Large-Area, High-Resolution Remote Sensing Based Mapping of Alluvial Gully Erosion in Australia’s Tropical Rivers
MetadataShow full item record
Alluvial gully erosion is a dominant sediment source of many large rivers draining into the Gulf of Carpentaria. Recent field reconnaissance and aerial survey has highlighted that gullies have a considerable impact on the landscape. In order to understand alluvial gully erosion it is essential that a detailed survey of the nature and extent of alluvial gully erosion be undertaken. Remote sensing is the only practical approach for undertaking this assessment due to the extent and nature of gully erosion in Australia's tropical rivers. In this paper a two level method for mapping gully erosion in Australia's tropical rivers is reported that uses Aster (Advanced Spaceborne Thermal Emission and Reflection Radiometer) satellite image data as the regional level data source. The first level is a data centred remote sensing overview and the second level is a remote sensing image analysis method. Results of a pilot study looking at a 600km2 section of the Mitchell River demonstrate feasibility of the method. The results illustrate a variable scale approach for mapping alluvial gully extent and density with potential for a range of regional scale mapping applications.
Proceedings of the 5th Australian Stream Management conference
Copyright remains with the authors 2007. The attached file is posted here with permission of the copyright owners for your personal use only. No further distribution permitted. For information about this conference please refer to the publisher's website or contact the authors.