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dc.contributor.authorFeatherstone, Will
dc.contributor.authorKuhn, Michael
dc.date.accessioned2017-01-30T12:01:48Z
dc.date.available2017-01-30T12:01:48Z
dc.date.created2010-03-29T20:04:33Z
dc.date.issued2006
dc.identifier.citationFeatherstone, Will and Kuhn, Michael. 2006. Height Systems and Vertical Datums: a Review in the Australian Context. Journal of Spatial Science. 51 (1): pp. 21-41.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/17429
dc.identifier.doi10.1080/14498596.2006.9635062
dc.description.abstract

This paper reviews (without equations) the various definitions of height systems and vertical geodetic datum surfaces, together with their practical realisation for users in Australia. Excluding geopotential numbers, a height system is a one-dimensional coordinate system used to express the metric distance (height) of a point from some reference surface. Its definition varies according to the reference surface chosen and the path along which the height is measured. A vertical geodetic datum is the practical realisation of a height system and its reference surface for users, nominally tied to mean sea level. In Australia, the normal-orthometric height system is used, which is embedded in the Australian Height Datum (AHD). The AHD was realised by the adjustment of ~195,000 km of spirit-levelling observations fixed to limited-term observations of mean sea level at multiple tide-gauges. The paper ends by giving some explanation of the problems with the AHD and of the differences between the AHD and the national geoid model, pointing out that it is preferable to recompute the AHD.

dc.publisherSpatial Sciences Institute, Australia
dc.subjectAHD
dc.subjectsea level
dc.subjectHeight systems
dc.subjectvertical datums
dc.subjectgeoid
dc.subjectgravity
dc.titleHeight Systems and Vertical Datums: a Review in the Australian Context
dc.typeJournal Article
dcterms.source.volume51
dcterms.source.number1
dcterms.source.startPage21
dcterms.source.endPage41
dcterms.source.issn14498596
dcterms.source.titleJournal of Spatial Science
curtin.note

The Version of Record of this manuscript has been published and is available in Journal of Spatial Science, 2006. http://www.tandfonline.com/10.1080/14498596.2006.9635062

curtin.departmentDepartment of Spatial Sciences
curtin.accessStatusOpen access


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