A global classification of coastal flood hazard climates associated with large-scale oceanographic forcing
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Rueda Zamora, Ana Cristina; Vitousek, Sean; Camus Braña, Paula; Tomás Sampedro, Antonio; Espejo Hermosa, Antonio; Losada Rodríguez, Iñigo; Barnard, P.L.; Erikson, P.L.; Ruggiero, P.L.; Reguero, Borja G.; Méndez Incera, Fernando JavierDate
2017-07Abstract
Coastal communities throughout the world are exposed to numerous and increasing threats, such as coastal flooding and erosion, saltwater intrusion and wetland degradation. Here, we present the first global-scale analysis of the main drivers of coastal flooding due to large-scale oceanographic factors. Given the large dimensionality of the problem (e.g. spatiotemporal variability in flood magnitude and the relative influence of waves, tides and surge levels), we have performed a computer-based classification to identify geographical areas with homogeneous climates. Results show that 75% of coastal regions around the globe have the potential for very large flooding events with low probabilities (unbounded tails), 82% are tide-dominated, and almost 49% are highly susceptible to increases in flooding frequency due to sea-level rise.
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