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Plan Curvature derived from 1" SRTM DEM-S

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About this Collection

Plan Curvature derived from 1" SRTM DEM-S


Plan (or contour) curvature is the rate of change of aspect (orthogonal to the slope) and represents topographic convergence or divergence. It is significant for water movement across the landscape, i.e., the accumulation or dispersion of water. The plan curvature products were derived from the Smoothed Digital Elevation Model (DEM-S; ANZCW0703014... more


Environmental Management Land Capability and Soil Degradation Landscape Ecology Natural Resource Management Soil Sciences not elsewhere classified


https://doi.org/10.4225/08/56DE806D91E44


11 Feb 2000


22 Feb 2000


CSIRO Enquiries
CSIROEnquiries@csiro.au
1300 363 400

Plan Curvature LAND Topography Models ECOLOGY Landscape TERN_Soils Land Surface Australia


Source data 1. 1 arc-second SRTM-derived Smoothed Digital Elevation Model (DEM-S; ANZCW0703014016). 2. 1 arc-second plan curvature product 3. 3 arc-second resolution SRTM water body and ocean mask datasets Plan Curvature calculation Plan curvature was calculated from DEM-S using the finite difference method (Gallant and Wilson, 2000). The different spacing in the E-W and N-S directions due to the geographic projection of the data was accounted for by using the actual spacing in metres of the grid points calculated from the latitude. The plan curvature calculation was performed on 1° x 1° tiles, with overlaps to ensure correct values at tile edges. The 3 arc-second resolution version was generated from the 1 arc-second plan curvature product. This was done by aggregating the 1” data over a 3 x 3 grid cell window and taking the mean of the nine values that contributed to each 3” output grid cell. The 3” plan curvature data were then masked using the SRTM 3” ocean and water body datasets. References Gallant, J.C. and Wilson, J.P. (2000) Primary topographic attributes, chapter 3 in Wilson, J.P. and Gallant, J.C. Terrain Analysis: Principles and Applications, John Wiley and Sons, New York.


Access to this data has been made possible by the Terrestrial Ecosystem Research Network (TERN), supported by the Australian Government through the National Collaborative Research Infrastructure Strategy and the Super Science Initiative.


Creative Commons Attribution 4.0 International Licence


CSIRO (Australia)


Gallant, John; Austin, Jenet (2012): Plan Curvature derived from 1" SRTM DEM-S. v2. CSIRO. Data Collection. https://doi.org/10.4225/08/56DE806D91E44


All Rights (including copyright) CSIRO 2012.


The metadata and files (if any) are available to the public.

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Location Details

10°0′0″ S


44°0′0″ S


154°0′0″ E


113°0′0″ E


WGS84


More about this Collection

John Gallant


Terrain Analysis Research Team Leader


0 m


0 m



Raster




eng


UTF8


Elevation


About this Project

1181.2 TERN Facility No9 InfoGrid GRUNDY


The Soil and Landscape Grid of Australia is a comprehensive fine spatial resolution grid of functional soil attributes and key landscape features across Australia. The landscape attributes are derived from the data collected by the Shuttle Radar Topography Mission, whilst the soil attribute surfaces are modelled from existing soils information. The... more


John Gallant


National Elevation and Terrain Datasets


SRTM-derived elevation and terrain covariate datasets at 1 second or 3 second resolution


Measurement


John Gallant


Jenet Austin


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