739 datasets found Page 16 of 30
DOI: 10.15493/DEA.MIMS.16072024
Processed CTD continuous observations from the Anchovy Recruitment Survey on the Africana Voyage 092, May 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 May and 24 May 1991, during voyage 092 on the 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.45062025
Processed underway Thermosalinograph (TSG) observations from the Integrated Ecosystem Programme: Southern Benguela (IEP: SB) cruise on the Algoa Voyage 288, December 2022

Here we present the 6-second resolution processed TSG data collected between 05 December 2022 and 09 December 2022, during Voyage 288 on the Algoa. A SeaBird SBE45 Thermosalinograph (TSG) is used to opportunistically collect underway near-surface temperature and conductivity measurements during research and monitoring cruises. Water is continuously pumped to the TSG from an intake located in the hull of the vessel, and the observations are continuously interfaced with navigational information. A temperature sensor close to the intake provides temperature measurements of the incoming water (T1). The temperature of the water inside the conductivity cell (T2) is used to accurately compute salinity (S) from the conductivity measurements (C).

DOI: 10.15493/DEA.MIMS.48072024
Agulhas Bank Boundary Processes on the Africana Voyage 099, January 1992

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...

(No DOI)
Raw SADCP data for the South Atlantic Meridional Overturning Circulation Basin-wide Array (SAMBA) Monitoring Line in the South-East Atlantic Ocean on Algoa Voyage 210, September 2014

This is raw Shipboard Acoustic Doppler Current Profiler (SADCP) data for the South Atlantic Meridional Overturning Circulation Basin-wide Array (SAMBA) Monitoring Line in the South-East Atlantic Ocean on Algoa Voyage 210,15 to 29 September, 2014. This cruise had a primary scientific objective of extending the SAMBA mooring line, the offshore section of the Cape Point long-term monitoring line, and deploying the four offshore tall moorings.

(No DOI)
Raw NDS data from the St Helena Bay Monitoring Line (SHBML) on the Algoa Voyage 193, January 2013

This is raw Network Data System (NDS) data from the St Helena Bay Monitoring Line January 2013 cruise (now under the Integrated Ecosystem Programme: Southern Benguela). The St Helena Bay Monitoring Line was initiated as a BENEFIT-driven project on "shipboard monitoring" which linked with similar lines run in Namibia and Angola. The aims are to obtain seasonal and interannual information on the hydrology and productivity of the area. Data on harmful algal blooms, low oxygen water and intrusions of Agulhas Bank water along the west coast will also be collected. A long-term, multi-decadel time-series (from 1951 onward) of information already exists for this important region and has continued in the form of the IEP:SB to detect long-term changes in the hydrology and the plankton, which are important for the detection of regime shifts.

(No DOI)
Raw SADCP data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 209, August 2014

This is raw Shipboard Acoustic Doppler Current Profiler (SADCP) data from the Integrated Ecosystem Programme: Southern Benguela on the Algoa Voyage 209, 5 to 15 August, 2014. The Integrated Ecosystem Programme: Southern Benguela (IEP:SB) is a multi-disciplinary, multi-institutional platform to undertake relevant science in the Southern Benguela; also functioning as a platform for collaboration and learning. All projects aim to develop an ecosystem indicator that can be used to effectively monitor and understand the Southern Benguela i.e physical, chemical, planktonic, microbial, seabird and benthic ecosystem indicators, used for ecosystem-based management. IEP:SB focuses on the biologically productive, cold waters of the Benguela Current Large Marine Ecosystem, which are inherently variable on short time-scales and responsive to changing weather patterms. The research aims to provide relevant, reliable and improved assessment of the ecosystem, in support of its effective...

