Journal
COMPUTERS & GEOSCIENCES
Volume 127, Issue -, Pages 85-90Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cageo.2019.03.004
Keywords
Coral reef; Metamodel; Wave; Water levels; Run-up; Flooding
Funding
- US Geological Survey (USGS) [G15AC00426]
- US Department of Defense's Strategic Environmental Research and Development Program [RC-2644]
- Spanish Ministerio de Educacion, Cultura y Deporte FPU studentship [30E-A-2013-12235]
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Wave-induced flooding is a major coastal hazard on tropical islands fronted by coral reefs. The variability of shape, size, and physical characteristics of the reefs across the globe make it difficult to obtain a parameterization of wave run-up, which is needed for risk assessments. Therefore, we developed the HyCReWW metamodel to predict wave run-up under a wide range of reef morphometric and offshore forcing characteristics. Due to the complexity and high dimensionality of the problem, we assumed an idealized one-dimensional reef profile, characterized by seven primary parameters. XBeach Non-Hydrostatic was chosen to create the synthetic dataset, and Radial Basis Functions implemented in MATLAB (R) were chosen for interpolation. Results demonstrate the applicability of the metamodel to obtain fast and accurate results of wave run-up for a large range of intrinsic reef morphologic and extrinsic hydrodynamic forcing parameters, offering a useful tool for risk management and early warning systems.
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