Potential impact of sea level rise on coastal surges in southeast Louisiana
Potential impact of sea level rise on coastal surges in southeast Louisiana
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DOI：
10.1016/j.oceaneng.2009.07.008
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发表时间：
2010
影响因子：
5
通讯作者：
J. Smith;M. Cialone;T. Wamsley;T. McAlpin
中科院分区：
文献类型：
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作者：
J. Smith;M. Cialone;T. Wamsley;T. McAlpin
采用数值风暴潮模式ADCIRC和近岸谱波模式STWAVE研究了0.5 m和1.0m相对海平面上升对路易斯安那州东南部飓风风暴潮和海浪的潜在影响。这些模型应用于六个假设飓风，这些飓风在路易斯安那州东南部产生大约100年的水位。在最大浪涌区域，RSLR对浪涌的影响一般呈线性（等于RSLR）。在中等峰值浪涌（2-3m）的湿地或湿地前缘地区，浪涌水位增加了1-3m（除了RSLR）。在广大地区，激增的增幅相当于RSLR的两倍到三倍，在偏远地区则高达RSLR的五倍。由于RSLR和浪涌增加导致的水深增加，浅层波浪明显增加。模拟风暴的浪高最大增幅为1-1.5m。在宽广、浅的湿地地区，浪涌传播对RSLR高度敏感。所有RSLR病例的波高也普遍增加。这些增长是显著的（1m RSLR为0.5-1.5m），但没有激增的增长那么显著。
Potential impacts of 0.5 and 1.0m of relative sea level rise (RSLR) on hurricane surge and waves in southeast Louisiana are investigated using the numerical storm surge model ADCIRC and the nearshore spectral wave model STWAVE. The models were applied for six hypothetic hurricanes that produce approximately 100yr water levels in southeastern Louisiana. In areas of maximum surge, the impact of RSLR on surge was generally linear (equal to the RSLR). In wetland or wetland-fronted areas of moderate peak surges (2–3m), the surge levels were increased by as much as 1–3m (in addition to the RSLR). The surge increase is as much as double and triple the RSLR over broad areas and as much as five times the RSLR in isolated areas. Waves increase significantly in shallow areas due to the combined increases in water depth due to RSLR and surge increases. Maximum increases in wave height for the modeled storms were 1–1.5m. Surge propagation over broad, shallow, wetland areas is highly sensitive to RSLR. Wave heights also generally increased for all RSLR cases. These increases were significant (0.5–1.5m for 1m RSLR), but less dramatic than the surge increases.