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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 - Maryland

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 5-6, 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 Assateague Island National Seashore, MD. View looking west along Assateague Island. Overwash occurred at the cut in the dunes where a dark sand deposit shows evidence of landward transport (green arrow). 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 Assateague Island National Seashore, MD. View looking west along Assateague Island. Standing water behind the dunes (green arrow) is often an indication that the beach has been inundated. At this location, however, there is no dune scarp or overwash fan that would indicate that the waves and surge from Joaquin reached the base or crest of the dune. The standing water seen in the post-storm image is likely from heavy rainfall. 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 Assateague Island National Seashore, MD. View looking west along Assateague Island. Low elevations between the dunes acted as channels to transport sand and water inland (green arrow). 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 Ocean City, MD. View looking west at Ocean City. High waves eroded the beach and sandbar resulting in a narrower beach and increased exposure of the groin (green arrow). 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 North Ocean City, MD. View looking west at North Ocean City. The dunes in this location have accreted and the dune vegetation has been covered by wind-blown sand (green arrows). Waves and surge from Hurricane Joaquin did not reach the dune toe but did cause erosion and narrowing of the beach. 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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Location 3 Location 4 Location 5 Location 1 Location 2