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dc.contributor.authorKirby, Jon
dc.contributor.authorFeatherstone, Will
dc.date.accessioned2017-01-30T14:41:25Z
dc.date.available2017-01-30T14:41:25Z
dc.date.created2008-11-12T23:36:15Z
dc.date.issued2001
dc.identifier.citationKirby, J. F. and Featherstone, W. E.. 2001. Anomalously Large Gradients in Version 1 of the "GEODATA 9 SECOND" Digital Elevation Model of Australia, and their Effects on Gravimetric Terrain Corrections. Cartography 30 (1): 1-10.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/40320
dc.description.abstract

Large gradients, when calculated by a first-difference method, have been detected in the 9 arc-second National Digital Elevation Model (DEM) of Australia released by the Australian Surveying and Land Information Group. Gradient values implied by the mean elevations in the DEM between adjacent grid cells of up to 74 have been observed, most notably in Australia?s more mountainous regions in the east. Comparisons with topographic maps indicate that these are anomalous gradients in the DEM that are not present in the actual topography. It is recommended that the first-difference method is used to test DEMs before they are used to compute terrain corrections.

dc.publisherMapping Sciences Institute Australia
dc.subjecttopography
dc.subjecterrors
dc.subjectdigital elevation model
dc.titleAnomalously Large Gradients in Version 1 of the "GEODATA 9 SECOND" Digital Elevation Model of Australia, and their Effects on Gravimetric Terrain Corrections
dc.typeJournal Article
dcterms.source.volume30
dcterms.source.number1
dcterms.source.monthjun
dcterms.source.startPage1
dcterms.source.endPage10
dcterms.source.titleCartography
curtin.note

A link to the journal can be fournd: http://www.mappingsciences.org.au/journal.htm

curtin.identifierEPR-2714
curtin.accessStatusOpen access
curtin.facultyDivision of Resources and Environment
curtin.facultyDepartment of Spatial Sciences


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