Open AccessAttenuation of gravity waves in fast ice
Author(s) -
B. V. Levin,
P. D. Kovalev,
D. P. Kovalev,
K. V. Kirillov
Publication year - 2019
Publication title -
doklady akademii nauk. rossijskaâ akademiâ nauk
Language(s) - English
Resource type - Journals
ISSN - 0869-5652
DOI - 10.31857/s0869-56524844482-486
Subject(s) - attenuation , amplitude , wavelength , dispersion relation , sea ice , gravity wave , dispersion (optics) , geology , wave propagation , gravitational wave , longitudinal wave , geophysics , physics , mechanics , atmospheric sciences , optics , climatology , astrophysics
The attenuation coefficients of sea waves in ice in the coastal zone of the Sea of Okhotsk with periods from 4 to 30 s were estimated as a function of their wavelength based on observations. We used the model dispersion relation for these waves in ice and calculated the theoretical attenuation coefficients. We compared them with those from the data of experiments based on the relation of the spectral energies of waves in ice-free water and in ice. It is possible to use the estimated attenuation coefficients for waves of different periods to calculate the distance of wave propagation in fast ice with the critical amplitude where ice breaking is possible.