@article{PAR00015070,
  title = {{O}cean bottom pressure records from the {C}ascadia array and short surface gravity waves},
  author = {{P}eureux, {C}. and {A}rdhuin, {F}abrice},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he ocean bottom pressure records from eight stations of the {C}ascadia array are used to investigate the properties of short surface gravity waves with frequencies ranging from 0.2 to 5 {H}z. {I}t is found that the pressure spectrum at all sites is a well-defined function of the wind speed {U}-10 and frequency f, with only a minor shift of a few d{B} from one site to another that can be attributed to variations in bottom properties. {T}his observation can be combined with the theoretical prediction that the ocean bottom pressure spectrum is proportional to the surface gravity wave spectrum {E}(f) squared, times the overlap integral {I}(f) which is given by the directional wave spectrum at each frequency. {T}his combination, using {E}(f) estimated from modeled spectra or parametric spectra, yields an overlap integral {I}(f) that is a function of the local wave age f/f({PM})=f{U}(10)/0.13 g. {T}his function is maximum for f/f({PM}) = 8 and decreases by 10 d{B} for f/f({PM}) = 2 and f=f/({PM}) = 30. {T}his shape of {I}(f) can be interpreted as a maximum width of the directional wave spectrum at f/f({PM}) = 8, possibly equivalent to an isotropic directional spectrum, and a narrower directional distribution toward both the dominant low frequencies and the higher capillary-gravity wave frequencies.},
  keywords = {},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {O}ceans},
  volume = {121},
  numero = {5},
  pages = {2862--2873},
  ISSN = {2169-9275},
  year = {2016},
  DOI = {10.1002/2015jc011580},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00015070},
}