Coastal protection from tsunamis and cyclones provided by mangrove wetlands – a review

TLDR: In this article, the authors conducted a review of recent research regarding the extent of coastal protection provided by mangroves that includes observational studies, numerical modeling, and laboratory experiments, and concluded that observational studies have not provided conclusive results on the effect of extreme natural disasters such as cyclone storm surges and small tsunamis.

Abstract: Coastal human settlements are becoming increasingly vulnerable to natural disasters such as tsunamis and cyclones. Recent events, including the Indian Ocean Tsunami in 2004 and Typhoon Haiyan in 2013, have brought the issue of coastal protection to the forefront in many countries across the globe. We conducted a review of recent research regarding the extent of coastal protection provided by mangroves that includes observational studies, numerical modeling, and laboratory experiments. We described our findings in a unique outline based on the methodology and event type and concluded that observational studies have not provided conclusive results on the extent of coastal protection provided by mangroves from extreme natural disasters. However, results from several recent numerical and physical models support the mitigating capabilities of mangroves for cyclone storm surges and small tsunamis. Studies on the economic valuation of mangroves have estimated coastal protection to be a major portion of their tot...