LITTORAL IMPACT OF OCEAN CITY INLET, MARYLAND, USA

[摘要] Ocean City Inlet, Maryland presents a data-rich site for evaluating the total littoral impact of an inlet system with a significant adjacent beach response. Analysis of adjacent beach and bay shoreline data, adjacent beach profiles, ebb and flood shoal evolution, and dredge/fill history provided a database with which the inlet's littoral impact to adjacent beaches was quantified. The even/odd method, which decomposes shoreline changes into their symmetric (even) and antisymmetric (odd) components about a point of significance, was applied to the volume change dataset. This analysis indicated a present-day (1996) alongshore impact distance of 8 to 13 km from the centerline of the inlet. A second method, which relates the total "inlet sink" volume to adjacent island (ocean and bay) volume change, was also applied. The total inlet sink volume ranged from 10.8 to 15.6 million m3, and reflects the volume of material captured by the inlet which is assumed to have been derived from adjacent beaches. The inlet sink method indicated that, at most, 10.8 million m3 can be realized within ±.14.2 km (data limit). The paper concludes that the alongshore impact of Ocean City Inlet most likely extends beyond ±.14.2 km.

[学科分类] 建筑学

[关键词] littoral impact;inlet;Ocean City Inlet;Maryland