Data

Mass of Off-Reef Sediments on Wistari Reef

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/d3085ac0-0e68-11dc-8c12-00188b4c0af8&rft.title=Mass of Off-Reef Sediments on Wistari Reef&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/d3085ac0-0e68-11dc-8c12-00188b4c0af8&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 the volume of off-reef sediment is ~ 4.064exp8 with a mass of 5.872exp8 tonnes. These values are estimated based on seismic profiles associated with the study.Statement: The volume of sediment is estimated using seismic profiles in the study. A wedge shape prism is considered the best approximation of the sediment mass. An off-shore distance of 3000m is considered, corresponding to the maximum extent of seismic profiles. A length of 8600 m, corresponding to the approximate length of the northern leeward margin off the reef rim is also used. A sediment depth of 23.5 is approximated at the leeward reef edge, while a sediment depth of 8 m is used at the 3000 m mark out from the reef rim. The sediment porosity and density values have been estimated after the method of Kinsey & Hopley (1991), reflecting water content (pore space) and density of the mixture of aragonitic and calcitic sediments.Statement: Given the number of assumptions associated with this estimate, the total volume and mass of sediment should only be considered an approximation. Parameters: Volume (m3), density (g/cm3), porosity (%), mass (t).&rft.creator=Ryan, David &rft.creator=Opdyke, Bradley, Dr &rft.date=2007&rft.coverage=151.85146,-23.48818 151.83823,-23.47360 151.90206,-23.44934 151.88839,-23.44209 151.82670,-23.46293 151.83805,-23.49086 151.85146,-23.48818&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=volume&rft_subject=density&rft_subject=porosity&rft_subject=mass&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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Full 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 the volume of off-reef sediment is ~ 4.064exp8 with a mass of 5.872exp8 tonnes. These values are estimated based on seismic profiles associated with the study.

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Statement: The volume of sediment is estimated using seismic profiles in the study. A wedge shape prism is considered the best approximation of the sediment mass. An off-shore distance of 3000m is considered, corresponding to the maximum extent of seismic profiles. A length of 8600 m, corresponding to the approximate length of the northern leeward margin off the reef rim is also used. A sediment depth of 23.5 is approximated at the leeward reef edge, while a sediment depth of 8 m is used at the 3000 m mark out from the reef rim. The sediment porosity and density values have been estimated after the method of Kinsey & Hopley (1991), reflecting water content (pore space) and density of the mixture of aragonitic and calcitic sediments.
Statement: Given the number of assumptions associated with this estimate, the total volume and mass of sediment should only be considered an approximation. Parameters: Volume (m3), density (g/cm3), porosity (%), mass (t).

Notes

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

Issued: 30 05 2007

Data time period: 1998 to 1998

This dataset is part of a larger collection

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151.85146,-23.48818 151.83823,-23.4736 151.90206,-23.44934 151.88839,-23.44209 151.8267,-23.46293 151.83805,-23.49086 151.85146,-23.48818

151.86438,-23.466475

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 | density | geoscientificInformation | mass | porosity | volume |

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Other Information
(ANU_Ryan_MassOR_data.xls)

url : https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/d3085ac0-0e68-11dc-8c12-00188b4c0af8/attachments/ANU_Ryan_MassOR_data.xls

Sediment data - Wistari Reef (aodn:sediment_data_wistari_reef)

url : http://geoserver-123.aodn.org.au/geoserver/wms

Identifiers
  • global : d3085ac0-0e68-11dc-8c12-00188b4c0af8