Automated mapping of Hammond's landforms

We automated a method for mapping Hammond's landforms over large landscapes using digital elevation data. We compared our results against Hammond's published landform maps, derived using manual interpretation procedures. We found general agreement in landform patterns mapped by the manual...

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Bibliographic Details
Published in:IEEE geoscience and remote sensing letters 2005-10, Vol.2 (4), p.384-388
Main Authors: Gallant, A.L., Brown, D.D., Hoffer, R.M.
Format: Article
Language:English
Subjects:
Appropriate technology
Classification
digital elevation model (DEM)
Digital elevation models
Frequency
geographic information system (GIS)
Geographic Information Systems
Geology
Hammond
Humans
landform
mapping
Moisture
Remote sensing
Surfaces
terrain
Terrain mapping
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Summary:We automated a method for mapping Hammond's landforms over large landscapes using digital elevation data. We compared our results against Hammond's published landform maps, derived using manual interpretation procedures. We found general agreement in landform patterns mapped by the manual and the automated approaches, and very close agreement in characterization of local topographic relief. The two approaches produced different interpretations of intermediate landforms, which relied upon quantification of the proportion of landscape having gently sloping terrain. This type of computation is more efficiently and consistently applied by computer than human. Today's ready access to digital data and computerized geospatial technology provides a good foundation for mapping terrain features, but the mapping criteria guiding manual techniques in the past may not be appropriate for automated approaches. We suggest that future efforts center on the advantages offered by digital advancements in refining an approach to better characterize complex landforms.
ISSN:1545-598X
1558-0571
DOI:10.1109/LGRS.2005.848529