Coastal Geomorphological Evolution at Plumb Beach: Sediment … · 2017. 10. 29. · Coastal...
Transcript of Coastal Geomorphological Evolution at Plumb Beach: Sediment … · 2017. 10. 29. · Coastal...
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Coastal Geomorphological Evolution at Plumb Beach:
Sediment Budget and Management Norbert P. Psuty
Andrea Spahn William Schmelz
Sandy Hook Cooperative Research Programs Institute of Marine and Coastal Sciences Rutgers – The State University of New Jersey Highlands, New Jersey 07732
Jamaica Bay / Urban Resilience October, New York
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Plumb Beach
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Issues of Sediment Management
Geomorphological Evolution under negative sediment budget
Attempts at coastal stability
Impacts of erosion
Impacts of deposition
Sediment recycling??
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Remnant barrier island isolated by migration isolated by dredging negative sediment budget displaced inland fill for highway limited incident waves
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Transport Vectors
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Shoreline Displacement, 1924-2008
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Comfort Station
Shoreline position Shore perpendicular and shore parallel sand ridges Spit extending over wetland
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April 1994 aerial photo
72,000 m3
Placed in central portion 1992
Modest accumulation Alongshore, into wetlands
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Beach face stabilized, upper beach and pathway eroded
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Dune and beach atop marshland, extending downdrift and inland
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Change in Elevation
September 2008 – September 2012
Net Change: -14,425 m3 Total Accretion: 7,339.14 m3
Total Erosion: 21,764.977 m3
Sediment loss >2X Downdrift erosion Lessen wetland impacts New nearshore pathway
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Coastal Geomorphological Evolution at Plumb Beach:
Sediment Budget and Management, A consideration of losses and gains
Norbert P. Psuty Andrea Spahn
William Schmelz Sandy Hook Cooperative Research Programs
Institute of Marine and Coastal Sciences Rutgers – The State University of New Jersey Highlands, New Jersey 07732 Jamaica Bay / Urban Resilience
October, New York