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Immediate effects of Hurricane Ike on beaches of the upper Texas coast

机译：飓风艾克对得克萨斯州上游海岸的海滩的即时影响

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摘要

Disturbance events such as hurricanes on sandy beaches can cause change in community assemblages. They also have the potential to cause massive, episodic sediment reworking and resuspension. On 13 September 2008, Hurricane Ike made landfall on the upper Texas coast causing extensive damage and erosion. Although a Category 2 storm on the Saffir-Simpson scale, the highest accompanying observed surge of 5.33 m in Chambers County was unusually high, resulting in significant changes in profiles, sediments, and infaunal communities of sandy beaches. To investigate these impacts, macrofaunal and sedimentological features of the intertidal zone were compared before and after Hurricane Ike at four beaches along the upper Texas coast. Roughly 0.5 meters of vertical height was lost at each beach post-storm. Sediment grain size increased with a decrease evident in the finer size fractions. Macrofaunal taxa richness declined by 33%. Total macrofaunal abundance declined <13% of pre-storm values and observed changes in abundance were statistically significant for each beach.
机译：诸如飓风在沙滩等干扰事件可能会导致社区群体的变化。它们还可能引起大规模的，偶发性的沉积物再加工和再悬浮。 2008年9月13日，艾克飓风在得克萨斯州上海岸登陆，造成广泛破坏和侵蚀。尽管在Saffir-Simpson规模上发生了2级暴风雨，但在钱伯斯县观察到的最高伴随浪涌为5.33 m，异常高，导致沙滩的剖面，沉积物和臭名昭著的群落发生了显着变化。为了调查这些影响，在得克萨斯州上沿海岸的四个海滩上，比较了艾克飓风前后潮间带的大型动物和沉积学特征。每次风暴过后的海滩，垂直高度大约损失0.5米。沉积物粒度增加，而细粒级分则明显减少。大型动物类群的丰富度下降了33％。总的大型动物丰度下降了小于暴风前值的13％，并且观察到的每个海滩的丰度变化在统计学上均具有统计学意义。

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