Многолетние изменения ледовитости в районе архипелагов Шпицберген и Земля Франца-Иосифа

Translated title of the contribution: Long-term changes in ice coverage in the area of the Svalbard (Spitsbergen) and Franz Josef Land archipelagos

Б.С. Шапкин, А.В. Рубченя, Б.В. Иванов, А.Д. Ревина, М.В. Богрянцев

Research output: Contribution to journalArticlepeer-review

1 Scopus citations
4 Downloads (Pure)

Abstract

A comparative analysis of inter‑annual changes in ice coverage and time scales of its variability in the waters sur‑ rounding the Svalbard and Franz Josef Land archipelagos has been performed. The analysis was carried out for the selected quasi‑homogeneous regions. Open sources of information (satellite observations) collected by the Arctic and Antarctic Research Institute were used. Seasonal and inter‑annual changes in ice coverage were stud‑ ied over the period 1979–2019, since the uniform series of the satellite data were available for this period. The change of a relatively stable type of ice regime to a regime with a high level of inter‑annual variability, which occurred in 2004–2006, was established. A significant negative trend in the change in ice coverage, character‑ istic of the waters surrounding both archipelagos, was revealed. Correlation and spectral analyses were used to estimate possible periods of cyclic fluctuations in ice coverage (taking into account the limited duration of the observation series), which amounted about 5–6 years. An efforts were made to establish possible relationships between the ice coverage fluctuations and the main atmospheric and oceanic indices. Essentially, no statistical connection with the main atmospheric indices (Arctic and North Atlantic Oscillations) was found, but the feed‑ back with the Atlantic Multi‑decadal Oscillation index had been established. The maximum correlation coeffi‑ cients for Spitsbergen are observed in the winter season, while in the area of Franz‑Joseph Land this takes place in summer, which may be attributed to the final velocity of the Atlantic Multidecadal Oscillation signal.

Translated title of the contributionLong-term changes in ice coverage in the area of the Svalbard (Spitsbergen) and Franz Josef Land archipelagos
Original languageRussian
Pages (from-to)128-136
Number of pages9
JournalЛед и Снег
Volume61
Issue number1
DOIs
StatePublished - 2021

Scopus subject areas

  • Global and Planetary Change
  • Water Science and Technology
  • Geochemistry and Petrology
  • Earth-Surface Processes

Keywords

  • changes in ice coverage
  • variability
  • Ice conditions
  • ice extent
  • Franz Joseph Land
  • Spitsbergen

Fingerprint

Dive into the research topics of 'Long-term changes in ice coverage in the area of the Svalbard (Spitsbergen) and Franz Josef Land archipelagos'. Together they form a unique fingerprint.

Cite this