Marsh Erosion Processes near a Coastal Highway on the Outer Banks, NC

The northern sound-side shoreline of Pea Island, which is adjacent to Oregon Inlet on the Outer Banks, NC, is steadily eroding, increasing the proximity of the NC 12 highway to the Pamlico Sound. Field observations of bathymetry, sediment grain size, vegetation, and water levels, along with pre- and poststorm shoreline surveys were used to examine the spatial variability in hydrodynamics, morphodynamics, and vegetation in the region. Local hydrodynamics are driven by a complex interaction of ocean- and sound-side processes. Erosion is likely driven by inlet-driven processes and major storms causing overland flow. Spatial heterogeneity in erosion may be owing to differences in bathymetry, topography, sediment sizes, and vegetation. The field data are being used to calibrate a numerical model and develop planning level tools to improve the understanding of flooding and erosion and to enhance the sound-side resilience of a coastal transportation corridor.

• Record URL:
  • https://doi.org/10.1061/9780784483688.033
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784483688
• Supplemental Notes:
  • © 2021 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Wargula, Anna
  • Sciaudone, Elizabeth
  • Velásquez-Montoya, Liliana
  • Fawcett, Kelly
  • Amodeo, Marissa
  • Smyre, Elizabeth
  • Tomiczek, Tori
• Conference:
  • Geo-Extreme 2021
  • Location: Savannah Georgia, United States
  • Date: 2021-11-7 to 2021-11-10
• Publication Date: 2021

Language

• English

Media Info

• Media Type: Web
• Pagination: pp 329-338
• Monograph Title: Geo-Extreme 2021: Case Histories and Best Practices

Subject/Index Terms

• TRT Terms: Coasts; Erosion; Floods; Highways; Marshes
• Geographic Terms: Outer Banks (North Carolina)
• Subject Areas: Environment; Highways;

Filing Info

• Accession Number: 01788853
• Record Type: Publication
• ISBN: 9780784483688
• Files: TRIS, ASCE
• Created Date: Nov 18 2021 12:14PM