Data

Sources of Turbidity in Torres Strait Waters

Australian Ocean Data Network
Harris, Peter, Dr ; Baker, Elaine, Dr
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/038b8050-2f52-11dc-a71c-00188b4c0af8&rft.title=Sources of Turbidity in Torres Strait Waters&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/038b8050-2f52-11dc-a71c-00188b4c0af8&rft.description=This report gives details of laboratory analyses carried out by the Ocean Sciences Institute on behalf of the Maritime Systems Division, Defence Science and Technology Organisation. The terms of reference for the study were as follows: 1. To make grain size analyses by Malvern Laser Diffraction Particle Sizer on 6 water samples;2. To compare and contrast the clay mineralogy of filtered water samples with core samples from the Great North East Channel and Fly River mouth using combination of X-ray diffraction and energy dispersive x-ray analysis;3. To compile carbonate content data (measured in the mud size fraction) of surficial sediment samples from the Great North East Channel and central to northern Torres Strait; and4. To interpret the results derived, with respect to the source and nature of water turbidity in the Torres Strait area.Statement: During the cruises of HMAS Cook in February and March of 1988, 14 successful vibro-cores were taken in the Great North East Channel and at the mouths of the Fly River. Water samples were shaken for ~ 1 minute to ensure complete suspension and uniform distribution of particles. A 10 ml sub-sample was removed by pipette and placed in a specially designed small sample cell (manufactured by the Department of Chemical Engineering, University of Sydney). A magnetic stiring device ensured constant mixing during each measurement. Sediment samples were analysed as follows: approximately one gram of wet sample was suspended in one litre of distilled water with 10 ml of sodium-triolyphosphate dispersing agent. This mixture was sonicated for 5 minutes and placed into the standard sample cell. The cumulative volume (weight) undersize and volume (weight) frequencies were tabulated into 32 size classes (equally spaced at 0.2 phi intervals, between 125.000?m and 1.7?m, on a logarithmic plot).Statement: Vibro-core samples were analysed for grain size distribution and volume concentration using a Malvern Laser Particle Sizer (2600 series).&rft.creator=Harris, Peter, Dr &rft.creator=Baker, Elaine, Dr &rft.date=2007&rft.coverage=westlimit=142.00; southlimit=-9.0; eastlimit=144.00; northlimit=-8.0&rft.coverage=westlimit=142.00; southlimit=-9.0; eastlimit=144.00; northlimit=-8.0&rft_subject=oceans&rft_subject=TURBIDITY&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=OCEAN OPTICS&rft_subject=SEDIMENTATION&rft_subject=MARINE SEDIMENTS&rft_subject=WATER TEMPERATURE&rft_subject=OCEAN TEMPERATURE&rft_subject=SALINITY&rft_subject=SALINITY/DENSITY&rft_subject=OCEAN CURRENTS&rft_subject=OCEAN CIRCULATION&rft.type=dataset&rft.language=English Access the data
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Full description

This report gives details of laboratory analyses carried out by the Ocean Sciences Institute on behalf of the Maritime Systems Division, Defence Science and Technology Organisation. The terms of reference for the study were as follows:

1. To make grain size analyses by Malvern Laser Diffraction Particle Sizer on 6 water samples;
2. To compare and contrast the clay mineralogy of filtered water samples with core samples from the Great North East Channel and Fly River mouth using combination of X-ray diffraction and energy dispersive x-ray analysis;
3. To compile carbonate content data (measured in the mud size fraction) of surficial sediment samples from the Great North East Channel and central to northern Torres Strait; and
4. To interpret the results derived, with respect to the source and nature of water turbidity in the Torres Strait area.

Lineage

Statement: During the cruises of HMAS Cook in February and March of 1988, 14 successful vibro-cores were taken in the Great North East Channel and at the mouths of the Fly River. Water samples were shaken for ~ 1 minute to ensure complete suspension and uniform distribution of particles. A 10 ml sub-sample was removed by pipette and placed in a specially designed "small" sample cell (manufactured by the Department of Chemical Engineering, University of Sydney). A magnetic stiring device ensured constant mixing during each measurement. Sediment samples were analysed as follows: approximately one gram of wet sample was suspended in one litre of distilled water with 10 ml of sodium-triolyphosphate dispersing agent. This mixture was sonicated for 5 minutes and placed into the standard sample cell. The cumulative volume (weight) undersize and volume (weight) frequencies were tabulated into 32 size classes (equally spaced at 0.2 phi intervals, between 125.000?m and 1.7?m, on a logarithmic plot).
Statement: Vibro-core samples were analysed for grain size distribution and volume concentration using a Malvern Laser Particle Sizer (2600 series).

Notes

Credit
University of Sydney
Credit
Materials Research Laboratory, Defence Science and Technology Organisation
Purpose
The study focuses upon aspects of the available data which are relevant to understanding the nature of water turbidity in Torres Strait.

Issued: 09 07 2007

Data time period: 1988 to 1989

This dataset is part of a larger collection

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text: westlimit=142.00; southlimit=-9.0; eastlimit=144.00; northlimit=-8.0

Subjects
EARTH SCIENCE | MARINE SEDIMENTS | OCEAN CIRCULATION | Ocean Currents | OCEAN OPTICS | OCEAN TEMPERATURE | OCEANS | Salinity | SALINITY/DENSITY | Sedimentation | Turbidity | Water Temperature | oceans |

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  • global : 038b8050-2f52-11dc-a71c-00188b4c0af8