Marine Information Management System

DOI: 10.15493/DEA.MIMS.18072024

South Coast Demersal Biomass Survey on the Africana Voyage 093, June 1991

The South Coast Demersal Biomass Survey on the Africana Voyage 093 was conducted from 7 June 1991 to 5 July 1991. The main objectives of the cruise were to conduct a random stratified bottom trawl survey to assess the biomass, abundance and distribution of hake, sole, horse mackerel, squid and other trawl species; to investigate the hydrology and current profiles of the South Coast and to relate this to the distribution of the major demersal trawl species; this will include five transects...

DOI: 10.15493/DEA.MIMS.29112024

Short-term observations of currents and sub-surface temperatures on the continental shelf off Port St Johns, along the east coast of South Africa

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability off Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 95m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns on the east coast of South Africa.

DOI: 10.15493/DEA.MIMS.37112024

Short-term observations of hourly bottom temperatures on the continental shelf off Port St Johns, along the east coast of South Africa (December 2013 - September 2014)

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability of Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 90m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns on the east coast of South Africa. Here we present processed hourly bottom temperatures (85 m) from an...

DOI: 10.15493/DEA.MIMS.16112024

Processed CTD continuous observations from the West Coast Hake Biomass Survey on the Africana Voyage 109, January 1993

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected, between 19 January and 08 February 1993, during voyage 109 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.15112024

West Coast Hake Biomass Survey on the Africana Voyage 109, January 1993

The West Coast Hake Biomass Survey was conducted on the Africana Voyage 109 from 19 January to 08 February 1993. The objectives of the cruise were to survey by means of bottom trawling the abundance of hake and ither demersal species on the West Coast of South Africa; to investigate the environmental and ecological interrelationships of hake and other demersal species; to study the biology of chondrichthyan species; to investigate the evolution of chondrichthyan immune systems; to obtain...

DOI: 10.15493/DEA.MIMS.13112024

Processed CTD continuous observations from the Pelagic Biomass Survey on the Africana Voyage 108, November 1992

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected, between 05 November and 02 December 1992, during voyage 108 on the FRS Africana, in the Agulhas Current Large Marine Ecosystem (ACLME) region on the south coast of Southern Africa and the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water...

DOI: 10.15493/DEA.MIMS.12112024

Pelagic Biomass Survey on the Africana Voyage 108, November 1992

The Pelagic Spawner Biomass Survey was conducted on the Africana Voyage 108 from 05 November to 02 December 1992. The objectives of the survey were to get an estimation of the biomass and population length structure of anchovy, pilchard and round herring off South Africa by means of echo-integration and midwater trawling; estimation of anchovy biomass by means of the egg production method, and trial estimation of pilchard biomass by means of the egg production method; description of...

DOI: 10.15493/DEA.MIMS.10112024

Processed CTD continuous observations from the Horse Mackerel Hydroacoustic Survey on the Africana Voyage 107, October 1992

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected, between 07 October and 23 October 1992, during voyage 107 on the FRS Africana, in the Agulhas Current Large Marine Ecosystem (ACLME) on the south coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the water column during research and monitoring cruises between 1983 and 2000.

DOI: 10.15493/DEA.MIMS.09112024

Horse Mackerel Hydroacoustic Survey on the Africana Voyage 107, October 1992

The Horse Mackerel Hydroacoustic Survey was conducted on the Africana Voyage 107 from 07-23 October 1992. The objectives of the survey were to obtain a hydroacoustic estimate of horse mackerel abundance in the area between East London and Mossel Bay; to obtain acoustic estimates of anchovy and pilchard abundance east of Mossel Bay to assist in the design of the pelagic spawner biomass survey in November; to obtain a target strength/length relationship for horse mackerel and target strength...

DOI: 10.15493/DEA.MIMS.14112024

Processed CTD discrete observations from the Pelagic Biomass Survey on the Africana Voyage 108, November 1992

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected, between 05 November and 02 December 1992, during voyage 108 on the FRS Africana, in the Agulhas Current Large Marine Ecosystem (ACLME) region on the south coast of Southern Africa and the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa. Neil Brown MK3 and MK4 CTD instruments were used to measure pressure, temperature and conductivity through the...

DOI: 10.15493/DEA.MIMS.06112024

South Coast Demersal Inshore Biomass Survey on the Africana Voyage 106, September 1992

The South Coast Demersal Inshore Biomass Survey was conducted on the Africana Voyage 106 from 02 to 23 September 1992. The objectives of the survey were to conduct a stratified bottom trawl survey to assess the biomass, abundance and distribution of hake, sole, horse mackerel, squid and other trawl species with emphasis on 'inshore' fishing areas for recruitment estimates; to investigate the hydrology and current profiles of the South Coast and to relate this to the distribution pf the...

DOI: 10.15493/DEA.MIMS.03112024

Benguela Current Sources and Transport (BEST 1) on the Africana Voyage 105, June 1992

The Benguela Current Sources and Transport (BEST 1) was conducted on the Africana Voyage 105 from 16 June 1992 to 05 July 1992. The objectives of the survey was the quantification of the flux and Agulhas rings penetrating the South-East Atlantic and the influence of these on the shelf waters and resources of the Benguela system; the provision of a large-scale environmental time-series lasting for a continuous period of 18 months. This was used to validate processes inferred from satellite...

