Accession Number : ADA575183


Title :   Frequency of Extreme Storms Based on Beach Erosion at Northern Assateague Island, Maryland


Descriptive Note : Journal article


Corporate Author : ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB


Personal Author(s) : Munger, Sophie ; Kraus, Nicholas C


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a575183.pdf


Report Date : Jan 2010


Pagination or Media Count : 10


Abstract : This paper examines morphologic response to storms at northern Assateague Island MD. Time series of hindcast waves and water level were input to drive the SBEACH beach erosion and overwash numerical model to estimate beach response, ground-truthed by documentation and available evidence of storms that caused significant morphologic change at the site. The analysis proceeded through application of the generalized Pareto distribution, with tropical and extratropical storms treated as separate populations. Five storm-related parameters were examined and correlated with volume of beach erosion: peak surge, peak water level (surge plus tide), storm duration, and two new parameters called the integrated hydrograph and the integrated significant wave height, integrated referring to the product of time and water level or wave height above a threshold. Storm-induced erosion was found to be only weakly correlated or not correlated with the individual parameters of peak storm surge and peak water level. For tropical storms, erosion is strongly correlated with integrated wave height, and to a lesser extent with storm duration and integrated hydrograph whereas for extratropical storms, erosion is found to be significantly correlated with the integrated hydrograph and to a lesser extent with integrated wave height and storm duration.


Descriptors :   *BEACH EROSION , DUNES , HURRICANES , MARYLAND , STORMS , WAVES


Subject Categories : Meteorology
      Physical and Dynamic Oceanography


Distribution Statement : APPROVED FOR PUBLIC RELEASE