GSTDTAP  > 气候变化
DOI10.1029/2018GL081636
Attenuation of Storm Surges by Coastal Mangroves
Montgomery, J. M.1; Bryan, K. R.1; Mullarney, J. C.1; Horstman, E. M.1,2
2019-03-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2019
卷号46期号:5页码:2680-2689
文章类型Article
语种英语
国家New Zealand; Netherlands
英文摘要

The interaction between mangroves and storm surges is explored using an analytical solution. A simplified momentum equation, balancing vegetation drag and pressure gradient, is combined with the continuity equation resulting in a diffusion equation. Assuming a simplified environment, a one-dimensional analytical solution is obtained to predict peak surge level across a forest. The solution accurately reproduces peak water level of a 10-year return period flood event in mangroves in the Firth of Thames, New Zealand, and in Ten Thousand Islands, Florida, during Hurricane Charley. Vegetation properties that determine the capacity of mangroves to reduce surges are forest density and cross-shore extent. Storm characteristicsflood duration and peak water level at the forest fringealso influence surge attenuation. Mangroves are shown to be an effective form of coastal flood protection if forests are sufficiently wide/dense, relative to the surge decay length scale, to restrict water exchange during a storm.


Plain Language Summary Storm-driven flooding is a major hazard in low-lying coastal areas. Mangroves have previously been shown to provide effective coastal protection from storm waves. However, there is sparse evidence that mangroves reduce storm surge, which is the temporary increase in water level resulting from the combination of high winds and low atmospheric pressure during a weather event. Here we demonstrate that mangroves can reduce water flow and store water, thus helping to reduce peak surge water levels. We show that if forests are sufficiently wide, water levels within (and landward of) the mangroves are substantially lower than for a scenario in which mangroves are absent. The density of the vegetation, cross-shore extent of the forest, and characteristics of the surge (duration and amplitude) all influence water-level reduction in the forest.


英文关键词mangrove flood coastal protection inundation analytic vegetation
领域气候变化
收录类别SCI-E
WOS记录号WOS:000462612900039
WOS关键词PROPAGATION ; PROTECTION ; FORESTS
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/181629
专题气候变化
作者单位1.Univ Waikato, Sch Sci, Fac Sci & Engn, Hamilton, New Zealand;
2.Univ Twente, Fac Engn Technol, Water Engn & Management, Enschede, Netherlands
推荐引用方式
GB/T 7714
Montgomery, J. M.,Bryan, K. R.,Mullarney, J. C.,et al. Attenuation of Storm Surges by Coastal Mangroves[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(5):2680-2689.
APA Montgomery, J. M.,Bryan, K. R.,Mullarney, J. C.,&Horstman, E. M..(2019).Attenuation of Storm Surges by Coastal Mangroves.GEOPHYSICAL RESEARCH LETTERS,46(5),2680-2689.
MLA Montgomery, J. M.,et al."Attenuation of Storm Surges by Coastal Mangroves".GEOPHYSICAL RESEARCH LETTERS 46.5(2019):2680-2689.
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