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原文传递 Barrier Island Morphological Change by Bay-Side Storm Surge

题名：	Barrier Island Morphological Change by Bay-Side Storm Surge
其他题名：	Arcadis U.S.(2013)."ADCIRC based storm surge analysis of sea level rise in the Corpus Christi Bay area."Publication CBBEP 86,Highlands Ranch,CO.
正文语种：	英文
作者：	Stephanie M. Smallegan
关键词：	morphological；barrier；simulation；erosion；presence；storm；conditions；extreme；structure；observe
摘要：	Barrier island overwash and breaching are caused by inundation from ocean storm surge and waves or from elevated levels of bay water. According to numerical simulations, a developed barrier island in New Jersey experienced major overwash and some breaching during Hurricane Sandy in 2012 as a result of an extreme rise in bay surge within Barnegat Bay 6 h after peak ocean surge. In this study, a sensitivity analysis was conducted on the effects of peak bay-surge timing and magnitude on the morphological change in the presence and absence of a seawall. Results from the numerical model indicate that the timing of the peak bay surge in the northern portion of Barnegat Bay was a major contributor to the damage observed at nearby locations along the barrier island. By shifting bay-surge timing, island erosion was reduced up to 130％, mostly on the back barrier, the location of the majority of coastal infrastructure. Additionally, simulations show that a seawall protected the island from severe erosion by preventing ocean and bay surge from flowing freely across the island. In the absence of a seawall, the elevation of the island was significantly eroded under Hurricane Sandy conditions, where erosion was exacerbated by increases in bay-surge magnitude.
出版年：	2017
论文唯一标识：	P-108Y2017V143N05018
英文栏目名称：	TECHNICAL PAPERS
doi：	10.1061/(ASCE)WW.1943-5460.0000413
期刊名称：	Journal of Waterway, Port, Coastal, and Ocean Engineering
拼音刊名(出版物代码)：	P-108
卷：	143
期：	05
页码：	210-219