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“The Impacts of the Construction of the Pillar Point Harbor Breakwaters on the Half Moon Bay Shoreline, San Mateo County, California” by Gary B. Griggs of University of California Santa Cruz

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ARTICLE. From the Multidisciplinary Digital Publishing Institute (MDPI) and the Department of Earth and Planetary Sciences, Institute of Marine Sciences, University of California Santa Cruz, Santa Cruz, CA 95064, USA.

Browse (Amazing Historical) Photos and Diagrams

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Half Moon Bay in 1956 prior to breakwater construction, showing the smooth log-spiral or hook-shaped nature of its shape. Note refracted wave fronts are essentially parallel to the shoreline.
Examples of partially or fully developed hook-shaped bays along California’s coast. Clockwise from upper left: Stinson Beach; Pt. Reyes and Drakes Beach; Pt Loma and the Silver Strand, San Diego; Bodega Head and Bodega Bay.
The destruction of Mirada Road (a) and a sewage transmission line (b) immediately downcoast of the end of the Pillar Point breakwater (1976)

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