A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Design for Harbor Entrance Improvements, Wells Harbor, Maine. Hydraulic Model Investigation
A 1:50-scale (undistorted) hydarulic model of Wells Harbor, Maine, which included the entrance to the harbor, approximately 900 ft and 1100 ft of shoreline to the south and north of the harbor, respectively, and sufficient offshore area in the Gulf of Maine to permit generation of the required test waves, was used to investigate effects of proposed improvements at the harbor entrance on wave action. Proposed improvement plans consisted of the installation of stone spur dikes in the jettied entrance and a breakwater attached to the existing north jetty. A 20-ft-long wave generator, a model circulation system, and an automated data acquisition and control system were used in model operation. Model tests showed that during periods of moderate to large wave attack, the existing harbor entrance experiences hazardous navigation conditions due to breaking waves and interaction of waves with tidal currents. Several spur-dike, jetty and breakwater configurations were examined for their effect on wave conditions. Whether tidal velocities following installation of the proposed spur dikes will be sufficient to maintain a self-scouring channel at described navigable depths is beyond the scope of this investigation. However, qualitative indications are that the spur dikes will be beneficial in reducing maintenance dredging requirements.
Design for Harbor Entrance Improvements, Wells Harbor, Maine. Hydraulic Model Investigation
A 1:50-scale (undistorted) hydarulic model of Wells Harbor, Maine, which included the entrance to the harbor, approximately 900 ft and 1100 ft of shoreline to the south and north of the harbor, respectively, and sufficient offshore area in the Gulf of Maine to permit generation of the required test waves, was used to investigate effects of proposed improvements at the harbor entrance on wave action. Proposed improvement plans consisted of the installation of stone spur dikes in the jettied entrance and a breakwater attached to the existing north jetty. A 20-ft-long wave generator, a model circulation system, and an automated data acquisition and control system were used in model operation. Model tests showed that during periods of moderate to large wave attack, the existing harbor entrance experiences hazardous navigation conditions due to breaking waves and interaction of waves with tidal currents. Several spur-dike, jetty and breakwater configurations were examined for their effect on wave conditions. Whether tidal velocities following installation of the proposed spur dikes will be sufficient to maintain a self-scouring channel at described navigable depths is beyond the scope of this investigation. However, qualitative indications are that the spur dikes will be beneficial in reducing maintenance dredging requirements.
Design for Harbor Entrance Improvements, Wells Harbor, Maine. Hydraulic Model Investigation
R. R. Bottin (author)
1978
88 pages
Report
No indication
English
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