Data

Seabed exposure grid of Carnarvon Shelf

Australian Ocean Data Network
CSIRO O&A, Information & Data Centre (Point of contact) CSIRO Oceans & Atmosphere - Hobart (Associated with) Geoscience Australia (Associated with) Geoscience Australia Marine Data Manager, (Point of contact)
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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://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/bc1b3741-e760-5039-e044-00144f7bc0f4&rft.title=Seabed exposure grid of Carnarvon Shelf&rft.identifier=Marlin Record Number: 8914&rft.publisher=Australian Ocean Data Network&rft.description=The ArcINFO grid is one of the outputs of a finescale hydrodynamic model, the Simulating WAves Nearshore (SWAN) model (Booij et al., 1999; Ris et al., 1999).The grid describes the modelled maximum orbital velocity (m/s) which can be used as estimation of seabed exposure on the Carnarvon Shelf. This dataset is a contribution to the CERF Marine Biodiversity Hub.Progress Code: completedMaintenance and Update Frequency: notPlannedStatement: A finescale hydrodynamic model, the Simulating WAves Nearshore (SWAN) model (Booij et al., 1999; Ris et al., 1999), was developed to estimate seabed disturbance for Carnarvon Shelf. The SWAN model estimates wave propagation using the wave action equation (Hasselmann et al., 1973). The model takes into account refraction of swell waves, plus shoaling, diffraction, dissipation and random waves, but excludes local wave generation by wind. The bathymetry data for the SWAN model was input at 100metre spatial resolution. The model also required three parameters: significant wave height (2 to 4 metres), peak wave period (6 to 14 seconds), and peak wave direction (p, 220 degree). The model generated five variables (in a plain text file) for each scenario: significant wave height, wave direction, orbital velocity, orbital diameter and maximum orbital velocity. The maximum orbital velocity (unit: m/s) was considered as the best estimate of seabed exposure. The values of maximum orbital velocity were then combined to generate one seabed exposure variable: averaging all 12 scenarios (cs_all_av). This seabed exposure variable was then transformed intoArcINFO grids.&rft.creator=Anonymous&rft.date=2010&rft_rights=&rft_rights=This material is released under the Creative Commons Attribution 3.0 Australia Licence.&rft_subject=oceans&rft_subject=Commonwealth Environment Research Facilities&rft.type=dataset&rft.language=English Access the data
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This material is released under the Creative Commons Attribution 3.0 Australia Licence.

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The ArcINFO grid is one of the outputs of a finescale hydrodynamic model, the Simulating WAves Nearshore (SWAN) model (Booij et al., 1999; Ris et al., 1999).The grid describes the modelled maximum orbital velocity (m/s) which can be used as estimation of seabed exposure on the Carnarvon Shelf. This dataset is a contribution to the CERF Marine Biodiversity Hub.

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Progress Code: completed
Maintenance and Update Frequency: notPlanned
Statement: A finescale hydrodynamic model, the Simulating WAves Nearshore (SWAN) model (Booij et al., 1999; Ris et al., 1999), was developed to estimate seabed disturbance for Carnarvon Shelf. The SWAN model estimates wave propagation using the wave action equation (Hasselmann et al., 1973). The model takes into account refraction of swell waves, plus shoaling, diffraction, dissipation and random waves, but excludes local wave generation by wind. The bathymetry data for the SWAN model was input at 100metre spatial resolution. The model also required three parameters: significant wave height (2 to 4 metres), peak wave period (6 to 14 seconds), and peak wave direction (p, 220 degree). The model generated five variables (in a plain text file) for each scenario: significant wave height, wave direction, orbital velocity, orbital diameter and maximum orbital velocity. The maximum orbital velocity (unit: m/s) was considered as the best estimate of seabed exposure. The values of maximum orbital velocity were then combined to generate one seabed exposure variable: averaging all 12 scenarios (cs_all_av). This seabed exposure variable was then transformed intoArcINFO grids.

Notes

Credit
UniQuest at the University of Queensland (http://www.uniquest.com.au)
Credit
Dr Michale Hughes

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Download dataset (.zip 1.8 MB) (Data Link)

url : https://www.marine.csiro.au/data/trawler/download.cfm?file_id=2239

Identifiers
  • Local : Marlin Record Number: 8914
  • global : bc1b3741-e760-5039-e044-00144f7bc0f4