DOI: 10.15493/dea.mims.26052269

Long-term observations of nearshore temperatures around southern Africa

Since January 1990, Underwater Temperature Recorders (UTRs) have been deployed at selected sites around Southern Africa to obtain long-term records of bottom temperature in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.28112024

Raw temperature data for long-term observations of bottom temperatures at Moheli, Comoros (September 2004 - October 2007)

Here we present raw temperatures from Underwater Temperature Recorders (UTRs) located at a depth of 21m off Moheli, Comoros (12.3916°S 43.7390°E), along the east coast of Southern Africa, between 05 September 2004 and 05 October 2007. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperature in the nearshore environment, at depths ranging from 2m to 34m. Note that for some deployments, two UTRs were deployed to simultaneously record...

DOI: 10.15493/DEA.MIMS.27112024

Long-term observations of hourly bottom temperatures at Moheli, Comoros (September 2004 - October 2007)

Here we present processed hourly subsurface temperatures from Underwater Temperature Recorders (UTRs) located at a depth of 21m off Moheli, Comoros (12.3916°S 43.7390°E), along the east coast of Southern Africa, between 05 September 2004 and 05 October 2007. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperature in the nearshore environment, at depths ranging from 2m to 34m. Note that for some deployments, two UTRs were deployed to...

DOI: 10.15493/DEA.MIMS.39112024

Raw ADCP data for short-term observations of currents on the continental shelf off Port St Johns, along the east coast of South Africa (December 2013 - September 2014)

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability off Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 90m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns, on the east coast of South Africa. Here we present raw data from an ADCP at location PJ (31.73°S;...

DOI: 10.15493/DEA.MIMS.38112024

Raw ADCP Data for short-term observations of currents on the continental shelf off Port St Johns, along the east coast of South Africa (July 2013 - December 2013)

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability off Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 95m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns, on the east coast of South Africa. Here we present raw data from an ADCP at location PJ (31.73°S;...

DOI: 10.15493/DEA.MIMS.36112024

Short-term observations of daily bottom temperatures on the continental shelf off Port St Johns, along the east coast of South Africa (December 2013 - September 2014)

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability off Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 90m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns on the east coast of South Africa. Here we present processed daily bottom temperatures (85 m) from an...

DOI: 10.15493/DEA.MIMS.35112024

Short-term observations of hourly bottom temperatures on the continental shelf off Port St Johns, along the east coast of South Africa (July 2013 - December 2013)

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability of Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 95m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns on the east coast of South Africa. Here we present processed hourly bottom temperatures (90 m) from an...

DOI: 10.15493/DEA.MIMS.34112024

Short-term observations of daily bottom temperatures on the continental shelf off Port St Johns, along the east coast of South Africa (July 2013 - December 2013)

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability off Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 95m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns on the east coast of South Africa. Here we present processed daily bottom temperatures (90 m) from an...

DOI: 10.15493/DEA.MIMS.33112024

Short-term observations of hourly currents on the continental shelf off Port St Johns, along the east coast of South Africa (December 2013 - September 2014)

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability off Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 90m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns, on the east coast of South Africa. Here we present processed magnitude and direction of hourly...

DOI: 10.15493/DEA.MIMS.32112024

Short-term observations of daily currents on the continental shelf off Port St Johns, along the east coast of South Africa (December 2013 - September 2014)

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability off Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 90m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns, on the east coast of South Africa. Here we present processed magnitude and direction of daily...

DOI: 10.15493/DEA.MIMS.31112024

Short-term observations of hourly currents on the continental shelf off Port St Johns, along the east coast of South Africa (July 2013 - December 2013)

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability off Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 95m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns, on the east coast of South Africa. Here we present processed magnitude and direction of hourly...

DOI: 10.15493/DEA.MIMS.30112024

Short-term observations of daily currents on the continental shelf off Port St Johns, along the east coast of South Africa (July 2013 - December 2013)

Between 2013 and 2014, a short-term mooring deployment was conducted to determine the oceanographic characteristics and variability off Port St Johns, along the east coast of South Africa. One mooring (PJ) was deployed, at a depth of 95 m, between July 2013 and September 2014. This mooring measured currents, as well as sub-surface bottom temperatures on the continental shelf off Port St Johns, on the east coast of South Africa. Here we present processed magnitude and direction of daily...

DOI: 10.15493/DEA.MIMS.25112024

Long-term observations of hourly bottom temperatures off Trou-aux-Biches, Mauritius (March 2014 - November 2016)

Here we present processed hourly subsurface temperatures from Underwater Temperature Recorders (UTRs) located at a depth of 17.5m off Trou-aux-Biches, Mauritius (20.0284°S 57.5364°E), along the east coast of Southern Africa, between 05 March 2014 and 01 November 2016. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperature in the nearshore environment, at depths ranging from 2m to 34m. Note that for some deployments, two UTRs were...

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