Product catalogue
DEPRECATED - National Intertidal Digital Elevation Model 25m 1.0.0
<b>This record has been superseded by eCat 149403</b>
The National Intertidal Digital Elevation Model (NIDEM) product is a continental-scale elevation dataset for Australia's exposed intertidal zone. NIDEM provides the first three-dimensional representation of Australia's intertidal zone (excluding off-shore Territories and intertidal mangroves) at 25 m spatial resolution, addressing a key gap between the availability of sub-tidal bathymetry and terrestrial elevation data. NIDEM was generated by combining global tidal modelling with a 30-year time series archive of spatially and spectrally calibrated Landsat satellite data managed within the Digital Earth Australia (DEA) platform. NIDEM complements existing intertidal extent products, and provides data to support a new suite of use cases that require a more detailed understanding of the three-dimensional topography of the intertidal zone, such as hydrodynamic modelling, coastal risk management and ecological habitat mapping.
Simple
Identification info
- Date (Creation)
- 2018-10-03T01:40:51
- Date (Publication)
- 2018-11-26T04:35:26
- Date (Deprecated)
- 2024-04-22
- Edition
-
1.0.0
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/123678
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.26186/5c4fc06a79f76
- Cited responsible party
-
Role Organisation / Individual Name Details Owner Commonwealth of Australia (Geoscience Australia)
Voice Author Bishop-Taylor, R.
Author Sagar, S.
Author Lymburner, L.
- Status
- Deprecated
- Point of contact
-
Role Organisation / Individual Name Details Custodian Commonwealth of Australia (Geoscience Australia)
Voice Owner Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Geoscience Australia - Team Leader, Applications and Systems Support, NEMO
Voice Point of contact Geoscience Australia - Section Leader, Operations Section, NEMO
Voice Point of contact Geoscience Australia - Team Leader, Applications and Systems Support, NEMO
Voice Point of contact Geoscience Australia - Team Leader, Applications and Systems Support, NEMO
Voice Point of contact Geoscience Australia - GA Media Hotline
Voice Point of contact Geoscience Australia - Team Leader, Product Management, Operations Section NEMO
Voice Point of contact Geoscience Australia - Team Leader, Business Systems Development Section, NEMO
Voice
- Topic category
-
- Geoscientific information
Extent
))
Temporal extent
- Time period
- 1987-01-01 2016-12-31
- Maintenance and update frequency
- As needed
Resource format
- Title
-
Product data repository: Various Formats
- Website
-
Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- Instrument
-
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Landsat
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- Theme
-
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Bathymetry
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- Theme
-
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Intertidal zone
-
- Theme
-
-
Elevation
-
- Product
-
-
DEM
-
- Product
-
-
Published_External
-
Resource constraints
- Title
-
Creative Commons Attribution 4.0 International Licence
- Alternate title
-
CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Associated resource
- Association Type
- Informed
- Title
-
Digital Earth Australia Intertidal
- Citation identifier
- 149403
- Citation identifier
- 69a68cdd-ed88-4f00-bd1b-45316cedc10b
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
-
Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
-
Superseded by eCat 149403
Superseded by eCat 149403
- Distribution format
-
Resource lineage
- Statement
-
NIDEM is based on a 30 year time series archive of spatially and spectrally calibrated Landsat observations (between 1986 and 2016 inclusive) managed within the Digital Earth Australia (DEA) platform. NIDEM builds upon the improved tidal modelling framework of the Intertidal Extents Model v2.0 (ITEM 2.0; Sagar et al. 2017, 2018), enabling each satellite observation in the 30 year time series to be accurately associated with modelled tide heights from the global TPX08 ocean tidal model. These modelled tide heights and a spatially consistent and automated waterline extraction and triangulated irregular network (TIN) interpolation procedure were then used to derive elevations relative to modelled mean sea level for each 25 x 25 m Landsat pixel. This resulted in elevation data for approximately 15,387 sq. km of intertidal terrain across the entire Australian coastline.
- Hierarchy level
- Dataset
- Description
-
Please refer to the lineage section.
Reference System Information
- Reference system identifier
- EPSG/GDA94 / Australian Albers (EPSG:3577)
Metadata constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/a31425c7-cc26-432d-a362-f5c3bfd4533e
- Title
-
GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation / Individual Name Details Point of contact Geoscience Australia - Client Services
Voice
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/123678
- Date info (Revision)
- 2018-10-12T09:33:56
- Date info (Creation)
- 2018-10-12T09:33:56
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