Data

Mass of Reef Top Sediments in the Wistari Platform

Australian Ocean Data Network
Ryan, David ; Opdyke, Bradley, Dr
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://catalogue.aodn.org.au:443/geonetwork/srv/api/records/e6caeea0-0dab-11dc-b244-00188b4c0af8&rft.title=Mass of Reef Top Sediments in the Wistari Platform&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/e6caeea0-0dab-11dc-b244-00188b4c0af8&rft.description=Wistari Reef is a lagoonal platform reef, situated on the Tropic of Capricorn, within the Capricorn and Bunker region of the southern Great Barrier Reef. The results indicate that between 14.5 and 16m of CaCO3 sediment has accumulated on the reef top, which totals 5.3 x 108 tonnes.This is broken down into the detrital and frame zones, providing their respective sub-totals. The detrital zone comprises the lagoon and sanded reef flats, while the 'frame zone' comprises the reef edge and the reef flats.Statement: The thickness data is a best estimate derived from comparisons with seismic data from Heron Reef, and also extrapolation of the seismic profiles used throughout the study. The planar nature of the Pleistocene surface has been taken into account, as has the average elevation difference (1.5m) of the detrital (lagoonal) proportion of the reef compared to the framework area. Average porosity and sediment density values have been estimated after the method of Kinsey & Hopley (1991), reflecting the water content (pore space) and density of the mixture of aragonite and calcitic sediments.Statement: The dataset presents information regarding the area, thickness, volume, porosity, density and mass of the detrital zone and the framework zone. These subtotals are used to calculate the total area and total mass of CaCO3 in the reef top. Parameters: Zone, area (m2), thickness (m), volume (m3), porosity (%), density (g/cm3), total mass of calcium carbonate (t).&rft.creator=Ryan, David &rft.creator=Opdyke, Bradley, Dr &rft.date=2007&rft.coverage=151.83658,-23.48230 151.85986,-23.49551 151.89561,-23.48884 151.92237,-23.48260 151.92202,-23.46441 151.90218,-23.44759 151.83819,-23.46779 151.83658,-23.48230&rft.coverage=westlimit=151.5; southlimit=-24.5; eastlimit=153; northlimit=-23&rft.coverage=westlimit=151.5; southlimit=-24.5; eastlimit=153; northlimit=-23&rft_rights=Creative Commons Attribution 2.5 Australia License http://creativecommons.org/licenses/by/2.5/au/&rft_rights=The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).&rft_subject=geoscientificInformation&rft_subject=CORAL REEFS&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=COASTAL PROCESSES&rft_subject=area&rft_subject=thickness&rft_subject=volume&rft_subject=porosity&rft_subject=density&rft_subject=mass_of_calcium_carbonate&rft.type=dataset&rft.language=English Access the data
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The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).

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Brief description

Wistari Reef is a lagoonal platform reef, situated on the Tropic of Capricorn, within the Capricorn and Bunker region of the southern Great Barrier Reef. The results indicate that between 14.5 and 16m of CaCO3 sediment has accumulated on the reef top, which totals 5.3 x 108 tonnes.This is broken down into the detrital and frame zones, providing their respective sub-totals. The detrital zone comprises the lagoon and sanded reef flats, while the 'frame zone' comprises the reef edge and the reef flats.

Lineage

Statement: The thickness data is a best estimate derived from comparisons with seismic data from Heron Reef, and also extrapolation of the seismic profiles used throughout the study. The planar nature of the Pleistocene surface has been taken into account, as has the average elevation difference (1.5m) of the detrital (lagoonal) proportion of the reef compared to the framework area. Average porosity and sediment density values have been estimated after the method of Kinsey & Hopley (1991), reflecting the water content (pore space) and density of the mixture of aragonite and calcitic sediments.
Statement: The dataset presents information regarding the area, thickness, volume, porosity, density and mass of the detrital zone and the framework zone. These subtotals are used to calculate the total area and total mass of CaCO3 in the reef top. Parameters: Zone, area (m2), thickness (m), volume (m3), porosity (%), density (g/cm3), total mass of calcium carbonate (t).

Notes

Credit
Funded by The Australian Research Council (ARC)
Credit
The Australian National University (ANU)
Purpose
It is important to determine reef top mass, so this can be compared with the mass of off-reef sediments. Sediment construction, transport, deposition, and destruction processes can then be investigated.

Issued: 29 05 2007

Data time period: 1998 to 1998

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151.83658,-23.4823 151.85986,-23.49551 151.89561,-23.48884 151.92237,-23.4826 151.92202,-23.46441 151.90218,-23.44759 151.83819,-23.46779 151.83658,-23.4823

151.879475,-23.47155

153,-23 153,-24.5 151.5,-24.5 151.5,-23 153,-23

152.25,-23.75

text: westlimit=151.5; southlimit=-24.5; eastlimit=153; northlimit=-23

Subjects
COASTAL PROCESSES | Coral Reefs | EARTH SCIENCE | OCEANS | area | density | geoscientificInformation | mass_of_calcium_carbonate | porosity | thickness | volume |

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Other Information
(ANU_Ryan_MassRT_data.xls)

uri : https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/e6caeea0-0dab-11dc-b244-00188b4c0af8/attachments/ANU_Ryan_MassRT_data.xls

Identifiers
  • global : e6caeea0-0dab-11dc-b244-00188b4c0af8
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