CTD data from the toothfish fishery in East Antarctica

• Other Authors: AADC (originator), AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: biota; oceans; FISHERIES; EARTH SCIENCE; AQUATIC SCIENCES; CONDUCTIVITY; SALINITY/DENSITY; SALINITY; WATER TEMPERATURE; OCEAN TEMPERATURE; WATER DEPTH; BATHYMETRY/SEAFLOOR TOPOGRAPHY; CCAMLR; CTD > Conductivity Temperature Depth; SHIPS; AMD/AU; AMD; CEOS; GEOGRAPHIC REGION > POLAR; OCEAN > SOUTHERN OCEAN; Antarctic; Southern Ocean; East Antarctica; Austral; Antarc*; Antarctic Toothfish; Antarctica
• Online Access: https://researchdata.ands.org.au/ctd-toothfish-fishery-east-antarctica/1358673; https://data.aad.gov.au/metadata/records/AAS_4030_CTD_Toothfish_Fishery; https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4030_CTD_Toothfish_Fishery; https://data.aad.gov.au/eds/4774/download; https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=AAS_4030

The data files contain information on date, time, temperature (degrees C), depth (m), salinity (psu) and conductivity (mS/cm). Although the main data files have two slightly different formats for different voyages, the structure is explained in detail in the documentation. Additional files relating to the deployment of individual CTD devices is available in some cases. Documentation and a copy of the CTD instrument user manual are included, which will assist in the interpretation of data. Australian fishing vessels involved in exploratory fishing for Antarctic toothfish in East Antarctica under the auspices of the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) collected data required under their exploratory fishing permit. Conductivity, temperature and depth (CTD) loggers were attached to bottom longlines sets to collect data while fishing for Antarctic toothfish in Antarctic waters. The data relates to Objective 2 of the research work required: Collect and utilise environmental data to inform spatial management approaches for the conservation of toothfish, bycatch species and representative areas of benthic biodiversity (CCAMLR 2016). Data were collected on two fishing vessels during the austral summers (December to February) of 2015/16, 2016/17 and 2017/18 in CCAMLR Divisions 58.4.1 and 58.4.2. The data were collected with DST CTD (Conductivity, Temperature and Depth Recorder) from Star-Oddi (Conductivity: 13-50 mS/cm, maximum depth: 2400 m). Files were then downloaded with SeaStar and are available in the original data format. Recordings were made at 5 or 10 second intervals for the duration of up to around 24h, recording data throughout the water column while setting the longline and then while stationary on the sea floor. Each deployment has data on time, temperature (degrees C), salinity (psu), conductivity (mS/cm) and depth (m), and is linked to geographical coordinates. Number of deployments: 2015/16: 34 2016/17: 31 2017/18: 75 CCAMLR (2016) Joint research proposal for the Dissostichus spp. exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) by Australia, France, Japan, Republic of Korea and Spain. Delegations of Australia, France, Japan, Republic of Korea and Spain. Report to Fish Stock Assessment Working Group, WG-FSA-16/29, CCAMLR, Hobart, Australia. Dates and times in the data files are recorded in UTC. Further information is provided in a pdf document in the download file.