Authors / CoAuthors
Unknown
Abstract
The 3 second (~90m) Shuttle Radar Topography Mission (SRTM) derived Digital Surface Model (DSM) Version 1.0 was derived from resampling the 1 arc second (~30m) gridded DSM (ANZCW0703013336) that represents ground surface topography as well as features above the ground such as vegetation and man-made structures. The 1 second DSM was derived from the SRTM data acquired in February 2000, supported by the GEODATA 9 second DEM in void areas and the SRTM Water Body Data. Stripes and voids have been removed from the 1 second SRTM data to provide an enhanced and complete DSM for Australia and near-shore islands. A full description of the methods is in progress (Read et al., in prep). The 3 second DEM was produced for use by government and the public under Creative Commons attribution. Further information can be found in the User Guide. The 1 second DSM forms the source for the 1 second DEM with vegetation offsets removed (ANZCW0703013355) and the smoothed version (ANZCW0703014016). All 1 second products resampled to 3 seconds are available (DSM; ANZCW0703014216, DEM; ANZCW0703014182, DEM-S; ANZCW0703014217). These datasets are available freely, with the user being required to agree to the disclaimer at the time of order before the order can be processed. Creative Commons Attribution Australia Licence means data can be shared (copied, distributed, transmitted) or adapted provided you acknowledge the author or licensee. Consult the Creative Commons website for more information. http://creativecommons.org.au
Product Type
dataset
eCat Id
77230
Contact for the resource
Custodian
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- GIS Dataset
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2013-08-21T00:00:00
Creation Date
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Status
Purpose
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
Please refer to the User Guide (Geoscience Australia & CSIRO, 2010) for full lineage description. DSM Ancillary data layers Four additional data layers were used to make alterations to the raw SRTM data to produce the 1 second DSM: - A destripe mask indicating which ¼ x ¼ degree tiles have been affected by destriping and which have not been destriped - A striping magnitude layer showing the amplitude of the striping at 0.01 degree (~ 1km) resolution - A water mask at 1 second resolution showing the cells that are part of the flattened water bodies - A void mask showing cells that were no-data in the raw SRTM and have been filled using the void filling algorithm Resampling to 3 seconds The 1 second SRTM derived Digital Surface Model (DSM) was resampled to 3 seconds of arc (90m) in ArcGIS software using aggregation tool. The 3 second SRTM was converted to integer format for the national mosaic to make the file size more manageable. It does not affect the accuracy of the data at this resolution.
Parent Information
Extents
[-44.0, -10.0, 113.0, 154.0]
Reference System
Spatial Resolution
Service Information
Associations
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Source Information
Source data not available.