Surveys of Coastal Structures
COASTAL ENGINEERING RESEARCH CENTER VICKSBURG MS
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To describe the potential use of photogrammetric surveys for coastal structures. The jetty rehabilitation project at Manasquan Inlet, New Jersey, was selected for monitoring in 1982, under the Operation and Maintenance funded Monitoring Completed Coastal Projects MCCP Program. In view of the historic problems with maintaining the integrity of the quarrystone armor layers of the jetties and the relative lack of prototype experience with dolosse on the US east coast, a technique was needed to accurately monitor the performance of the dolosse at Manasquan Inlet and to verify. the validity of the design procedures and assumptions used in the rehabilitation effort. As a part of the monitoring effort, a test was performed to evaluate the usefulness of photogrammetry for measuring armor unit motion on the jetties. Manasquan Inlet was an excellent location for the test, since it had both dolosse and rubble armor and was easily accessible for conventional land surveying techniques. The success of the test has resulted in the use of photogrammetry at Crescent City, California, and plans for its use at two breakwaters in Hawaii.
- Cartography and Aerial Photography
- Civil Engineering
- Test Facilities, Equipment and Methods