The dataset comprises catch records of demersal fish and invertebrates from prawn trawl deployments completed on research voyage SS 03/2005. The survey design was a natural experiment (i.e. control-impact, but not before-after) to test the long-term, broadscale effects of prawn fishing on non-target species and habitats. Deployments were stratified by fishing intensity (three strata) and day/night. The survey was repeated in three regions: (a) north of Groote Eylandt, (b) north-east of the Vanderlins, and (c) north of Mornington Island. The number of deployments completed as part of the natural experiment was 124. Outside of the natural experiment, an additional 31 deployments were completed at dawn or dusk for diet analysis and an additional two deployments were completed for other reasons.

Samples were collected from Two Rocks offshore transect from coastal to offshore stations at five sites (A-E) during ( Feb 2002 - Dec 2004). These sites were also sampled during Southern Surveyor Voyages SS07/2003, SS01/2004. The samples were analysed for total suspended matter, absorption coefficients for dissolved and particulate matter and pigment concentration and composition. Microphytobenthos samples were collected at sites where Martin Lourey worked. Note sites A and B were the same locations from the Two Rocks coastal transect identified as T1 and T6 respectively in Marlin record 6819 SRFME Ocean Colour data. Note that this record contains data for Voyage SS07/2003 only.

This dataset contains point data describing physical properties of marine sediments as held within the Geoscience Australia Marine Sediment database (MARS) for samples acquired by marine surveys that occurred between 1905 and 2017. Samples were collected from within the Australian Exclusive Economic Zone, plus waters within Australian Antarctic Territory, waters around Christmas Island (Indian Ocean) and outside the EEZ within the Timor Sea and waters around Papua New Guinea. Samples are sourced from a range of organisations, with sampling technique, spatial accuracy and sample preservation varying between surveys. Attributes include survey ID and name, sample ID, sampling method, water depth and location information. Sediment properties include %mud, %sand, %gravel, mean grain size and texture (classified using the Folk (1954) nomenclature for sediments). There is no consistent datum and projection due to the time span, differing collecting organisations and method of measurement across the dataset. All data is referenced to WGS 84 unless stated otherwise.

This dataset contains point data describing physical properties of marine sediments as held within the Geoscience Australia Marine Sediment database (MARS) for samples acquired by marine surveys that occurred between 1905 and 2017. Samples were collected from within the Australian Exclusive Economic Zone, plus waters within Australian Antarctic Territory, waters around Christmas Island (Indian Ocean) and outside the EEZ within the Timor Sea and waters around Papua New Guinea. Samples are sourced from a range of organisations, with sampling technique, spatial accuracy and sample preservation varying between surveys. Attributes include survey ID and name, sample ID, sampling method, water depth and location information. Sediment properties include %mud, %sand, %gravel, mean grain size and texture (classified using the Folk (1954) nomenclature for sediments). There is no consistent datum and projection due to the time span, differing collecting organisations and method of measurement across the dataset. All data is referenced to WGS 84 unless stated otherwise.

This dataset contains point data describing physical properties of marine sediments as held within the Geoscience Australia Marine Sediment database (MARS) for samples acquired by marine surveys that occurred between 1905 and 2017. Samples were collected from within the Australian Exclusive Economic Zone, plus waters within Australian Antarctic Territory, waters around Christmas Island (Indian Ocean) and outside the EEZ within the Timor Sea and waters around Papua New Guinea. Samples are sourced from a range of organisations, with sampling technique, spatial accuracy and sample preservation varying between surveys. Attributes include survey ID and name, sample ID, sampling method, water depth and location information. Sediment properties include %mud, %sand, %gravel, mean grain size and texture (classified using the Folk (1954) nomenclature for sediments). There is no consistent datum and projection due to the time span, differing collecting organisations and method of measurement across the dataset. All data is referenced to WGS 84 unless stated otherwise.

