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Errors in digital elevation models derived from airborne geophysical data

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Created 20/01/2025

Updated 20/01/2025

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A digital elevation model (DEM) is a digital representation of the height of the terrain usually interpolated onto a regularly spaced grid. Traditionally, DEMs have been estimated from ground surveys, digitised topographic maps, satellite (SPOT) images and aerial photography. Since the advent of the Global Positioning System (GPS) for aircraft navigation, DEMs can be derived from positional and aircraft radar altimeter data recorded on airborne geophysical surveys. A DEM is useful in any situation where knowledge of the height, slope and aspect of the ground is important. DEMs are widely used in the following landscape studies - botanical, geochemical, environmental, forest, soil, geological, climatological, geophysical, glaciological and natural hazard (eg landslide). Florinsky (1988) gives a comprehensive list of applications for DEMs. These include:

stream flow modelling landscape analysis land use and soil mapping geological/geophysical mapping road design and other engineering projects

Although DEMs have been derived from airborne geophysical survey data for several years, there is little information available on the precision and accuracy of these models. The purpose of this paper is to review the procedure for generating an airborne geophysical survey DEM and to investigate the sources and amplitudes of errors in these models.

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Title Errors in digital elevation models derived from airborne geophysical data
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/a4f18d4e-7118-45f4-a8dc-e3e92ca61379
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage http://www.ga.gov.au/place-names/PlaceDetails.jsp?submit1=GA1
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Errors in digital elevation models derived from airborne geophysical data". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/errors-in-digital-elevation-models-derived-from-airborne-geophysical-data

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