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St. Petersburg Coastal and Marine Science Center > National Assessment of Storm-Induced Coastal Change Hazards > Hurricane Joaquin

National Assessment of Storm-Induced Coastal Change Hazards

Hurricane Joaquin Storm Response

Pre- and Post-Storm Photo Comparisons - New York

Hurricane Joaquin, though it did not make direct landfall on the U.S. coastline, affected a broad swath of mid-Atlantic and North-eastern states, from South Carolina to Massachusetts. Onshore winds from Joaquin combined with a non-tropical low pressure system led to high waves and elevated total water levels that impacted the coast for several days, causing extensive beach and dune erosion and even overwash in some locations. Here, photos pairs are used to compare the pre-storm and post-storm conditions at locations representing a broad range of coastal configurations and their response to the storm. Pre-storm photos were acquired during a baseline survey on October 6, 2014 and post-storm photos were acquired October 7, 2015.

Location Map
Location Map.

pre- and post-storm photos
Location 1: Oblique aerial photographs of Old Inlet, NY. View looking east along the Long Island shore. The inlet, which reopened during Hurricane Sandy, shows dramatic change in the year between the two photos. Most notably, the flood tidal delta (green arrow) has become larger and more emergent. The yellow arrow in each image points to the same feature. [larger version]

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pre- and post-storm photos
Location 2: Oblique aerial photographs of West Hampton Dunes, NY. View looking north along the Long Island shore. The wrack line (green arrow) indicates that waves and storm surge did not reach the dune toe in this location during Hurricane Joaquin. The yellow arrow in each image points to the same feature. [larger version]

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pre- and post-storm photos
Location 3: Oblique aerial photographs of Westhampton Beach, NY. View looking north along the Long Island shore. The beach here shows evidence of downdrift erosion (green arrow) where the beach is narrower on one side of the groin. Alongshore processes are typically driven by long-term sediment transport, rather than storm-induced waves and water levels. The yellow arrow in each image points to the same feature. [larger version]

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pre- and post-storm photos
Location 4: Oblique aerial photographs of Westhampton Beach, NY. View looking north along the Long Island shore. The beach here has been uniformly eroded on both sides of the groin, which has become more exposed. A beach scarp and dark sand indicates that Hurricane Joaquin caused some beach erosion at this location. The yellow arrow in each image points to the same feature. [larger version]

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pre- and post-storm photos
Location 5: Oblique aerial photographs of Westhampton Beach, NY. View looking north along the Long Island shore. The beach has become narrower and a dune scarp indicates that waves and surge from Hurricane Joaquin reached the dune toe. The yellow arrow in each image points to the same feature. [larger version]

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pre- and post-storm photos
Location 6: Oblique aerial photographs of East Quogue, NY. View looking north along the Long Island shore. The beach here has accreted since 2014, likely due to long-term coastal processes. The yellow arrow in each image points to the same feature. [larger version]

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pre- and post-storm photos
Location 7: Oblique aerial photographs of East Hampton, NY. View looking north along the Long Island shore. The Georgica Pond inlet reopened during Hurricane Joaquin and sand was transported landward from the beach into the pond. A scarp on the south side of the inlet is the evidence of recent breaching. The yellow arrow in each image points to the same feature. [larger version]

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pre- and post-storm photos
Location 8: Oblique aerial photographs of Montauk, NY. View looking north along the Long Island shore. Long-term erosion of the glacial sediments has exposed a paleochannel, or ancient riverbed, in the cliff. Above the unconformity (green arrow) sediment layers are oriented near horizontal, following the curve of the ancient riverbed. While the sediment layers below the unconformity are difficult to see, the different pattern of erosion highlights the change in sediment cohesiveness. Additionally, minor erosion can be seen at the base of the cliff, possibly from larger waves generated by Hurricane Joaquin. The yellow arrow in each image points to the same feature. [larger version]

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St. Petersburg Coastal and Marine Science Center > National Assessment of Storm-Induced Coastal Change Hazards > Hurricane Joaquin

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