Data

Fetch-based exposure indices for temperate Australia

Australian Ocean Data Network
Hill, Nicole, Dr ; Barrett, Neville, Dr ; Pepper, Austen ; Hulls, Justin
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=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=bc9916f6-e452-4039-9f17-fecea5376cbb&rft.title=Fetch-based exposure indices for temperate Australia&rft.identifier=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=bc9916f6-e452-4039-9f17-fecea5376cbb&rft.description=These data describe quantitative exposure indices generated using cartographic fetch methods on a 0.01 degree grid across temperate Australia (South Australia, Victoria and Tasmania). Two indices are reported: openness and bathymetry-altered fetch. Openness is a measure of the distance of a site to the nearest coastline in all directions and describes potential exposure to locally generated seas and undefined swell. Bathymetry-altered fetch attempts to account for the attenuation of wave energy as waves move into shallow waters and encounter friction with the seafloor.Fetch-based exposure indices were generated using the Generic Relative Wave Exposure Model (GREMO) implemented within the ArcMap program in ArcGIS 9.3. A The GEODATA Coast 100K 2004 Australian Coastline (Geoscience Australia) and the Australian Bathymetry and Topography Grid (Whiteway 2009) that was supplemented with nearshore data collected by the SEA.MAP Tasmania project were used as input layers. A 0.01 degree grid was generated from the coast to the 30m depth contour and exposure indices were calculated for each grid point. Further details on the creation of this resource can be found in the following references: 1) Pepper, A., 2009. Extension, generalisation, and verification of a GIS-based relative wave exposure model. School of Earth and Environmental Sciences. University of Wollongong, Wollongong, p. 197. 2) Hill, N.A., Pepper, A.R., Puotinen, M.L., Hughes, M.G., Edgar, G.J., Barrett, N.S., Stuart-Smith, R.D., Leaper, R., 2010. Quantifying wave exposure in shallow temperate reef systems: Applicability of fetch models for predicting algal biodiversity. Mar. Ecol. Prog. Ser. 417, 83-95.&rft.creator=Hill, Nicole, Dr &rft.creator=Barrett, Neville, Dr &rft.creator=Pepper, Austen &rft.creator=Hulls, Justin &rft.date=2013&rft.coverage=northlimit=-31.47; southlimit=-43.79; westlimit=129.00; eastLimit=148.56&rft.coverage=northlimit=-31.47; southlimit=-43.79; westlimit=129.00; eastLimit=148.56&rft_rights=Creative Commons Attribution 2.5 Australia License http://creativecommons.org/licenses/by/2.5&rft_subject=oceans&rft_subject=environment&rft_subject=AUSTRALIA EXCLUDING EXTERNAL TERRITORIES&rft_subject=SOUTH AUSTRALIA&rft_subject=VICTORIA&rft_subject=TASMANIA&rft_subject=ROCKY COASTS&rft_subject=BATHYMETRY/SEAFLOOR TOPOGRAPHY&rft_subject=OCEAN WAVES&rft_subject=WAVE FETCH&rft_subject=Temperate Reef&rft_subject=Environmental Impact Assessment&rft_subject=ENVIRONMENTAL SCIENCES&rft_subject=ENVIRONMENTAL SCIENCE AND MANAGEMENT&rft_subject=Conservation and Biodiversity&rft_subject=Marine and Estuarine Ecology (incl. Marine Ichthyology)&rft_subject=BIOLOGICAL SCIENCES&rft_subject=ECOLOGY&rft.type=dataset&rft.language=English Access the data

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Creative Commons Attribution 2.5 Australia License
http://creativecommons.org/licenses/by/2.5

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Brief description

These data describe quantitative exposure indices generated using cartographic fetch methods on a 0.01 degree grid across temperate Australia (South Australia, Victoria and Tasmania).

Two indices are reported: openness and bathymetry-altered fetch. Openness is a measure of the distance of a site to the nearest coastline in all directions and describes potential exposure to locally generated seas and undefined swell. Bathymetry-altered fetch attempts to account for the attenuation of wave energy as waves move into shallow waters and encounter friction with the seafloor.

Lineage

Fetch-based exposure indices were generated using the Generic Relative Wave Exposure Model (GREMO) implemented within the ArcMap program in ArcGIS 9.3. A The GEODATA Coast 100K 2004 Australian Coastline (Geoscience Australia) and the Australian Bathymetry and Topography Grid (Whiteway 2009) that was supplemented with nearshore data collected by the SEA.MAP Tasmania project were used as input layers. A 0.01 degree grid was generated from the coast to the 30m depth contour and exposure indices were calculated for each grid point.
Further details on the creation of this resource can be found in the following references:
1) Pepper, A., 2009. Extension, generalisation, and verification of a GIS-based relative wave exposure model. School of Earth and Environmental Sciences. University of Wollongong, Wollongong, p. 197.
2) Hill, N.A., Pepper, A.R., Puotinen, M.L., Hughes, M.G., Edgar, G.J., Barrett, N.S., Stuart-Smith, R.D., Leaper, R., 2010. Quantifying wave exposure in shallow temperate reef systems: Applicability of fetch models for predicting algal biodiversity. Mar. Ecol. Prog. Ser. 417, 83-95.

Notes

Credit
Any users of CERF Marine Biodiversity Hub data are required to clearly acknowledge the source of the material in the format: "Data was sourced from the CERF Marine Biodiversity Hub – the Marine Biodiversity Hub is supported through funding from the Australian Government’s National Environmental Research Program (NERP), administered by the Department of Sustainability, Environment, Water, Population and Communities (DSEWPaC)." Also credit other authors and organisations involved in collection of this particular datastream (as listed in ‘cited responsible party’ in the metadata record).
Purpose
These indices were derived in there recognition that quantitative exposure indices for broad spatial scales in shallow waters (<30m) across temperate Australia were lacking. Quantitative measures were generated to facilitate work being conducted within the CERF Marine Biodiversity Hub.

Created: 2013

Issued: 15 03 2011

This dataset is part of a larger collection

148.56,-31.47 148.56,-43.79 129,-43.79 129,-31.47 148.56,-31.47

138.78,-37.63

Other Information
(SUPPLEMENTARY INFO - ReadMe relating to data creation and shapefiles [direct download])

uri : https://data.imas.utas.edu.au/attachments/bc9916f6-e452-4039-9f17-fecea5376cbb/ReadMe_Exposure_Shapefiles.xlsx

(ASSOCIATED PUBLICATION - Quantifying wave exposure in shallow temperate reef systems: Applicability of fetch models for predicting algal biodiversity (DOI: 10.3354/meps08815))

doi : http://dx.doi.org/10.3354/meps08815

Identifiers
  • global : bc9916f6-e452-4039-9f17-fecea5376cbb