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Corers
36 record(s)
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draft
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The remote Kimberley coast of north-western Australia is one of the few marine environments domains on earth largely unaffected by human use. However, the region is undergoing increasing economic importance as a destination for tourism and significant coastal developments associated with oil and gas exploration. The objective of the project was to reconstruct a timeline of inferred water quality changes from the sediment record for a selected set of sites in the Kimberley, Western Australia. The project made use of palaeoecological approaches to reconstruct a chronology of change over the last approximately 100 years using a series of biogeochemical proxies for phytoplankton composition and biomass, temperature and terrestrial influences. Where possible these were matched to historical land/water use, meteorological or hydrological observational records. The project examined sediment cores from three coastal locations, Koolama Bay (King George River), Cygnet Bay and Roebuck Bay. Each sampling location provided a contrast with which to evaluate changes over either a spatial or temporal gradient of human or natural influence. Sediment cores (up to 1.5 m) were obtained from each of these locations in the expectation that they would provide a time series for about the last 100 years. A set of parameters was measured along the core length (every 1-2 cm) for some or all cores depending on the particular focus for the location: 210Pb and 137Cs; 15N isotope; 13C isotope; Carbon/Nitrogen ratio; Sedimentation rate and grain size; Total Organic Carbon (TOC) and Total Nitrogen (TN); Biosilicate; Biomarkers; TEX86; long chain n-alkanes (C27+C29+C31); Elemental carbon (or black carbon). Rainfall data was obtained from the Australian Bureau of Meteorology website (www.bom.gov.au). Stream flow data was obtained from the Western Australian Department of Water website (www.water.wa.gov.au). Historical bushfire data was obtained from the Western Australian Department of Parks and Wildlife. The metadata record only relates to data generated as part of the sediment analysis.
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This collection includes ice cores and associated air samples from Antarctica and Greenland. Ice cores are collected from various sites including Law Dome Antarctica. Data files are kept on depth, age, chemical composition and gas compositions of the ice cores. The ice cores samples are archived and stored at Breeze Logistics (Cold Storage), Clayton, VIC. These samples are part of a series including Australian Antarctic Division Ice Cores (Hobart)and Greenland Ice Cores (Copenhagen). The data associated with this collection can be accessed through the World Data Center(WDC) for Paleoclimatology http://www.ngdc.noaa.gov/wdc/usa/paleo.html.
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The dataset comprises sediment data for samples taken from box core deployments completed on research voyage SS 03/2005. The recorded sediment properties include gravel, sand, mud and carbonate content. 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.
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This record describes the deep-sea sediment core products produced by Holder et al. (2020) from two sites in the Sabrina Coast continental slope and rise, the first sedimentary sequences investigated in this region of the East Antarctic. The cores were used to study changes in the oceanic and depositional environment and their interaction with the nearby Totten Glacier. The two archives show clear variations between glacial and interglacial phases over the last 350 Kyrs, driven by the movement of the ice sheet advancing and retreating over the continental shelf and ocean circulation patterns that deliver heat either close to the Antarctic coastline or further away from the continental slope. This research provided a foundation for future palaeoceanographic work in the region and suggested that warm oceanic conditions, similar to today, have influenced the Sabrina Coast during past warm interglacials over the last 350 Kyrs. For more details please refer to the cited article (download link provided below): Holder, L., M. Duffy, B. Opdyke, A. Leventer, A. Post, P. O’Brien and L. K. Armand (2020): Controls on Sedimentation and Primary Productivity in Late Pleistocene Slope Sediments Seaward of the Totten Glacier, East Antarctica. Paleoceanography, under review.
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The dataset comprises catch records of infauna from box core 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 123.
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Data was collected on Southern Surveyor voyage SS 04/2003. The voyage took place in Northern Queensland coastal waters and the Gulf of Carpentaria during May - June 2003. The data was culminated in a Post cruise report. Access to this report is available via the links below.
