Data

Organic geochemistry data for surface seabed sediments in Jervis Bay, NSW (August 2008 and February 2009)

Geoscience Australia
Radke, L.
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/72033&rft.title=Organic geochemistry data for surface seabed sediments in Jervis Bay, NSW (August 2008 and February 2009)&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/72033&rft.publisher=Geoscience Australia&rft.description=Geoscience Australia carried out marine surveys in Jervis Bay (NSW) in 2007, 2008 and 2009 (GA303, GA305, GA309, GA312) to map seabed bathymetry and characterise benthic environments through colocated sampling of surface sediments (for textural and biogeochemical analysis) and infauna, observation of benthic habitats using underwater towed video and stills photography, and measurement of ocean tides and wavegenerated currents. Data and samples were acquired using the Defence Science and Technology Organisation (DSTO) Research Vessel Kimbla. Bathymetric mapping, sampling and tide/wave measurement were concentrated in a 3x5 km survey grid (named Darling Road Grid, DRG) within the southern part of the Jervis Bay, incorporating the bay entrance. Additional sampling and stills photography plus bathymetric mapping along transits was undertaken at representative habitat types outside the DRG. This 50 sample data set comprises %TOC, %TN, TOC/TN ratios, and carbon and nitrogen isotopic ratios for surface (0.0 to 2.0 cm) sediments from Jervis Bay.Maintenance and Update Frequency: asNeededStatement: Bottom sediments were collected using a small Shipek type grab sampler.This device can collect an intact sample of sediment up to 5 cm by 12 cm in area and 5 cm thick. Upon triggering, the grab immediately covers the sample, which prevents washout of fine sediment during retrieval to the surface. The surface sediments (~0 to 2 cm) within the grab were spooned into falcon vials and the porewaters were removed by centrifugation (9000 rpm; 5 minutes). The samples were then frozen for transport to the laboratories at Geoscience Australia where they were freezedried, ground in a PSZ mill and decarbonated. The decarbonated powders were sent to Environmental Isotopes Pty Ltd (Sydney) for isotopic analysis by mass spectrometry.&rft.creator=Radke, L. &rft.date=2011&rft.coverage=westlimit=150.7126; southlimit=-35.12; eastlimit=150.76; northlimit=-35.09&rft.coverage=westlimit=150.7126; southlimit=-35.12; eastlimit=150.76; northlimit=-35.09&rft_rights=&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/licenses/&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Australian Government Security ClassificationSystem&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_subject=geoscientificInformation&rft_subject=Marine Data&rft_subject=Bathymetry Grid&rft_subject=abiotic surrogates&rft_subject=geochemistry&rft_subject=marine&rft_subject=CERF&rft_subject=AU-NSW&rft_subject=Marine Geoscience&rft_subject=EARTH SCIENCES&rft_subject=GEOLOGY&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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Brief description

Geoscience Australia carried out marine surveys in Jervis Bay (NSW) in 2007, 2008 and 2009 (GA303, GA305, GA309, GA312) to map seabed bathymetry and characterise benthic environments through colocated sampling of surface sediments (for textural and biogeochemical analysis) and infauna, observation of benthic habitats using underwater towed video and stills photography, and measurement of ocean tides and wavegenerated currents. Data and samples were acquired using the Defence Science and Technology Organisation (DSTO) Research Vessel Kimbla. Bathymetric mapping, sampling and tide/wave measurement were concentrated in a 3x5 km survey grid (named Darling Road Grid, DRG) within the southern part of the Jervis Bay, incorporating the bay entrance. Additional sampling and stills photography plus bathymetric mapping along transits was undertaken at representative habitat types outside the DRG. This 50 sample data set comprises %TOC, %TN, TOC/TN ratios, and carbon and nitrogen isotopic ratios for surface (0.0 to 2.0 cm) sediments from Jervis Bay.

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Maintenance and Update Frequency: asNeeded
Statement: Bottom sediments were collected using a small Shipek type grab sampler.This device can collect an intact sample of sediment up to 5 cm by 12 cm in area and 5 cm thick. Upon triggering, the grab immediately covers the sample, which prevents washout of fine sediment during retrieval to the surface. The surface sediments (~0 to 2 cm) within the grab were spooned into falcon vials and the porewaters were removed by centrifugation (9000 rpm; 5 minutes). The samples were then frozen for transport to the laboratories at Geoscience Australia where they were freezedried, ground in a PSZ mill and decarbonated. The decarbonated powders were sent to Environmental Isotopes Pty Ltd (Sydney) for isotopic analysis by mass spectrometry.

Issued: 2011

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150.76,-35.09 150.76,-35.12 150.7126,-35.12 150.7126,-35.09 150.76,-35.09

150.7363,-35.105

text: westlimit=150.7126; southlimit=-35.12; eastlimit=150.76; northlimit=-35.09

Subjects
AU-NSW | Bathymetry Grid | CERF | Earth Sciences | Geology | Marine Data | Marine Geoscience | Published_External | abiotic surrogates | geochemistry | geoscientificInformation | marine |

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