Permalink :  http://hdl.handle.net/2115/91849

JaLCDOI :  10.14943/lowtemsci.82.25

KEYWORDS : オホーツク海の海氷; 季節海氷域; 海氷の物理的性質; 海氷の生物地球化学; Sea ice in the Sea of Okhotsk; Seasonal ice zone; Physical properties of sea ice; Sea ice biogeochemistry

Drifting ice in the Sea of Okhotsk is known widely as one of the winter scenic features in Hokkaido, and the observational history near the coast spans over 130 years. However, it can be said that it is since the cooperative observations with PV “Soya” between Japan Coast Guard and Hokkaido University started in 1996 that the real situation about sea ice growth and melting has been revealed. Since then, the observations have been continued for 28 years except for 2021 when it was canceled due to the COVID-19. Through the analysis of surface heat budget, inner structure of sea ice, floe size distribution and whatever, the various characteristics of sea ice have been elucidated step by step. Recently our focuses are extended to the roles of sea ice in biogeochemistry. In this article, looking back over the past observations, we briefly describe how they contributed to the knowledge of the sea ice in this region and also in the polar regions, and consider the future prospects.

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