Variability In Long-Wave Runup as a Function of Nearshore Bathymetric Features

doi:10.2172/1236060

GSTDTAP > 地球科学

DOI	10.2172/1236060
报告编号	DOE TEES 64644--1
来源ID	OSTI ID: 1236060
	Variability In Long-Wave Runup as a Function of Nearshore Bathymetric Features
	Dunkin, Lauren McNeill [Texas A & M Univ., College Station, TX (United States)]
	2010-05-01
出版年	2010
页数	120
语种	英语
国家	美国
领域	地球科学
英文摘要	Beaches and barrier islands are vulnerable to extreme storm events, such as hurricanes, that can cause severe erosion and overwash to the system. Having dunes and a wide beach in front of coastal infrastructure can provide protection during a storm, but the influence that nearshore bathymetric features have in protecting the beach and barrier island system is not completely understood. The spatial variation in nearshore features, such as sand bars and beach cusps, can alter nearshore hydrodynamics, including wave setup and runup. The influence of bathymetric features on long-wave runup can be used in evaluating the vulnerability of coastal regions to erosion and dune overtopping, evaluating the changing morphology, and implementing plans to protect infrastructure. In this thesis, long-wave runup variation due to changing bathymetric features as determined with the numerical model XBeach is quantified (eXtreme Beach behavior model). Wave heights are analyzed to determine the energy through the surfzone. XBeach assumes that coastal erosion at the land-sea interface is dominated by bound long-wave processes. Several hydrodynamic conditions are used to force the numerical model. The XBeach simulation results suggest that bathymetric irregularity induces significant changes in the extreme long-wave runup at the beach and the energy indicator through the surfzone.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/5113
专题	地球科学
推荐引用方式 GB/T 7714	Dunkin, Lauren McNeill [Texas A & M Univ., College Station, TX . Variability In Long-Wave Runup as a Function of Nearshore Bathymetric Features,2010.