Data

Intertidal Extents Model Relative Extents Model

Geoscience Australia
Commonwealth of Australia (Geoscience Australia)
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://pid.geoscience.gov.au/dataset/ga/100482&rft.title=Intertidal Extents Model Relative Extents Model&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/100482&rft.publisher=Commonwealth of Australia (Geoscience Australia)&rft.description=The Intertidal Extents Model (ITEM v1.0) product is a national scale gridded dataset characterising the spatial extents of the exposed intertidal zone, at intervals of the observed tidal range. The current version utilises all Landsat observations (5, 7, and 8) for Australian coastal regions (excluding off-shore Territories) between 1987 and 2015 (inclusive). The Relative Extents Model (ITEM_REL_mosaic_1987_2015.tif) utilises the tidal information attributed to each tile observation to indicate the spatial extent of intertidal substratum exposed at each 10% percentile of the observed tidal range for the cell. Attributes: Single Band Integer Raster: 0 - Always water 1 - Exposed at lowest 0-10% of the observed tidal range 2 - Exposed at 10-20% of the observed tidal range 3 - Exposed at 20-30% of the observed tidal range 4 - Exposed at 30-40% of the observed tidal range 5 - Exposed at 40-50% of the observed tidal range 6 - Exposed at 50-60% of the observed tidal range 7 - Exposed at 60-70% of the observed tidal range 8 - Exposed at 70-80% of the observed tidal range 9 - Exposed at highest 80-100% of the observed tidal range (land) -999 - No DataMaintenance and Update Frequency: asNeededStatement: The Relative Extents Model (ITEM_REL_mosaic_1987_2015.tif) utilises the tidal information attributed to each tile observation to indicate the spatial extent of intertidal substratum exposed at each 10% percentile of the observed tidal range for the cell. Attributes: Single Band Integer Raster: 0 ¿ Always water 1 ¿ Exposed at lowest 0-10% of the observed tidal range 2 ¿ Exposed at 10-20% of the observed tidal range 3 ¿ Exposed at 20-30% of the observed tidal range 4 ¿ Exposed at 30-40% of the observed tidal range 5 ¿ Exposed at 40-50% of the observed tidal range 6 ¿ Exposed at 50-60% of the observed tidal range 7 ¿ Exposed at 60-70% of the observed tidal range 8 ¿ Exposed at 70-80% of the observed tidal range 9 - Exposed at highest 80-100% of the observed tidal range (land) -999 ¿ No Data&rft.creator=Commonwealth of Australia (Geoscience Australia) &rft.date=2016&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-10&rft.coverage=westlimit=112; southlimit=-44; eastlimit=154; northlimit=-10&rft_rights=&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/licenses/&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Australian Government Security ClassificationSystem&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_subject=geoscientificInformation&rft_subject=EARTH SCIENCES&rft_subject=Earth Science | Oceans&rft_subject=Earth Science | Terrestrial Hydrosphere&rft_subject=Earth Science | Oceans | Tides&rft_subject=NCI&rft_subject=Intertidal Extents Model&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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Creative Commons Attribution 4.0 International Licence
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Creative Commons Attribution 4.0 International Licence

CC-BY

4.0

http://creativecommons.org/licenses/

WWW:LINK-1.0-http--link

Australian Government Security ClassificationSystem

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WWW:LINK-1.0-http--link

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Brief description

The Intertidal Extents Model (ITEM v1.0) product is a national scale gridded dataset characterising the spatial extents of the exposed intertidal zone, at intervals of the observed tidal range. The current version utilises all Landsat observations (5, 7, and 8) for Australian coastal regions (excluding off-shore Territories) between 1987 and 2015 (inclusive). The Relative Extents Model (ITEM_REL_mosaic_1987_2015.tif) utilises the tidal information attributed to each tile observation to indicate the spatial extent of intertidal substratum exposed at each 10% percentile of the observed tidal range for the cell. Attributes: Single Band Integer Raster: 0 - Always water 1 - Exposed at lowest 0-10% of the observed tidal range 2 - Exposed at 10-20% of the observed tidal range 3 - Exposed at 20-30% of the observed tidal range 4 - Exposed at 30-40% of the observed tidal range 5 - Exposed at 40-50% of the observed tidal range 6 - Exposed at 50-60% of the observed tidal range 7 - Exposed at 60-70% of the observed tidal range 8 - Exposed at 70-80% of the observed tidal range 9 - Exposed at highest 80-100% of the observed tidal range (land) -999 - No Data

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Maintenance and Update Frequency: asNeeded
Statement: The Relative Extents Model (ITEM_REL_mosaic_1987_2015.tif) utilises the tidal information attributed to each tile observation to indicate the spatial extent of intertidal substratum exposed at each 10% percentile of the observed tidal range for the cell. Attributes: Single Band Integer Raster: 0 ¿ Always water 1 ¿ Exposed at lowest 0-10% of the observed tidal range 2 ¿ Exposed at 10-20% of the observed tidal range 3 ¿ Exposed at 20-30% of the observed tidal range 4 ¿ Exposed at 30-40% of the observed tidal range 5 ¿ Exposed at 40-50% of the observed tidal range 6 ¿ Exposed at 50-60% of the observed tidal range 7 ¿ Exposed at 60-70% of the observed tidal range 8 ¿ Exposed at 70-80% of the observed tidal range 9 - Exposed at highest 80-100% of the observed tidal range (land) -999 ¿ No Data

Notes

Purpose
The purpose of the ITEM v1.0 product is to assist in understanding the extent and elevation profile of the Australian intertidal zone. Examples of where this knowledge can contribute include environmental monitoring applications for migratory bird species, habitat mapping in coastal regions, hydrodynamic modelling, and geomorphology studies of features in the intertidal zone. Through attribution of the LOT and HOT values modelled for each cell, the extents model can be used to derive an elevation profile of the observed intertidal zone extent on a cell by cell basis. The method employed can be tailored based on user requirements. For example, by dividing the observed tidal range for a cell (HOT-LOT) into 10% interval values, contours can be assigned to the section of the Intertidal Extents Model contained in that cell. These can then be used as a standalone elevation data source, or interpolated to create a continuous intertidal digital elevation model for the cell. The ability to create an elevation model relative to MSL enables the data to be integrated as a complimentary data source, linking shallow water bathymetry and terrestrial elevation models.

Created: 02 06 2016

Issued: 14 06 2016

Data time period: 2008 to 30 11 2015

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154,-10 154,-44 112,-44 112,-10 154,-10

133,-27

text: westlimit=112; southlimit=-44; eastlimit=154; northlimit=-10

Subjects
EARTH SCIENCES | Earth Science | Oceans | Earth Science | Oceans | Tides | Earth Science | Terrestrial Hydrosphere | Intertidal Extents Model | NCI | Published_External | geoscientificInformation |

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Other Information
Download the data (tif)

uri : https://d28rz98at9flks.cloudfront.net/100482/100482_RelativeExtentsLayer.zip

Intertidal Extents Model Collection

uri : https://pid.geoscience.gov.au/dataset/ga/100600

Intertidal Extents Model Confidence Layer

uri : https://pid.geoscience.gov.au/dataset/ga/100464

Intertidal Extents Model Coastal Cells shapefile

uri : https://pid.geoscience.gov.au/dataset/ga/100481

Product Description (pdf)

uri : http://d28rz98at9flks.cloudfront.net/100482/Product_Description_Intertidal_Extents_Model.pdf

Identifiers