Name: Physical-Chemical Oceanography Cruise on the Africana Voyage 077, September 1989
License: https://creativecommons.org/licenses/by-sa/4.0/

DOI: 10.15493/DEA.MIMS.11872023

Title	Physical-Chemical Oceanography Cruise on the Africana Voyage 077, September 1989
Authors	Grev Nelson Oceans and Coastal Research, Department of Environment, Forestry and Fisheries (DFFE), South Africa Geoff Bailey Oceans and Coastal Research, Department of Environment, Forestry and Fisheries (DFFE), South Africa
Publisher	Department of Forestry, Fisheries and the Environment (2023)
Contributors	Project Leader: Tarron Lamont Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), email: tarron.lamont@gmail.com Project Leader: Gavin Tutt Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE), email: gtsglider@gmail.com
Abstract	The Physical-Chemical Oceanography Cruise was conducted on the Africana Voyage 077, from 11 - 22 September 1989. There were several objectives to this cruise, covering Physical Environment (PE), Sedimentation and Nutrient cycling (SN), Chemical Environment (CE), Shoal Ecology (SE), Plankton studies (P) and testing of the new AIDA acoustic system with possible estimates of biomass in specific places such as in the baroclinic jets. The cruise objectives included identifying and documenting near-surface and mid-water baroclinic jets west of Cape Columbine and Cape Town using acoustic doppler profiling and Conductivity-Temperature-Depth (CTD) data; observing currents in the upper 200m at regular intervals along the cruise track, using the Acoustic Doppler Current Profiler (ADCP); performing a 30 hour internal tide experiment at the shelf edge west of the Chamais Bay; deploying a series of current meter moorings on the Namibian remote shelf and eastern Cape Basin zones between Chamais Bay and Walvis Bay; servicing a weather station at Pelican Point; recovering a current meter array 90 miles west of Walvis Bay and re-deploying the Kiel sediment trap and current meter array at the same position; deploying the ruggedised Sea Fisheries Research Institute (SFRI) sediment traps in the vicinity of the Orange River and Conception Bay; taking box cores for on-board sediment core incubation at Conception Bay and the same Orange River Mouth site sampled in March 1989; running a set of CTD lines across the shelf to the vicinity of the shelf break; and lastly to draw samples from the labratory seawater sampling probe at regular intervals for fractionation, filtration and calibration of the in-line fluorometer.
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.11872023 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	11 Sep 1989 – 22 Sep 1989
Geographic extent	North: -22.5 South: -34.5 West: 12.0 East: 18.5
Keywords	Africana, Africana 077, cruise report, sailing orders
Related resources	Digital objects included in this collection: Processed CTD continuous observations from the Physical-Chemical Oceanography Cruise on the Africana Voyage 077, September 1989 (10.15493/DEA.MIMS.11712023) Processed CTD discrete observations from the Physical-Chemical Oceanography Cruise on the Africana Voyage 077, September 1989 (10.15493/DEA.MIMS.11722023) Raw CTD continuous observations from the Physical-Chemical Oceanography Cruise on the Africana Voyage 077, September 1989 (10.15493/DEA.MIMS.11732023)

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