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Raw CTD data from ACEP Deep Secrets: The Outer Shelf and Slope Ecosystems of the Eastern Cape on the Algoa Voyage 230, September 2016

This is raw Conductivity, Temperature, Depth (CTD) data collected on the ACEP Deep Secrets Cruise which set out to fill in gaps and shed light on the priority areas and research questions identified during the recent Marine Protected Area and Marine Spatial Planning Initiatives of Operation Phakisa’s Marine Protection and Governance Lab. Using underwater cameras (SkiMonkey and Drop camera), grabs, dredges and a CTD the study aimed to improve our knowledge on marine offshore habitats, as well as to build understanding of the effects of the expanding fishing and petroleum industries on marine offshore communities.

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SDS data from the South Coast Mooring Cruise on the Algoa Voyage 208, July 2014

This is Scientific Data System (SDS) data collected on the South Coast Mooring Cruise on the Algoa Voyage 208, 9 to 24 July 2014. The South Coast Mooring Cruise had two scientific objectives: (1) Service, maintain and extend the in situ operational oceanography network currently deployed around South Africa and (2) to investigate the dynamics of the Port St Johns eddy and biological implications. Between 1988 and 2011, environmental and plankton sampling was conducted every summer along the South Coast during the annual pelagic spawner biomass surveys. Data collected during these cruises has provided valuable insight into environmental change in this region. There has been significant decline in copepod biomass on both the western and central Agulhas Bank over the past two decades, as well as a decline in the proportion of the large dominant species Calanus agulhensis, resulting in a shift towards a smaller copepod-dominated community. These changes are thought to have been largely...

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Raw CTD data from the Moorings and Monitoring Lines Cruise: Cape Point and Port St Johns on the Algoa Voyage 204, November 2013

This is raw Conductivity, Temperature, Depth (CTD) data from the Moorings and Monitoring Lines Cruise: Cape Point and Port St Johns on the Algoa Voyage 204, 25 November to 6 December, 2013. The South Coast Mooring Cruise had two scientific objectives: (1) Service, maintain and extend the in situ operational oceanography network currently deployed around South Africa and (2) to investigate the dynamics of the Port St Johns eddy and biological implications.

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Raw SAWS Weather data from ACEP Deep Secrets: The Outer Shelf and Slope Ecosystems of the Eastern Cape on the Algoa Voyage 230, September 2016

This is raw SAWS weather data collected on the ACEP Deep Secrets Cruise which set out to fill in gaps and shed light on the priority areas and research questions identified during the recent Marine Protected Area and Marine Spatial Planning Initiatives of Operation Phakisa’s Marine Protection and Governance Lab. Using underwater cameras (SkiMonkey and Drop camera), grabs, dredges and a CTD the study aimed to improve our knowledge on marine offshore habitats, as well as to build understanding of the effects of the expanding fishing and petroleum industries on marine offshore communities.

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SDS data from the South Coast Moorings and Monitoring Lines Cruise on the Algoa Voyage 213, December 2014

This is Scientific Data System (SDS) data from the South Coast Moorings and Monitoring Lines Cruise on Algoa Voyage 213 on 1 to 19 December, 2014. Between 1988 and 2011, environmental and plankton sampling was conducted every summer along the South Coast during the annual pelagic spawner biomass surveys. Data collected during these cruises has provided valuable insight into environmental change in this region. There has been significant decline in copepod biomass on both the western and central Agulhas Bank over the past two decades, as well as a decline in the proportion of the large dominant species Calanus agulhensis, resulting in a shift towards a smaller copepod-dominated community. These changes are thought to have been largely driven by predation by planktivorous fish, which have increased in biomass since the mid-1990s, but increasing sea temperatures have also played a role. It is vital that we continue to monitor the environment and plankton community in key areas off the...

(No DOI)
Raw SDS data from the Moorings and Monitoring Lines Cruise: Cape Point and Port St Johns on the Algoa Voyage 204, November 2013

This is raw Scientific Data System (SDS) data from the Moorings and Monitoring Lines Cruise: Cape Point and Port St Johns on the Algoa Voyage 204, 25 November to 6 December, 2013. The South Coast Mooring Cruise had two scientific objectives: (1) Service, maintain and extend the in situ operational oceanography network currently deployed around South Africa and (2) to investigate the dynamics of the Port St Johns eddy and biological implications.

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Raw SDS data from the Transkei Shelf Oceanography Cruise on the Algoa 241, July 2017

This is raw Scientific Data System (SDS) data from the Transkei Shelf Oceanography Cruise on the Algoa 241, 12 July to 11 August, 2017. The area covered includes the Transkei shelf and continental slope (20m to 1000m), of the Eastern Cape, between Cape St Francis and Port Shepstone in the South-West Indian Ocean.Our knowledge of the distribution of offshore benthic biodiversity on the Transkei shelf is very limited. The region between Algoa Bay and Port Edward is not only important for understanding the functioning of existing Marine Protected Areas (MPAs) such as Pondoland, Dwesa-Cwebe, and the Amathole, but is of particular relevance to the new Operation Phakisa proposed MPA network that will potentially include additional MPAs such as the Protea Banks, Amathole Expansion, and the proposed Addo MPA. In addition, further knowledge is needed to support decision-making about the offshore extent of the Dwesa-Cwebe MPA. The oceanography in the form of water column and energy...

