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Atmospheric boundary layer measurements over sea ice in the Sea of Okhotsk
Shirasawa, K.; Aota, M. (1991). Atmospheric boundary layer measurements over sea ice in the Sea of Okhotsk, in: Nihoul, J.C.J. et al. Ice covered seas and ice edges. Physical, chemical and biological processes and interactions: proceedings of the 22th International Liège Colloquium on Ocean Hydrodynamics. Journal of Marine Systems, 2: pp. 63-79
In: Nihoul, J.C.J.; Djenidi, S. (1991). Ice covered seas and ice edges. Physical, chemical and biological processes and interactions: proceedings of the 22th International Liège Colloquium on Ocean Hydrodynamics. Journal of Marine Systems, 2. Elsevier Science Publishers: Amsterdam. 520 pp., more
In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Shirasawa, K.
  • Aota, M.

Abstract
    The southernmost part of the Sea of Okhotsk, along the northeastern sea coast of Hokkaido, Japan is usually covered with sea ice from early January through March. There are unstable ice packs, some of which consist of drift ice from the north, while others are locally frozen fast ice. This work reviews our knowledge on sea ice distributions and movements monitored by sea-ice radars and measurements of air-ice drag coefficients over sea ice in the coastal Sea of Okhotsk off Hokkaido.In addition, data from the marine tower standing 6.5 m deep in water and 600 off the shore have been analyzed by the eddy corrlation method to obtain wind stress and heat flux for three separate periods of pre-ice forming, ice forming and ice melt. Variations in drag coefficient and in heat flux coefficient of sea ice and water are shown as a function off wind speed, stability and the surface condition of sea ice. Moreover, surface roughness expressed by backscatter signals from a X-band radar is compared to the micrometeorological roughness, i.e., the air-ice drag coefficient.

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