Zjawiska lodowe na Zatoce Admiralicji w roku 1999 (Wyspa Króla Jerzego, Szetlandy Południowe)

• Autorzy: Zblewski S.

Warianty tytułu

EN

Ice phenomena in the Admiralty Bay in 1999 (King George Island, South Shetland Islands)

• Języki publikacji: PL

Abstrakty

EN

In 1999 hydrometeorological observations were carried out at H. Arctowski Station. Ice phenomena in the Admiralty Bay and in the visible neighbouring area of the Bransfield Strait were, among others, the subject of these observations. The Admiralty Bay is a typical fjord and is the biggest bay in the Southern Shetlands archipelago, covering 122.08 km2. Winter ice cover formation of this area varies in different years. Once every 4-5 years the waters of the Bay do not freeze and the ice observed there originates from the Bransfield Strait. During the whole year glacial ice (brash ice, growlers, bergy bits and icebergs) originating from local sources and from other sea areas can be observed in the Admiralty Bay. In 1999 the process of the ice cover formation was characterised by variability both in time and space. During the observational period floating ice formed ice fields of different shapes and concentration. Brash ice and growlers often covered the weatter shore during high tidal waters. The icebergs in the said period are mainly observed at the entrance of the Bay (in the region of the Syrezol Rocks) less frequently inside the Bay. They usually drifted in the axial part of the Bay hardly ever reaching its central part. The autochthonous sea ice formed only near the shore and during the whole year it was the inflowing ice which was predominant. First forms of new ice in the waters of the Admiralty Bay occurred in the second decade of June. These forms were initial stage forms (frazil ice and grease ice) which never changed into more advanced form of sea ice. At the end of June the process of ice inflow from the Bransfield Strait started. The allochthonous ice reached mainly the axial and central parts of the Bay, however there were few cases noted in which the ice reached the auxiliary bays. The observations showed that the character of the main features of the winter sea ice cover of the Admiralty Bay was predominantly influenced by wind and ice conditions of the Bransfield Strait. In 1999 the Admiralty Bay was not covered by consolidated ice but by drifting ice which changed its position and edge very quickly. The course of ice phenomena in winter season 1999 had a mild character and according to Kruszewski's categories (1999) defining the ice conditions in the Admiralty Bay may be classed as number one.

Słowa kluczowe

PL

zjawiska lodowe; Zatoka Admiralicji; Wyspa Króla Jerzego; Szetlandy Południowe

EN

ice phenomena; Admiralty Bay; King George Island; South Shetland Islands

• Wydawca: Stowarzyszenie Klimatologów Polskich
• Czasopismo: Problemy Klimatologii Polarnej
• Rocznik: 2001
• Tom: nr 11
• Strony: 113--120
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Zblewski S.

• Katedra Meteorologii i Oceanografii Nautycznej, Wydział Nawigacyjny WSM w Gdyni,