Authors / CoAuthors
Gallant, J. | Dowling, T. | Read, A.
Abstract
The 1 second SRTM derived DEM Version 1.0 is a 1 arc second (~30m) gridded digital elevation model (DEM). The DEM represents ground surface topography, and excludes vegetation features. The dataset was derived from the 1 second Digital Surface Model (DSM; ANZCW0703013336) by automatically removing vegetation offsets identified using several vegetation maps and directly from the DSM. This product provides substantial improvements in the quality and consistency of the data relative to the original SRTM data, but is not free from artefacts. Man-made structures such as urban areas and power line towers have not been treated. The removal of vegetation effects has produced satisfactory results over most of the continent and areas with defects are identified in the quality assessment layers distributed with the data and described in the User Guide (Geoscience Australia and CSIRO Land & Water, 2009). A full description of the methods is in progress (Read et al., in prep; Gallant et al., in prep). The grid spacing is 1 second in longitude and latitude (approximately 30 metres). Smoothed and drainage enforced versions are under development, and are expected to be released in 2010.
Product Type
dataset
eCat Id
69816
Contact for the resource
Custodian
Owner
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- DEM topographic
- ( Theme )
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- DEM
- ( Theme )
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- data
- ( Theme )
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- topography
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- AU
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Topology
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- Published_External
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- HVC_144651
Publication Date
2009-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
unknown
Topic Category
elevation
Series Information
Lineage
Unknown
Parent Information
Extents
[-44.00, -10.00, 113.00, 154.00]
Reference System
GDA94 (EPSG:4283)
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
Source data not available.