Intertidal Extents Model Coastal Cells shapefile

<p>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).


<p>The Intertidal Extents Model (ITEM v1.0) consists of three datasets derived from the Landsat NBAR data managed in the Australian Geoscience Data Cube (AGDC) for the period 1987 to 2015.


<p>The Coastal Cells shapefile (ITEM_CoastalCells.shp) identifies the location and extents of the 221 one degree by one degree AGDC cells used in the product, covering the mainland and Tasmanian coastline of the continent (Figure 1). The shapefile also includes information on the lowest (LOT) and highest (HOT) observed tides for the cell, and hence the observed tidal range (HOT-LOT), based on tidal modelling for the time of acquisition of each of the corresponding Landsat tile observations in the cell.


<p>Attributes:


<p>AGDC Cell Identifier


<p>Lowest Observed Tide (LOT) - The lowest modelled tidal offset based on the acquisition times of all observations in the cell. Relative to Mean Sea Level (MSL) (m) x 1000.


<p>Highest Observed Tide (HOT) - The highest modelled tidal offset based on the acquisition times of all observations in the cell. Relative to Mean Sea Level (MSL) (m) x 1000.

Simple

Identification info

Date (Creation)
2016-06-02T14:00:00
Date (Publication)
2016-06-14T16:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/100481

Citation identifier
Digital Object Identifier/http://dx.doi.org/10.4225/25/575F64E5BA264

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Commonwealth of Australia (Geoscience Australia)

 Voice
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.

Status
Point of contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice Voice
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice Voice
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice Voice
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice Voice
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice Voice
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice Voice
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice Voice
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice Voice
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice Voice
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice Voice
Spatial representation type
Vector

Spatial resolution

Level of detail

25m

Topic category
  • Geoscientific information

Extent

Temporal extent

Time period
2008-01-01T00:00:00 2015-11-30T23:55:00

Extent

N
S
E
W


Maintenance and update frequency
As needed

Resource format

Title

Product data repository: Various Formats

Protocol

FILE:DATA-DIRECTORY

Name of the resource

Data Store directory containing the digital product files

Description

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

theme.ANZRC Fields of Research.rdf

  • EARTH SCIENCES

GCMD Keywords

  • Earth Science | Oceans | Tides

  • Earth Science | Oceans

  • Earth Science | Terrestrial Hydrosphere

Data centre

  • NCI

Product

  • Intertidal Extents Model

Keywords

  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

Edition

4.0

Website

http://creativecommons.org/licenses/

Access constraints
License
Use constraints
License

Resource constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified
Language
English
Character encoding
UTF8

Distribution Information

Distributor contact
Role Organisation / Individual Name Details
Distributor

Commonwealth of Australia (Geoscience Australia)

 Voice
OnLine resource

Download the data (shp)

Download the data (shp)

OnLine resource

Intertidal Extents Model Collection

Intertidal Extents Model Collection

OnLine resource

Intertidal Extents Model Confidence Layer

Intertidal Extents Model Confidence Layer

OnLine resource

Intertidal Extents Model Relative Extents Model

Intertidal Extents Model Relative Extents Model

OnLine resource

Product Description (pdf)

Product Description (pdf)

Resource lineage

Statement

The Coastal Cells shapefile (ITEM_CoastalCells.shp) identifies the location and extents of the 221 one degree by one degree AGDC cells used in the product, covering the mainland and Tasmanian coastline of the continent.

Hierarchy level
Dataset
Description

Australian Data Cube ARG25 Surface Reflactance and Pixel Quality Assessment, in conjunction with the OTPS TPX08 Atlas Tidal Model and Normalised Difference Water index (NDWI).

Equivalent scale

Denominator
50
Hierarchy level
Dataset

Extent

N
S
E
W


Metadata constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/0457dc12-13c2-40be-9d30-1951ce48e105

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Kool, J.

Commonwealth of Australia (Geoscience Australia)

 Voice

Type of resource

Resource scope
Dataset
Name

Dataset - Intertidal areas

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/100481

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/0457dc12-13c2-40be-9d30-1951ce48e105

Date info (Creation)
2025-04-17T01:30:47.701Z
Date info (Creation)
2016-06-02T13:38:27
Date info (Revision)
2025-04-17T01:30:47.701Z

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
S
E
W


Keywords

Intertidal Extents Model NCI
GCMD Keywords
Earth Science | Oceans Earth Science | Oceans | Tides Earth Science | Terrestrial Hydrosphere
theme.ANZRC Fields of Research.rdf
EARTH SCIENCES

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Associated resources

Not available