Table of Contents
J. Mar. Sci. Eng., Volume 6, Issue 4 (December 2018)
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Cover Story (view full-size image) A floating bridge across the mouth of the narrow fjord-like waterbody of Hood Canal, Washington [...] Read more. A floating bridge across the mouth of the narrow fjord-like waterbody of Hood Canal, Washington impacts water quality parameters and creates a migration barrier for surface-oriented fish species. The bridge floats on concrete pontoons, which span 85% of the width of the canal and extend several meters into the water column. Three-dimensional hydrodynamic models of Hood Canal, validated by an intensive field data collection program, show that the pontoons obstruct the brackish outflow surface layer, causing increased local mixing and up-current pooling/down-current sheltering during ebb and flood tidal exchange. This physical obstruction within the upper water column alters temperature, salinity, and current velocity near the bridge. The cover image shows the Hood Canal Bridge infrastructure within the waterbody and demonstrates the pooling/sheltering effects of the physical barrier. View this paper.