The Effects of Houses and Sand Fences on the Eolian Sediment Budget at Fire Island, New York

摘要: This study was conducted to identify the effects of houses and sand fences on dune dynamics a moderately developed barrier island. Wind velocity data gathered beneath around buildings built pilings in dunes revealed that isolated considerably reduced average winds. Cumulative surface elevation changes during 102 day period were less than 7.6 cm. A simulation sediment budget 1.9 per 10 linear meters crest would be deposited landward under natural conditions. Houses constructed at 25% density along reduce rate deposition by 13.8%. If are directly frontage 43% protected using fences, eolian transport 67.5%. Structures or near cause local increase height inland migration dune. Even moderate level development can strongly affect transfers, performance criteria should for new shorefront insure maintenance important characteristics system.