Journal
GEOMORPHOLOGY
Volume 270, Issue -, Pages 1-8Publisher
ELSEVIER
DOI: 10.1016/j.geomorph.2016.06.018
Keywords
Kite Aerial Photography; 3D topography; Coral reef morphodynamics
Funding
- Scots College, Sydney
- Vila-Concejo Future Fellowship [100100215]
- ECRDS grant by the Faculty of Engineering and IT, University of Sydney
- Australian Research Council [LP098999]
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Measurements of geomorphic change in the intertidal zones of coral reefs are made using a variety of remote sensing and in-situ techniques, where variations in the coverage and spatial-temporal precision achieved are directly related to the cost of data acquisition. We present a novel, low-cost technique for measuring high resolution changes in reef environments based on Kite Aerial Photography (KAP) and photogrammetry/structure-from-motion post-processing. KAP images are used to measure fine-scale changes in intertidal topography and sediment texture characteristics, including rubble particle size, of a coral shingle cay at One Tree Island, Great Barrier Reef in the context of storm activity. Validation using Real Time Kinematic DGPS demonstrates the ability to measure topographic elevation with an error of 5.53 cm (RMSE) and a spatial resolution of 5 cm per point, an accuracy/resolution that is superior to airborne LiDAR and equivalent to terrestrial LiDAR, but at a fraction of the equipment cost. (C) 2016 Elsevier B.V. All rights reserved.
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