Title | Long-term observations of daily bottom currents along the SAMBA transect at PIES Mooring P6 (September 2013 – August 2015) |
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Project | South Atlantic Meridional Overturning Circulation (SAMOC-SA) |
Authors |
Sabrina Speich Tarron Lamont Gavin Louw Marcel van den Berg Chris Meinen Rigoberto Garcia Renellys Perez Shenfu Dong |
Publisher | Department of Forestry, Fisheries and the Environment (2023) |
Contributors |
Contact Person: Gavin Louw |
Abstract | Here we present processed northward and eastward velocity components from a 2000 khz Aanderaa Doppler Current Sensor (DCS) deployed at a depth of 5135m at location P6 (34.507°S; 07.450°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean, between 08 September 2013 and 10 August 2015. 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 single-point 2000 khz Aanderaa Doppler Current Sensor (DCS) was deployed at a depth of 5135m at location P6 (34.507°S; 07.450°E) along the South Atlantic MOC Basin-scale Array (SAMBA) transect in the Cape Basin region of the South Atlantic Ocean. The instrument measured hourly current speed and direction, between 08 September 2013 and 10 August 2015, which were processed using standard published University of Rhode Island (URI) software and protocols. Northward and eastward velocity components were subsampled to one value per day at noon (UTC), and have not been corrected for magnetic declination. |
Data | |
Temporal extent | 08 Sep 2013 – 10 Aug 2015 |
Geographic extent |
Cape Basin, South Atlantic Ocean
North: -34.507 |
Vertical extent |
Max: -5135 m Min: -5135 m |
Keywords | currents, moorings, PIES, Pressure-equipped Inverted Echo Sounder, SAMBA transect, SOUTH ATLANTIC OCEAN |
Related resources |
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