DOI: 10.15493/DEA.MIMS.26042025
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Microplankton monitoring along the west coast of South Africa

Microplankton, comprising of both phyto- and zooplankton in the 20-200μm size range, are a diverse and ecologically important group. They form the foundation of the food web, are instrumental in carbon and nutrient cycling, generate at least 50% of global oxygen and facilitate energy flow to higher trophic levels. Although they are found in all oceans globally, their diversity and abundance is varied. Due to their high sensitivity and rapid response to changes in the environment, their biomass and diversity are considered Essential Ocean Variables (EOV's) for routine and sustained long term observations to assess global ocean changes. This dataset forms part of the routine monitoring along the west coast of South Africa - Integrated Ecosystem Programme: Southern Benguela which occurs biannually in February and August. This resource contains raw image data for February 2018 obtained from water samples processed using a FlowCam VS3. The dataset comprises all images obtained of both...

DOI: 10.15493/DEA.MIMS.07512023
Processed underway Thermosalinograph (TSG) observations from the Algoa Voyage 254, November 2018

Here we present the 6-second resolution processed thermosalinograph (TSG) data collected, between 01 November and 14 November 2018, during Voyage 254 on the RS Algoa. A SeaBird SBE45 Thermosalinograph (TSG) is used to opportunistically collect underway near-surface temperature and conductivity measurements during research and monitoring cruises. Water is continuously pumped to the TSG from an intake located in the hull of the vessel, and the observations are continuously interfaced with navigational information. A temperature sensor close to the intake provides temperature measurements of the incoming water (T1). The temperature of the water inside the conductivity cell (T2) is used to accurately compute salinity (S) from the conductivity measurements (C). The West Coast Whale Cruise was conducted on the Algoa Voyage 254 between 1 and 14 November 2018. The cruise operated between the shelf, slope and offshore regions (<2000m depth) off the west coast of South Africa, between Cape...

DOI: 10.15493/DEA.MIMS.54072024
Pelagic Pre-Recruit Mesopelagic Biomass Survey on the Africana Voyage 101, March 1992

The Pelagic Pre-Recruit Mesopelagic Biomass Survey was conducted on the Africana Voyage 101 from 11-23 March 1992. The objectives of the cruise were to get an estimation of the biomass and population structure of pelagic pre-recruit fish off the West Coast by means of echo-integration and midwater trawling; to get an estimation of a pelagic pre-recruit biomass index using quantitative Methot trawls; to get an an estimation of the biomass and population structure of mesopelagic fish using echo-integration and midwater trawling; to investigate the behaviour of pelagic pre-recruit fish in relation to oceanographic variables; to collect biological material for age, oil content, diet and condition studies on pelagic pre-recruits; to profile currents by means of the acoustic doppler current profiler; and to test the feasibility of using a towed transducer for the acoustic assessment of pelagic pre-recruits.

DOI: 10.15493/DEA.MIMS.05092022
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Processed imagery data collected off the western margin's deep-sea environment on Algoa Voyage 246, February 2018

The aim of the Integrated Ecosystem Program (IEP) Benthic Project is to establish a baseline for epi-benthic invertebrate distribution, in order to identify benthic indicators for long-term monitoring within the pre-determined IEP monitoring lines. Ten stations were successfully surveyed, on board the R/V Algoa in February 2018, using a towed under-water benthic camera. The acquired abundance data represents five stations from the Kleinsee transect, four from Namaqua and one from St Helena Bay.

DOI: 10.15493/DEA.MIMS.25072024
Processed CTD continuous observations from the West Coast Hake Biomass Survey on the Africana Voyage 084, July 1990

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 12 July and 06 August 1990, during voyage 084 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.09072024
Processed CTD continuous observations from the Anchovy Recruitment Survey on the Africana Voyage 081, May 1990

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 and 12 May 1990, during voyage 081 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.47062025
Processed underway Thermosalinograph (TSG) observations from the Integrated Ecosystem Programme: Southern Benguela (IEP: SB) cruise on the Algoa Voyage 299, February 2024

Here we present the 6-second resolution processed TSG data collected between 13 February 2024 and 22 February 2024, during Voyage 299 on the Algoa. A SeaBird SBE45 Thermosalinograph (TSG) is used to opportunistically collect underway near-surface temperature and conductivity measurements during research and monitoring cruises. Water is continuously pumped to the TSG from an intake located in the hull of the vessel, and the observations are continuously interfaced with navigational information. A temperature sensor close to the intake provides temperature measurements of the incoming water (T1). The temperature of the water inside the conductivity cell (T2) is used to accurately compute salinity (S) from the conductivity measurements (C).

