Do Storms Cause Long‐Term Beach Erosion along the U.S. East Barrier Coast?
Do Storms Cause Long‐Term Beach Erosion along the U.S. East Barrier Coast?
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DOI：
10.1086/340633
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发表时间：
2002-07
期刊：
影响因子：
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通讯作者：
Keqi Zhang;B. Douglas;S. Leatherman
中科院分区：
文献类型：
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作者：
Keqi Zhang;B. Douglas;S. Leatherman
在几个小时或几天内，由于严重的风暴，几十米宽的海滩可能会消失。然而，来自美国东海岸的最新海岸线数据显示，海滩在风暴后恢复到与其长期（100年以上）趋势一致的位置。即使是最大的风暴，如1962年的圣灰星期三风暴，被认为是20世纪最具破坏性的风暴，似乎也对长期趋势没有什么影响。美国东海岸沿着海滩的逐渐衰退主要受海平面上升和沉积物供应变化等其他因素的控制。因此，如果海平面停止上升，沉积物供应没有变化，那么沿海平原环境中的屏障海滩不会因风暴影响而遭受长期侵蚀。
In a few hours or days, scores of meters of beach width can be lost due to a severe storm. However, newly available shoreline data from the U.S. East Coast show that beaches recover after storms to positions consistent with their long‐term (100+ yr) trend. Even the largest storms, such as the Ash Wednesday Storm of 1962, considered to be the most damaging in the twentieth century, appear to have had little effect on the long‐term trend. The gradual recession of beaches along the U.S. East Coast is mainly controlled by other factors such as sea‐level rise and variations of sediment supply. Therefore, it follows that barrier beaches in a coastal plain setting would not experience long‐term erosion in response to storm impact if the sea were to stop rising and sediment supply did not change.