A RECONNAISSANCE OF COASTAL EROSION IN NORTH CAROLINA

A STUDY WAS CONDUCTED TO OBTAIN INFORMATION ON THE CHANGES IN SHORELINE ALONG THE NORTH CAROLINA COAST. THE METHODS EMPLOYED WERE AERIAL PHOTOGRAPHY, WAVE REFRACTION, AND SHORT TERM OBSERVATIONS. THEY WERE ALL FOUND TO PROVIDE SATISFACTORY, BUT DIFFERENT TYPES OF INFORMATION. THE AERIAL PHOTOGRAPHY STUDY YIELDED DIRECT HISTORICAL INFORMATION INDICATING THE MOVEMENT OF THE SHORELINE AND DUNE LINE AT APPROXIMATELY 1400 SELECTED POINTS ALONG THE COAST. THE MOVEMENT WAS THE RESULT OF LONG-TERM EROSIONAL TRENDS AND SPECIFIC MAJOR AND MINOR STORMS THAT MOVED ACROSS VARIOUS COASTAL AREAS. THE WAVE REFRACTION TECHNIQUE PROVIDED AN EXCELLENT MEANS OF STUDYING THE PREDOMINANT DIRECTION OF LITTORAL DRIFT. THE ACCURACY OF THE PROCEDURE DEPENDS UPON THE VALIDITY OF THE OFFSHORE TOPOGRAPHY AND THE SWELL DATA THAT WAS USED FOR INPUT INTO THE COMPUTATION PROCEDURE. THE SHORT-TERM OBSERVATIONS WERE FOUND TO PROVIDE THE OBSERVER WITH A GENERAL CONCEPT OF RECENT EROSIONAL TRENDS AND A KNOWLEDGE OF AREAS THAT ARE SUSCEPTIBLE TO POSSIBLE HEAVY DAMAGE FROM STORM CONDITIONS. GENERAL CONCLUSIONS ARE THAT: (1) THE GENERAL TREND ALONG THE NORTH CAROLINA COAST IS EROSION, (2) EROSION PRODUCED BY MAJOR STORMS IS A SIGNIFICANT PORTION OF THE TOTAL EROSION EXPERIENCED ALONG THE COAST, (3) THE INLETS SHOW A TENDANCY TO MIGRATE AND CHANGE SIZE AND DIRECTION, AND (4) THE PREDOMINANT LITTORAL DRIFT IS GENERALLY SOUTHERLY FOR THE EASTWARD FACING SECTIONS OF THE NORTH CAROLINA COAST WITH THE EXCEPTION OF BODIE ISLAND.

  • Supplemental Notes:
    • 161 Pp, FigS, TABS, 12 REF, 3 APP
  • Corporate Authors:

    North Carolina State University, Raleigh

    Department of Civil Engineering
    Raleigh, NC  USA  27695-7908
  • Authors:
    • Langfelder, J
    • STAFFORD, D
    • Amein, M
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00229671
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 15 2004 2:15AM