DOI: 10.15493/DEA.MIMS.31072024
Processed CTD continuous observations from the West Coast Hake Biomass Survey on the Africana Voyage 088, January 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 and 29 January 1991, during voyage 088 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.

(No DOI)
Preliminary processed CTD continuous observations from the Algoa Voyage 246, February 2018

SeaBird CTD Conductivity-Temperature-Depth (CTD) instruments were used to measure pressure, temperature and conductivity through the water column. During some cruises additional instruments for oxygen, fluorescence, Photosynthetically Available Radiation (PAR), Surface PAR (SPAR), turbidity, beam attenuation, beam transmission measurements were connected to the CTD unit. Here we present preliminary processed downcast CTD continuous data collected between 15 February 2018 and 22 February 2018, during Voyage 246 on the Algoa, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of South Africa. This data was collected as part of the Intergrated Ecosystem Programme: Southern Benguela (IEP:SB), which has been conducting multi-disciplinary long-term monitoring along the Kleinsee, Namaqualand, Elands/St Helena Bay and Scarborough transects off the west coast of South Africa since 2013.

DOI: 10.15493/dea.mims.26000011
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St Helena Bay Monitoring Line (SHBML) on the Ellen Kuzwayo Voyage 085, March 2011

This St Helena Bay Monitoring Line (SHBML) cruise was conducted on the Ellen Kuzwayo Voyage 085 in March 2011. This is a long-term monitoring line conducted off the coast of Elands/St Helena Bay on the west coast of South Africa. SHBML started in 2000 as a BENEFIT-driven project on "shipboard monitoring" which linked with similar lines run in Namibia and Angola. The aims were to obtain seasonal and interannual information on the hydrology and productivity of the area. It was incorporated under the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) in 2013 consolidating a long-term, multi-decadal time-series (from 1951 onward) of information for this important region and has continued monitoring in the form of the IEP:SB. The programme is a multi-disciplinary, collaborative and capacity building platform undertaking relevant science, including updating technology, with the aim to develop ecosystem indicators that can be used to effectively monitor and understand the Southern...

(No DOI)
Processed CTD data from the Mooring Cruise on the Algoa Voyage 199, June 2013

This is processed Conductivity, Temperature, Depth (CTD) 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. This dataset was processed using older standards which may not align with international best practices and the standards currently adhered to by the Department of Forestry, Fisheries and the Environment (DFFE). The Department is re-processing and replacing data to ensure everything has the same format and is of the same quality and datasets will be marked as obsoleted once that is done. As such the user assumes the entire risk related to the use of these data in its current state and format. DFFE disclaims all warranties of the data whether expressed or implied, including without limitation, any warranties of merchantability or fitness for a particular purpose. For any concerns regarding the data, the...

(No DOI)
State of the oceans around South Africa: 2012

Please note: 1. This report has not been peer-reviewed; 2. The conditions of use outlined in the report are superseded by the conditions specified by the License field in this metadata record; 3. The contact information included in the report is superseded by the contact information that can be found in the Responsible Parties field of this metadata record.This series of internal annual reports was introduced in December 2006 for purposes of establishing general principles (such as annual cycles) and long-term trends (which may provide insight into local effects of global warming and climate change). The reports are also intended to provide an overview of marine environmental conditions prevailing during the preceding year, which may be of relevance to the management of South Africa’s marine and coastal resources. To this end, use is made of data from a variety of sources, including web sites, satellite sensors, the South African Weather Service, coastal and moored instruments, and...

