Geomorphological Response to Extreme Events, Great Kills Park, Gateway National Recreation Area Norbert P. Psuty, Andrea J. Spahn, William J. Schmelz Sandy.

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Geomorphological Response to Extreme Events, Great Kills Park, Gateway National Recreation Area Norbert P. Psuty, Andrea J. Spahn, William J. Schmelz Sandy Hook Cooperative Research Programs Institute of Marine and Coastal Sciences Rutgers – The State University of New Jersey Sandy Hook, New Jersey

Gateway National Recreation Area Great Kills Park Resources impacted by erosion Management to be science based Geotemporal dimensions

LiDAR Source: J.C., al. 2006, USGS-NPS-NASA Bare Earth Topography Sagamore Hill NHS, USGS Open File Report (On CD). Source : Park on site of former Barrier Island

Park site - Limited sediment input from updrift - buffering of incident waves by marsh remnant

Mar

Water Level and Threshold 2010

LiDAR Data Source: Brock, J.C., et al. 2006, USGS-NPS-NASA Bare Earth Topography Sagamore Hill NHS, USGS Open File Report (On CD). November 2009 to March 2010 Elevation change - Volume change

Plus anthropogenic

Water Level and Storm Threshold

Superstorm Sandy - Elevation Change - Volume Change by Compartment - Dune is positive element

June 19, 2013

Diffraction downdrift of remnant marsh - Expanding log-spiral erosion, extending downdrift greater mobilization with storm magnitude - Dune is positive element ‘natural’ versus manipulated

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