Journal
GEOMORPHOLOGY
Volume 102, Issue 3-4, Pages 460-471Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.geomorph.2008.05.011
Keywords
Coastal morphology; Vegetation cover; Parabolic dunes; Dune dynamics
Funding
- Volkswagen-stiftung
- Max Plank Prize
- DFG
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In this work we present measurements of vegetation cover over parabolic dunes with different degrees of activation along the north-eastern Brazilian coast. We extend the local values of the vegetation cover density to the whole dune by correlating measurements with the relative brightness index C of high resolution QuickBird panchromatic satellite images of the dune held. We then introduce the vegetation data into a continuous model for vegetated dunes, coupling sand erosion and vegetation growth, and perform simulations of the evolution of the morphology and vegetation cover of parabolic dunes. Finally, from the comparison of both, the measurements and the simulation results, we show that the model is able to predict the dune shape and the vegetation distribution of real parabolic dunes as result of the evolution of a blow-out. (c) 2008 Elsevier B.V. All rights reserved.
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