FN Archimer Export Format
PT J
TI A numerical model for ocean ultra-low frequency noise: Wave-generated acoustic-gravity and Rayleigh modes
BT 
AF ARDHUIN, Fabrice
   LAVANANT, Thibaut
   OBREBSKI, Mathias
   MARIE, Louis
   ROYER, Jean-Yves
   D'EU, Jean-Francois
   HOWE, Bruce M.
   LUKAS, Roger
   AUCAN, Jerome
AS 1:1;2:1;3:1;4:2;5:3;6:3;7:4;8:4;9:5;
FF 1:PDG-ODE-LOS;2:PDG-ODE-LPO;3:PDG-ODE-LOS;4:PDG-ODE-LPO;5:;6:;7:;8:;9:;
C1 IFREMER, Lab Oceanog Spatiale, Plouzane, France.
   UBO, IFREMER, Lab Phys Oceans, CNRS,IRD,UMR6523, Plouzane, France.
   CNRS, Domaines Ocean, Plouzane, France.
   Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Honolulu, HI USA.
   Lab Etud Geophys & Oceanog Spatiale, Toulouse, France.
C2 IFREMER, FRANCE
   UBO, FRANCE
   CNRS, FRANCE
   UNIV HAWAII, USA
   LEGOS, FRANCE
SI BREST
SE PDG-ODE-LOS
   PDG-ODE-LPO
   UBOIUEM
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
IF 1.555
TC 23
TU Centre national de la recherche scientifique
   Institut de recherche pour le développement
   Institut français de recherche pour l'exploitation de la mer
   Université de Bretagne Occidentale
UR https://archimer.ifremer.fr/doc/00176/28748/27211.pdf
LA English
DT Article
CR FROMVAR 2011
   VT 109 / OHA-SIS-BIO-1
   VT 112 / OHA-SIS-BIO-2
   VT 115 / OHA-SIS-BIO-3
   VT 119 / OHA-SIS-BIO-4
   VT 128 / OHA-SIS-BIO-5
BO Côtes De La Manche
   Marion Dufresne
AB The generation of ultra-low frequency acoustic noise (0.1 to 1 Hz) by the nonlinear interaction of ocean surface gravity waves is well established. More controversial are the quantitative theories that attempt to predict the recorded noise levels and their variability. Here a single theoretical framework is used to predict the noise level associated with propagating pseudo-Rayleigh modes and evanescent acoustic-gravity modes. The latter are dominant only within 200 m from the sea surface, in shallow or deep water. At depths larger than 500 m, the comparison of a numerical noise model with hydrophone records from two open-ocean sites near Hawaii and the Kerguelen islands reveal: (a) Deep ocean acoustic noise at frequencies 0.1 to 1 Hz is consistent with the Rayleigh wave theory, in which the presence of the ocean bottom amplifies the noise by 10 to 20 dB; (b) in agreement with previous results, the local maxima in the noise spectrum support the theoretical prediction for the vertical structure of acoustic modes; and (c) noise level and variability are well predicted for frequencies up to 0.4 Hz. Above 0.6 Hz, the model results are less accurate, probably due to the poor estimation of the directional properties of wind-waves with frequencies higher than 0.3 Hz.
PY 2013
PD OCT
SO Journal Of The Acoustical Society Of America
SN 0001-4966
PU Acoustical Soc Amer Amer Inst Physics
VL 134
IS 4
UT 000330119700074
BP 3242
EP 3259
DI 10.1121/1.4818840
ID 28748
ER

EF