Comparison of multi-scale digital elevation models for defining waterways and catchments over large areas
Article
Article Title | Comparison of multi-scale digital elevation models for defining waterways and catchments over large areas |
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ERA Journal ID | 213033 |
Article Category | Article |
Authors | Harris, Bruce (Author), McDougall, Kevin (Author) and Barry, Michael (Author) |
Editors | Shortis, M., Shi, J. and Guilbert, E. |
Journal Title | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
Journal Citation | 1-2, pp. 75-80 |
Number of Pages | 6 |
Year | 2012 |
Publisher | Copernicus GmbH |
Place of Publication | Göttingen, Germany |
ISSN | 2194-9042 |
2194-9050 | |
2196-6346 | |
Digital Object Identifier (DOI) | https://doi.org/10.5194/isprsannals-I-2-75-2012 |
Web Address (URL) | http://www.isprs-ann-photogramm-remote-sens-spatial-inf-sci.net/I-2/75/2012/isprsannals-I-2-75-2012.html |
Abstract | Digital Elevation Models (DEMs) allow for the efficient and consistent creation of waterways and catchment boundaries over large areas. Studies of waterway delineation from DEMs are usually undertaken over small or single catchment areas due to the nature of the problems being investigated. Improvements in Geographic Information Systems (GIS) techniques, software, hardware and data allow for analysis of larger data sets and also facilitate a consistent tool for the creation and analysis of waterways over extensive areas. However, rarely are they developed over large regional areas because of the lack of available raw data sets and the amount of work required to create the underlying DEMs. This paper examines definition of waterways and catchments over an area of approximately 25,000 km² to establish the optimal DEM scale required for waterway delineation over large regional projects. The comparative study analysed multi-scale DEMs over two test areas (Wivenhoe catchment, 543 km² and a detailed 13 km² |
Keywords | digital elevation models, waterways, geographic information systems, regional areas, Lidar |
ANZSRC Field of Research 2020 | 401302. Geospatial information systems and geospatial data modelling |
Byline Affiliations | School of Civil Engineering and Surveying |
Engineering and Surveying | |
BMT WBM, Australia | |
Institution of Origin | University of Southern Queensland |
Book Title | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Technical Commission II |
https://research.usq.edu.au/item/q16w0/comparison-of-multi-scale-digital-elevation-models-for-defining-waterways-and-catchments-over-large-areas
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