This dataset contains point data describing physical properties of marine sediments as held within the Geoscience Australia Marine Sediment database (MARS) for samples acquired by marine surveys that occurred between 1905 and 2017. Samples were collected from within the Australian Exclusive Economic Zone, plus waters within Australian Antarctic Territory, waters around Christmas Island (Indian Ocean) and outside the EEZ within the Timor Sea and waters around Papua New Guinea. Samples are sourced from a range of organisations, with sampling technique, spatial accuracy and sample preservation varying between surveys. Attributes include survey ID and name, sample ID, sampling method, water depth and location information. Sediment properties include %mud, %sand, %gravel, mean grain size and texture (classified using the Folk (1954) nomenclature for sediments). There is no consistent datum and projection due to the time span, differing collecting organisations and method of measurement across the dataset. All data is referenced to WGS 84 unless stated otherwise.

This dataset contains point data describing physical properties of marine sediments as held within the Geoscience Australia Marine Sediment database (MARS) for samples acquired by marine surveys that occurred between 1905 and 2017. Samples were collected from within the Australian Exclusive Economic Zone, plus waters within Australian Antarctic Territory, waters around Christmas Island (Indian Ocean) and outside the EEZ within the Timor Sea and waters around Papua New Guinea. Samples are sourced from a range of organisations, with sampling technique, spatial accuracy and sample preservation varying between surveys. Attributes include survey ID and name, sample ID, sampling method, water depth and location information. Sediment properties include %mud, %sand, %gravel, mean grain size and texture (classified using the Folk (1954) nomenclature for sediments). There is no consistent datum and projection due to the time span, differing collecting organisations and method of measurement across the dataset. All data is referenced to WGS 84 unless stated otherwise.

This voyage provides an opportunity to test and refine optimal techniques to map and assess seabed habitat developed in a previous CMR project (NOO OP2000-SE02). Importantly, this voyage will use the National Facility's high-resolution EM300 swath mapper for its first program of biological and physical habitat mapping. The sampling locations are a number of submarine canyons and their immediately adjacent flanks on the west coast of Tasmania and east of Bass Strait. These are prime targets for our methods development because each canyon area is characterised by a great variety of seabed topography and benthic communities concentrated in a relatively small area (< 300 sq km). This voyage is also an opportunity to apply the data collected to marine resource management planning in the South East Region. Submarine canyons represent a type of habitat unit (Level 3 biogeomorphic units) having a strong influence on the location of offshore Marine Protected Areas on the continental slope and rise, and many are likely to be biodiversity hotspots. Several canyons are also the locations of the largest known aggregations of feeding and spawning fishes in the South-East Fishery region, and these support a range of intense, increasing and, in places, conflicting fishing activities. Given the immediate and increasing relevance of submarine canyons to conservation and fishery managers, it is then surprising to realize that virtually all those in the SE region remain unsampled by scientists, and are named only by commercial fishers. For these reasons, sampling on this voyage will focus on the Big Horseshoe Canyon mapped previously with the EM1002 and EM12 swath instruments (to enable comparison of data types, and to investigate temporal persistence of features), and several new areas. Mark Lewis has videos recorded on voyage and photographs of deck shots & equipment used during the trip.

In June 2005, the Southern Surveyor Research Vessel commenced a trip to the Timor Sea region. This dataset contains 9 sediment cores and grab samples analysis collected on this voyage. This dataset relates to the objectives (as outlined in the Voyage Summary SS06/2005): Discover seeps of methane, oil, and brines on the seafloor, using wheelhouse sounder showing bubble plumes, seismic transects, swath mapping, surface and near bottom water sampling, and sediment coring tools. Gas chromatographic measurements of methane in water will be done in the ship laboratory. Obtain sediment cores from soft and hard bottom seafloor, and subsample the cores carefully for hydrocarbon and inorganic chemical measurements, and preserve samples for analyses in our home laboratories. Obtain samples of relict and living biota from the seafloor in association with submarine seeps, using sled dredges, rock dredges, Smith-MacIntyre Grab, and near-bottom water samples. Chemical analysis for organic and inorganic carbon, N P and other elements were undertaken to estimate the rate of sediment accumulation, trace elements, geochemical composition of sediment and burial rate of organic and carbonate carbon. Further information and data regarding this voyage have been archived within the CSIRO Marine and Atmospheric Research Data Centre, including data from ADCP deployments, CTD Profiles, Hydrology, Underway and Multibeam echosounder data. A link to the CSIRO Data Protal is availalbe in the Related Information section below.