VARIABILITY ANALYSIS OF THE CENTURIAL ICE COVER SERIES OF TATAR STRAIT ON THE BASIS OF SATELLITE AND HYDROMETEOROLOGICAL OBSERVATIONS USING GIS TECHNOLOGIES

http://doi.org/10.24057/2414-9179-2018-2-24-46-54

View or download the article (Rus)

About the Authors

Daria V. Dorofeeva

RN-SakhalinNIPImorneft,
ul. Amyrskaya 53, Yuzhno-Sakhalinsk, 693000, Russia,
E-mail: x-397-y@mail.ru

Vladimir M. Pishchalnik

Sakhalin State University,
ul. Lenina 290, Yuzhno-Sakhalinsk, 693000, Russia,
E-mail: vpishchalnik@rambler.ru

Igor G. Minervin

Sakhalin State University,
ul. Lenina 290, Yuzhno-Sakhalinsk, 693000, Russia,
E-mail: igor@minervin.ru

Daria A. Pastyhova

Sakhalin State University,
ul. Lenina 290, Yuzhno-Sakhalinsk, 693000, Russia,
E-mail: darya.pastuhova97@gmail.com

Ilya V. Shumilov

Sakhalin State University,
ul. Lenina 290, Yuzhno-Sakhalinsk, 693000, Russia,
E-mail: ilyarolevik1@yandex.ru

Abstract

In this article, series of inter-annual variability of the ice cover of the Tatar Strait were reconstructed and formed for the period from 1882 to 2017. The source of information for constructing the series was based on historical air temperature data from the coastal hydrometeorological stations (1882–2017) and observations of the ice cover: marine from 1929 to 1960; aviation from 1955 to 1992 and satellite from 1971 to 2017. The smoothing of the reconstructed series was performed by the Kaiser-Bessel method and long-period fluctuations of ice cover with duration from 7 to 25 years are marked. Trends of the dynamics of inter-annual changes of the ice cover of the Tatar Strait were obtained by the method of least squares. The rate of increase in ice cover in positive trends ranges from 4.5 to 8.9 % over 10 years, decrease in ice cover in negative trends ranges from 12.3 to 5.8 %. With the help of linear approximation, defined existence of general unidirectional trend of decreasing of ice cover by 6.7 % over the past 135 years with an average rate of decreasing of 0.5 % for every 10 years was established. The classification of winter types by the severity of ice conditions was made according to the ice cover area data. The period from 1985 to 1994 was characterized by the greatest frequency of soft winters, and the period from 1920 to 1944 was distinguished by the most severe ice conditions in the investigated centurial series. It was established that, beginning in 1985, synchronous fluctuations in the variation of ice cover have been occurring in the water areas of the Tatar Strait and the Sea of Okhotsk.

Keywords

Tatar Strait, long-term changes of ice cover, tendency, trends, typification of winters by the severity of ice conditions.

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For citation: Dorofeeva D.V., Pishchalnik V.M., Minervin I.G., Pastyhova D.A., Shumilov I.V. VARIABILITY ANALYSIS OF THE CENTURIAL ICE COVER SERIES OF TATAR STRAIT ON THE BASIS OF SATELLITE AND HYDROMETEOROLOGICAL OBSERVATIONS USING GIS TECHNOLOGIES Proceedings of the International conference “InterCarto. InterGIS”. 2018;24(2):46–54 http://doi.org/10.24057/2414-9179-2018-2-24-46-54