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Raw SDS data from the Mooring Cruise on the Algoa Voyage 199, June 2013

This is Scientific Data System (SDS) data from the Mooring Cruise on the Algoa Voyage 199 from 29 June - 3 July, 2013. The area covered includes Slangkop, off of Cape Town, Western Cape, South Africa to Port Edward, south of Durban, KwaZulu-Natal, South Africa.

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Raw CTD data from Port St Johns Conductivity Temperature Depth (CTD) and Bathymetry Survey on Algoa Voyage 198, May 2013

Raw Conductivity, Temperature, Depth (CTD) data from Port St Johns Conductivity, Temperature, Depth (CTD) and Bathymetry Survey on Algoa Voyage 198, 8 May - 13 May, 2013. This cruise has two scientific objectives: (1) to investigate the dynamics of the Port St. Johns eddy and biological implications and (2) to investigate the existence of mesoscale eddies in the Agulhas Current. In the case of the former, Oceans & Coasts was asked to provide input to the recent spate of shark attacks off Port St. Johns. Very little is known about the oceanography except that Roberts et al (2010) discovered during a cruise a lee-trapped cyclonic eddy off Port St. Johns that caused substantial slope upwelling. The cold upwelled water is nutrient-rich and appears to provide a biological pump to the local ecosystem. This cruise will deploy an ADCP in a depth of approximately 80 m to determine the frequency of appearance of this eddy coupled with Conductivity, Temperature, Depth (CTD) lines to measure...

DOI: 10.15493/dea.mims.26052103
Short-term observations of currents and sub-surface temperatures on the continental shelf and slope off Port Edward, South Africa

Between 2005 and 2015, multiple short-term studies were conducted to determine the characteristics of moorings deployed in a region heavily influenced by the strong Agulhas Current, and to examine circulation patterns across the continental shelf and slope off Port Edward, along the east coast of South Africa.

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Tsitsikamma Middle Bank Thermistor String data from 1997 to 2011

This dataset is the hourly data from 4 STAR_ODDI Stamon underwater temperature recorders deployed at set depths of 12m; 19m; 27m and 35m as a thermistor string at Middelbank, Tsitsikamma between July 1997 and November 2011. The Latitude is: 34° 02.72'S ; Longitude is: 023° 52.51'E. Deployment Depth is 36m. Deployment/Recovery sheets for each deployment attached - extension of data file name used as identifier. Deployment/Recovery sheets for each deployment attached - deployment number used as identifier.

(No DOI)
Tsitsikamma Middle Bank raw ADCP data from 1997 to 2015

This dataset is the raw data from RDI ADCP current meters deployed at Middelbank, Tsitsikamma between March 1998 and June 2015. The Latitude is: 34° 02.72'S ; Longitude is: 023° 52.51'E. Deployment Depth is 36m.Deployment/Recovery sheets for each deployment attached - extension of data file name used as identifier. Deployment/Recovery sheets for each deployment attached - deployment number used as identifier.

DOI: 10.15493/DEA.MIMS.26052019
Long-term moored observations at the Prince Edward Island archipelago

Here we present long-term observations from the Prince Edward Island (PEI) shelf moorings. These moorings form part of the South African component of the International South Atlantic Meridional Overturning Circulation project (SAMOC-SA), which aims to characterize 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.

DOI: 10.15493/DEA.MIMS.14712023
Long-term observations of bottom temperatures at Port St. Johns, South Africa

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Port St. Johns. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15492023
Long-term observations of hourly bottom temperatures at Knysna, South Africa

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Knysna, South Africa. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15482023
Long-term observations of hourly bottom temperatures at Moheli, Comoros

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Moheli, Comoros. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15472023
Long-term observations of hourly bottom temperatures at Trou-aux-Biches, Mauritius

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Trou-aux-Biches, Mauritius. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15462023
Long-term observations of hourly bottom temperatures at Fort-Dauphin, Madagascar

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Fort-Dauphin, Madagascar. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15452023
Long-term observations of hourly bottom temperatures at Bassas da India, Mozambique Channel

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Bassas da India, Mozambique Channel. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15442023
Long-term observations of hourly bottom temperatures at Seychelles site A and B

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Seychelles site A and B. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15432023
Long-term observations of hourly bottom temperatures at Nosy Ve, Madagascar

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Nosy Ve, Madagascar. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15422023
Long-term observations of hourly bottom temperatures at North East Madagascar

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off North East Madagascar. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15252023
Long-term observations of hourly bottom temperatures at Ystervarkpunt, South Africa

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Ystervarkpunt, South Africa. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15412023
Long-term observations of hourly bottom temperatures at Port Alfred, South Africa

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Port Alfred, South Africa. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

DOI: 10.15493/DEA.MIMS.15402023
Long-term observations of hourly bottom temperatures at Mosterts Hoek, South Africa

Here we present a collection of raw and processed temperatures from Underwater Temperature Recorders (UTRs) located off Mosterts Hoek, South Africa. At selected sites around Southern Africa, UTRs have been used to obtain long-term records of bottom temperatures in the nearshore environment, at depths ranging from 2m to 34m.

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