FN Archimer Export Format PT J TI Coastal wave reflection, directional spread, and seismoacoustic noise sources BT AF ARDHUIN, Fabrice ROLAND, Aron AS 1:1;2:2; FF 1:PDG-ODE-LOS;2:; C1 IFREMER, Ctr Brest, Lab Oceanog Spatiale, F-29280 Plouzane, France. Tech Univ Darmstadt, Inst Hydraul & Water Resources Engn, Darmstadt, Germany. C2 IFREMER, FRANCE UNIV DARMSTADT, GERMANY SI BREST SE PDG-ODE-LOS IN WOS Ifremer jusqu'en 2018 copubli-europe IF 3.17 TC 47 UR https://archimer.ifremer.fr/doc/00088/19938/17604.pdf LA English DT Article AB Coastal reflection is introduced in a phase-averaged numerical wave model, first with a constant coefficient, and then with a reflection coefficient defined from the shoreface slope and that depends on the incident wave height and mean frequency. This parameterization is used in both regular and unstructured grids. The calibration involves a site-specific shoreface slope that is associated with the local geomorphology of the shoreline. Using wave buoy data off Hawaii and the U.S. West Coast, it is found that coastal reflection is necessary to reproduce observed directional properties of coastal sea states. Errors on the mean directional spread are reduced by up to 30% for the frequency band 0.04 to 0.30 Hz with, at most locations, very little impact on the mean direction and energy levels. The most accurate results are obtained using the parameterization based on the shoreface slope, provided that this slope is estimated accurately. These parameterizations are validated using seismic noise data. Using data from the U. S. West Coast it is shown that the reflection defined from the shoreface slope can improve the correlation between measured and modeled seismic noise. PY 2012 PD JUL SO Journal Of Geophysical Research-oceans SN 0148-0227 PU Amer Geophysical Union VL 117 IS C00J20 UT 000306002900004 DI 10.1029/2011JC007832 ID 19938 ER EF