(No DOI)
Raw SDS data from Gough Island Relief on SA Agulhas II Voyage 017, September 2015

This is raw Scientific Data System (SDS) data from the SA Agulhas II voyage 017, Gough Island Relief 03 September 2015 to 06 October 2015. The Gough Island Relief Voyage is an annual cruise undertaken by the Department of Environmental Affairs (DEA) to change the overwintering team in Gough Island and to replenish the supplies at the British’s leased Gough Island Research base. The cruise also serves as a means to transport the residents and/or visitors to Tristan da Cunha using a signed agreement between South Africa and United Kingdom (UK). This voyage was to deliver the Gough 61 team to the island and return with the Gough 60 team. The scope of ship-based science for this takeover voyage was limited to underway observations and SAWS drifting buoy deployments.

DOI: 10.15493/DEA.MIMS.43072024
Processed CTD continuous observations from the Horse Mackerel Hydroacoustic Pilot Survey on the Africana Voyage 096, October 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 14 and 28 October 1991, during voyage 096 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa and the Agulhas Current Large Marine Ecosystem (ACLME) region 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.47072024
Processed CTD discrete observations from the Pelagic Biomass Survey on the Africana Voyage 097, November 1991

Here we present processed Conductivity-Temperature-Depth (CTD) discrete data from the upcast collected between 07 November and 03 December 1991, during voyage 097 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa, and the Agulhas Current Large Marine Ecosystem (ACLME) region 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.46072024
Processed CTD continuous observations from the Pelagic Biomass Survey on the Africana Voyage 097, November 1991

Here we present processed downcast Conductivity-Temperature-Depth (CTD) continuous data collected between 07 November and 03 December 1991, during voyage 097 on the FRS Africana, in the Benguela Current Large Marine Ecosystem (BCLME) region on the west coast of Southern Africa, and the Agulhas Current Large Marine Ecosystem (ACLME) region 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.

(No DOI)
Raw SDS data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 216, May 2015

This is Scientific Data System (SDS) data from the Integrated Ecosystem Programme: Southern Benguela on the Algoa Voyage 216, 06 to 15 May, 2015. The Integrated Ecosystem Programme: Southern Benguela is a multi-disciplinary, multi-institutional platform to undertake relevant science in the Southern Benguela; also functioning as a platform for collaboration and learning. All projects aim to develop an ecosystem indicator that can be used to effectively monitor and understand the Southern Benguela i.e physical, chemical, planktonic, microbial, seabird and benthic ecosystem indicators, used for ecosystem-based management.

(No DOI)
No Download
Raw CTD data from the West Coast Cetacean Distribution and Abundance Survey on the Algoa Voyage 219, October 2015

This is raw Conductivity, Temperature, Depth (CTD) data from the West Coast Cetacean Distribution and Abundance Survey on the Algoa Voyage 219, 28 October to 06 November 2015. The cruise operated on the shelf and slope regions off the west coast of South Africa, between Dassen Island and Groenriviermond.This cruise was undertaken for data collection as part of a collaborative project led by the Department of Environmental Affairs (DEA) in collaboration with the Whale Unit, Mammal Research Institute of the University of Pretoria, Department of Agriculture, Forestry and Fisheries (DAFF), National Oceanic and Atmospheric Administration (USA), Aqualie Institute (Brazil) and Oregon State University (USA). The greater programme is titled "The ecology of Humpback whales Megaptera novaeangliae in South Africa" and has two components, the east coast and west coast components. This cruise focused on the west coast humpback whales.

(No DOI)
South African Weather Service (SAWS) data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on Algoa Voyage 220, November 2015

This is South African Weather Service (SAWS) data from the Integrated Ecosystem Programme: Southern Benguela on Algoa Voyage 220, 18 - 25 November 2015. The Integrated Ecosystem Programme: Southern Benguela is a multi-disciplinary, multi-institutional platform to undertake relevant science in the Southern Benguela; also functioning as a platform for collaboration and learning. All projects aim to develop an ecosystem indicator that can be used to effectively monitor and understand the Southern Benguela i.e physical, chemical, planktonic, microbial, seabird and benthic ecosystem indicators, used for ecosystem-based management.

739 datasets found Page 16 of 30

Geographic extent

Temporal extent