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Effects of Proposed Sediment Borrow Pits on Nearshore Wave Climate and Longshore Sediment Transport Rate Along Breton Island, Louisiana

Citation | List of Figures | List of Tables | Conversion Factors | Abbreviations | Abstract | Introduction | Methods | Results | Conclusions | Acknowledgments | References Cited | Appendix 1. Scenarios | Appendix 2. Example Model Input Files | Appendix 3. File Naming Convention

Table 2. Comparison of the Simulating WAves Nearshore (SWAN) model output from grids G1 and G2 to WavewatchIII® model output evaluated against observed buoy data from the representative time step of each scenario. Operational WavewatchIII® does not archive mean direction, so this variable cannot be assessed. [m, meters; R2, coefficient of determination; RMSE, root-mean square error; s, seconds; --, indicates no error calculated for buoy observations ]

    Significant wave height (m) Peak wave period(s) Mean wave direction (degree)
Buoy Depth (m) Mean Bias RMSE R2 Mean Bias RMSE R2 Mean Bias RMSE R2
Observed
42040 164.6 2.46 -- -- -- 6.92 -- -- -- 134.4 -- -- --
42012 27.7 1.1 -- -- -- 5.77 -- -- -- 189.5 -- -- --
42007 14.9 1.46 -- -- -- 5.88 -- -- -- 117.6 -- -- --
WaveWatch III ®
42040 164.6 2.36 -0.1 0.42 0.96 6.15 -0.77 0.85 0.87 -- -- -- --
42012 27.7 0.77 -0.33 0.44 0.05 5.1 -0.67 1.51 0.02 -- -- -- --
42007 14.9 0.48 -0.98 0.31 0.01 4.12 -1.77 1.46 0.05 -- -- -- --
SWAN G1
42040 164.6 2.36 -0.11 0.52 0.95 6.25 -0.67 0.98 0.83 119.8 5 27.43 0.93
42012 27.7 0.97 -0.13 0.25 0.87 5.42 -0.35 1.15 0.64 216.3 11.87 44.85 0.72
42007 14.9 1.21 -0.25 0.24 0.93 5.37 -0.52 0.83 0.88 84.49 16.41 38.66 0.87
SWAN G2
42012 27.7 0.95 -0.15 0.25 0.87 5.37 -0.4 1.15 0.64 216.4 11.37 45.14 0.72
42007 14.9 1.18 -0.29 0.25 0.92 5.28 -0.6 0.87 0.87 86.32 15.99 38.08 0.87

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