Conference poster
Integration of UAV and ground-based Structure from Motion with Multi-View Stereo photogrammetry and hydrological data to quantify hillslope gully erosion processes in tropical savanna
American Geophysical Union (AGU) Fall Meeting, 2017 (New Orleans, United States, 11-Dec-2017–15-Dec-2017)
American Geophysical Union
2017
Abstract
Structure from Motion with Multi-View Stereo (SfM-MVS) photogrammetry provides a cost-effective method of rapidly acquiring high resolution (sub-meter) topographic data, but is rarely used in hydrogeomorphic investigations of gully erosion. This study integrates high resolution topographic and land cover data derived from an unmanned aerial vehicle (UAV) and ground-based SfM-MVS photogrammetry, with rainfall and gully discharge data, to elucidate hydrogeomorphic processes driving hillslope gully erosion. The study is located within a small (13 km2) dry-tropical savanna catchment within the Burdekin River Basin, northeast Australia, which is a major contributor sediments and nutrients to the Great Barrier Reef World Heritage Area. A pre-wet season UAV survey covered an entire hillslope gully system (0.715 km2), and is used to derive topography, ground cover and hydrological flow pathways in the gully contributing area. Ground-based surveys of a single active gully (650 m2) within the broader hillslope are compared between pre- and post-wet season conditions to quantify gully geomorphic change. Rainfall, recorded near to the head of the gully, is related to gully discharge during sporadic storm events. The study provides valuable insights into the relationships among hydrological flow pathways, ground cover, rainfall and runoff, and spatial patterns of gully morphologic change. We demonstrate how UAV and ground-based SfM-MVS photogrammetry can be used to improve hydrogeomorphic process understanding and aid in the modelling and management of hillslope gully systems.
Details
- Title
- Integration of UAV and ground-based Structure from Motion with Multi-View Stereo photogrammetry and hydrological data to quantify hillslope gully erosion processes in tropical savanna
- Authors
- Jack Koci (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringBen Jarihani (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringRoy C Sidle (Author) - University of the Sunshine CoastScott Norman Wilkinson (Author) - CSIRORebecca Bartley (Author) - CSIRO
- Conference details
- American Geophysical Union (AGU) Fall Meeting, 2017 (New Orleans, United States, 11-Dec-2017–15-Dec-2017)
- Publisher
- American Geophysical Union
- Date published
- 2017
- Organisation Unit
- School of Social Sciences - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Sustainability Research Cluster
- Language
- English
- Record Identifier
- 99451250702621
- Output Type
- Conference poster
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