RESEARCH OF CHANGES IN THE ICE COVER OF THE TATAR STRAIT BASED ON DATA OF REMOTE SENSING OF THE EARTH

https://doi.org/10.24057/2414-9179-2017-3-23-20-31

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About the Authors

I. V. Eremenko

Sakhalin State University
Russian Federation
Lenin st 290, Yuzhno-Sakhalinsk, 693000

D. V. Dorofeeva

RN-SakhalinNIPImorneft
Russian Federation
Amyrskaya st 53, Yuzhno-Sakhalinsk, 693000

V. A. Romanyuk

Sakhalin State University
Russian Federation
Lenin st 290, Yuzhno-Sakhalinsk, 693000

V. M. Pishchal’nik

Sakhalin State University
Russian Federation
Lenin st 290, Yuzhno-Sakhalinsk, 693000

Abstract

According to the data of satellite observations, the variability of the ice behavior of the whole Tatar Strait and its separate regions for the period of 1979–2016 has been researched. The tendency of decrease of the ice cover area both in the whole strait (10 %) and in its individual zones (up to 5 %) has been defined. The maximum ice extention in the water areas was observed in 1985, and the smallest ice season was recorded in 1991. In the annual course, the maximum ice cover in the Tatar Strait was observed in February (48 %). During the research period, the average duration of the ice season was reduced by 43 days. The main area of ice formation in the strait is its northern zone, which reflects the general dynamics of the ice extent of the strait. Due to the active destruction of ice in the stream of the Tsushima Flow, the area of the ice cover in the T-3 zone is minimal. Analysis of the anomalies of ice cover according to the climate norm of 1981–2010 allowed distinguishing the periods of prevalence of their positive (from 1979 to 2002) and negative (from 2003 to 2015) values. According to the completed winter typing by severity of ice conditions, the predominant types are middle types, and coincidence of winter types in all ice zones occurs simultaneously only in 24 % of cases. The type of winter in the southwestern and northern ice zones in most cases determines the severity of winter throughout the strait. Over the latest ten years extremely severe type of winter have persisted in the Tatar Strait, but the frequency of such winters has decreased noticeably.

Keywords

the Tatar Strait, ice cover, ice regime, winter typing, anomalies of ice cover.

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For citation: Eremenko I.V., Dorofeeva D.V., Romanyuk V.A., Pishchal’nik V.M. RESEARCH OF CHANGES IN THE ICE COVER OF THE TATAR STRAIT BASED ON DATA OF REMOTE SENSING OF THE EARTH. Proceedings of the International conference “InterCarto. InterGIS”. 2017;23(3):20-31. https://doi.org/10.24057/2414-9179-2017-3-23-20-31