depth of 505m. These hourly values were averaged to daily means. Daily values were only generated for days on which there were 75 % or more hourly readings. |
Data | |
Temporal extent | 26 May 2014 – 01 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 |
Vertical extent |
Max: -505 m Min: -505 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 |
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