Name: Agulhas Bank Boundary Processes on the Africana Voyage 099, January 1992
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.48072024

Title	Agulhas Bank Boundary Processes on the Africana Voyage 099, January 1992
Authors	Alan Boyd Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), South Africa
Publisher	Department of Forestry, Fisheries and the Environment (2024)
Contributors	Project Leader: Gavin Tutt Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), email: gtsglider@gmail.com Project Leader: Tarron Lamont Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), email: tarron.lamont@gmail.com
Abstract	The Agulhas Bank Boundary Processes was conducted on the Africana Voyage 099, from 07-28 January 1992. The objectives of the cruise were to study the entrainment/loss of biota (fish eggs, larvae and plankton) along the shelf and shelf-edge by currents. This was undertaken by means of Acoustic Doppler Current Profilers (ADCP; current) measurements, and regular collection of biota with a combined bongo/calVET net with u³; to estimate the flux of the Agulhas Current along two lines by means of Conductivity, Temperature, Depth (CTD) and Expendable Bathythermograph (XBT) sections, and ADCP measurements; identification of pulses in the Agulhas Current by means of remote sensing (on board) and possible additional CTD/XBT lines to those shown in the grid map. Also a similar study of major filaments on the West Coast; to contribute to studies on the Agulhas Current influence on the South East coast shelf regions, in particular a) the Algoa Bay ecosystem, and b) the St Francis Bay ecosystem (especially the squid fishery), and c) the Eastern Agulhas Bank, South of Mossel Bay; to do a detailed study of the trophic functioning of the planktonic food-web over the entire region, by means of analysis of plankton net tows, on-board incubations, and the use of the Magnum Rosette with fluorometer; estimation of the biomass density and distribution pelagic and mesopelagic fish over the whole region, but particularly above the shelf-edge by means of acoustics and mid-water trawling; two deep midwater trawls on the South West edge of the Agulhas Bank in approximately 1000m of water to investigate species occurrence; and the retrieval of a current meter array off the Tsitsikamma coast at 34°01.35'S; 23° 43.80 'E in 40m of water.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.48072024 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	07 Jan 1992 – 28 Jan 1992
Geographic extent	North: -32.0 South: -37.5 West: 17.0 East: 30.0
Keywords	Africana, Africana 099, cruise report, sailing orders
Related resources	Digital objects included in this collection: Processed CTD continuous observations from the Agulhas Bank Boundary Processes cruise on the Africana Voyage 099, January 1992 (10.15493/DEA.MIMS.49072024) Processed CTD discrete observations from the Agulhas Bank Boundary Processes cruise on the Africana Voyage 099, January 1992 (10.15493/DEA.MIMS.50072024)

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