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https://hdl.handle.net/11681/25167| Title: | An aerial photographic technique for beach erosion surveys in North Carolina |
| Authors: | Stafford, Donald B. |
| Keywords: | Aerial photogrammetry Beach erosion--North Carolina |
| Publisher: | Coastal Engineering Research Center (U.S.) |
| Series/Report no.: | Technical memorandum;no. 36 |
| Abstract: | Abstract: This study presents a procedure developed to use existing aerial photographs to survey beach erosion. The use of the procedure is illustrated by data from Onslow and Carteret Counties in North Carolina. A preliminary evaluation of the results obtained in these two counties is given. The procedure is applicable to a variety of conditions and has important advantages over other methods of collecting beach erosion data. The procedure consists of selecting stable reference points on aerial photographs taken in different years and measuring between the stable reference points and points on the transient beach. The measurements are converted to ground distances, and the difference in ground distance is computed. The difference in ground distance represents the change in location of the beach between the dates of the aerial photographs and is converted to an annual rate of change by dividing by the time interval. The change in two locations on the beach, the dune line and the high water line, is determined. A special effort was made to reduce the effects of the errors inherent in aerial photographs. An extensive review of the literature concerning the applications of aerial photographs to investigations of coastal phenomena is included. |
| Description: | Technical Memorandum |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/25167 |
| Appears in Collections: | Technical Memorandum |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| CERC Technical Memorandum No 36.pdf | 19.07 MB | Adobe PDF |  View/Open |