Based on the wave velocity potential of sea water and marginal sea ice, a modified formula about damped traveling wave is proposed. From this formula, it is obvious that the propagation characteristics of ocean wave i...Based on the wave velocity potential of sea water and marginal sea ice, a modified formula about damped traveling wave is proposed. From this formula, it is obvious that the propagation characteristics of ocean wave in marginal sea ice are affected by ice thickness, temperature, salinity and ice growth rate. Attenuation coefficient approaches a limit value of 0.99 when ice thickness increases in the range of 0.5-50 m. When ice temperature increases in the range from 18 ℃ to 3 ℃, attenuation coeffi- cient slowly decreases, while it rapidly decreases when ice temperatures is above a critical ice temperature of 3 ℃. Both attenuation coefficient and wavelengths of damped traveling wave nearly increase linearly with the increase of ice salinity and ice growth rate.展开更多
基金Supported by the National Natural Science Foundation of China(41276187the Global Change Research Program of China(2015CB953901)+2 种基金the Startup Foundation for Introducing Talent of NUIST(20110310)Program for Innovation Research and Entrepreneurship Team in Jiangsu Provincethe CFOSAT Project and the Canadian Program on Energy Research and Development
文摘Based on the wave velocity potential of sea water and marginal sea ice, a modified formula about damped traveling wave is proposed. From this formula, it is obvious that the propagation characteristics of ocean wave in marginal sea ice are affected by ice thickness, temperature, salinity and ice growth rate. Attenuation coefficient approaches a limit value of 0.99 when ice thickness increases in the range of 0.5-50 m. When ice temperature increases in the range from 18 ℃ to 3 ℃, attenuation coeffi- cient slowly decreases, while it rapidly decreases when ice temperatures is above a critical ice temperature of 3 ℃. Both attenuation coefficient and wavelengths of damped traveling wave nearly increase linearly with the increase of ice salinity and ice growth rate.