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This dataset contains data from pollution monitoring in Jervis Bay, NSW. The data were obtained from various sites around Jervis Bay at different times between October 1988 and July 1991. Samples for trace metals from sediments were determined, together with grain size. Mercury in the tissues of Red morwong (Cheilodactylus fuscus), Oysters (Ostrea angasi), Mussels (Trichomya hirsuta) and heavy metals in the leaves of Posidonia australis and Zostera sp. were determined. Organochlorides and hydrocarbons from sediments, water column and biota were also determined. Tributyl tin experiments were conducted in tanks. The data are part of the Jervis Bay Marine Ecological Study. NB - As the database has been lost, the only data still available are those published in the JERVIS BAY BASELINE STUDIES Final Report.
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This dataset contains seagrass productivity and distribution data from Jervis Bay, NSW. The data were obtained between October 1988 and July 1991. Aerial photographs and ground truthing data were used to map the boundaries and distribution of the seagrass meadows. Digitised seagrass maps have been merged with the mangrove and saltmarsh maps (Chapter 2) to create 13 maps of the marine and estuarine habitats of Jervis bay. Taxa identified two species that form large meadows and two other species that occur in Jervis Bay. Experiments on seagrass restoration were conducted and also at the CSIRO Marine Laboratories in Marmion, Western Australia. The data are part of the Jervis Bay Marine Ecological Study. NB - As the database has been lost, the only data still available are those published in the JERVIS BAY BASELINE STUDIES Final Report.
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This dataset contains species distribution, abundance and identity data of benthic invertebrates from Jervis Bay, NSW. Infauna samples from Posidonia australis seagrass beds were sampled at 4 sites and unvegetated subtidal sediments were obtained from 6 sites between October 1988 and July 1991. Taxa identified consisted of 248 species of arthropods, 197 species of molluscs, 171 species of polychaetes, 15 species of echinoderms and a few other animals. Results of the study has shown that the infauna of both the seagrass beds and unvegetated sediments in Jervis Bay is rich and diverse. The data are part of the Jervis Bay Marine Ecological Study. NB - As the database has been lost, the only data still available are those published in the JERVIS BAY BASELINE STUDIES Final Report.
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This record describes the sediment data collected from the Marine National Facility RV Investigator Event Voyage IN2015_E02, departing Hobart on the 7th April and returning to Hobart on the 14th April, 2015. The primary voyage objective was to deploy a specific sub-set of sampling equipment related to benthic biology, to establish processes, procedures and work flows in places such as the rear deck and sample processing laboratories. The primary equipment trialled was the MNF Deep Tow Camera, MNF Beam trawl, MNF Benthic (Sherman) Sled, and MNF Smith-McIntyre Grab, and the CSIRO-supplied Integrated Corer Platform (ICP), DeepBRUVs lander, and fishing dropline. The Integrated Coring Platform ( ICP) combines a number of technologies to maximise sampling in a single deployment. The ICP is built around a 6 barrel corer (KC, Denmark) and together with its central electronics module integrates cameras (cable, seafloor and corer views), CTD (SBE37IDO), altimeter, 120KHz scientific echo-sounders, Niskin bottles and hydrocarbon sensor suite. Sensor data is delivered in real time to the surface via fibre optic deployment cable. Video data from the ICP cameras includes imagery of seafloor types and mid-water biota during the up/down casts, refer to related marlin record for video data access. This metadata record describes the sediment collection using the grab and ICP taken inside the Huon Commonwealth Marine Reserve at 5 depth strata (100m, 200m, 500m, 1000m and 2000m) and on Patience seamount. Sediment samples were collected for chemical (CSIRO Energy), grainsize and composition (SARDI) analyses; surface water was also collected for PAH (polycyclic aromatic hydrocarbons ) analysis by NMI (National Measurements Institute). Bulk samples of sediments were elutriated for macrofauna analysis (University of Adelaide).