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Tytuł:
Zielona Antarktyda - zmiany klimatu i szaty roślinnej Antarktydy podczas kredy i kenozoiku
Autorzy:
Tomczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/856336.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Tematy:
Antarktyda
warunki klimatyczne
szata roslinna
mezozoik
kreda
kenozoik
zmiany klimatyczne
Źródło:
Wszechświat; 2016, 117, 07-09
0043-9592
Pojawia się w:
Wszechświat
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wiatry huraganowe w 2008 roku w Zatoce Admiralicji, Wyspa Króla Jerzego, Antarktyda Zachodnia
Hurricane winds during 2008 year in Admiralty Bay, King George Island, West Antarctica
Autorzy:
Wierzbicki, G.
Powiązania:
https://bibliotekanauki.pl/articles/887060.pdf
Data publikacji:
2009
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
Antarktyda Zachodnia
Zatoka Admiralicji
huragany
rok 2008
wiatry
wyspa Krola Jerzego
cyrkulacja atmosferyczna
Opis:
Meteorological data collected by the author at Arctowski station from March to December 2008 revealed 72 days with hurricane winds in the Admiralty Bay. The results were compared with synoptic maps, wind data from Ferraz station and older data from Arctowski station. Winds in September 2008 reached the highest velocities (mean 32.0 m·s–1, gusts 80 m·s–1) ever measured in Admiralty Bay. 49% events of hurricane winds occurred while cold fronts were passing. Topography of King George Island affects winds distribution inside the bay. Hurricane winds accelerate ablation of glaciers on King George Island and cause serious problems for fi eldwork and maintaining of research stations in Antarctica.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2009, 18, 2[44]
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przebieg roczny temperatury powietrza na Antarktydzie
Annual course of air temperature on the Antarctic
Autorzy:
Kejna, M.
Powiązania:
https://bibliotekanauki.pl/articles/260895.pdf
Data publikacji:
2002
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
Antarktyda
temperatury powietrza
Antarctic
air temperature
Opis:
On the Antarctic the annual course of air temperature shows a considerable spatial differentiation. Over the inland the course of temperature during the year is conditioned by insolation-radiational factors. On the coast the role of circulation factors connected with the advection of air masses from above the ocean or from the interior of the continent. In the paper mean monthly air temperatures from 56 stations making standard meteorological observations and from 38 automatic weather stations (AWS) have been used. On the Antarctic there types of annual air temperature courses can be distinguished: Oceanic - characterised by positive air temperatures in the summer season with the highest temperatures in February and by mild temperatures in the winter months (to -10°C). As a result of the ocean influence spring is considerable colder then autumn. The annual amplitudes are small (to 10-15°C). This type occurs on the western coast of the Antarctic Peninsula and on the subantarctic islands. Continental - with very low air temperatures. The warmest month is December with temperatures below -30°C in the interior of the continent. In winter the lowest mean monthly temperatures reach -70°C. The temperature frequently increases in the middle of winter; this phenomenon is called kernlose winter. The annual amplitude of air temperature is not high and in the interior its value reaches 30-35°C. The continental type includes the whole Antarctic except the narrow coastal belt. Coastal - characterised by air temperature around 0°C in the summer period. The warmest month is January. The lowest temperatures occur in January (-30° do -40°C). The growth of temperature in spring delays the heat uptake for the melting of sea ice. The annual amplitude of the air temperature is quite high and exceeds 20°C. Due to the influence of circulation factors on the Antarctic the annual course of the air temperature shows a large variability from year to year.
Źródło:
Problemy Klimatologii Polarnej; 2002, 12; 5-19
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An enigmatic theropod Cryolophosaurus: reviews and comments on its paleobiology
Autorzy:
Yun, Changyu
Powiązania:
https://bibliotekanauki.pl/articles/2060953.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Cryolophosaurus
dinosauria
theropoda
ecology
Antarctica
kriolofozaur
dinozaury
teropod
ekologia
Antarktyda
Opis:
Cryolophosaurus is a genus of theropod dinosaur that is characterized by its distinctive crest formed by dorsally expanded lacrimals. Although its fossils are rare, currently recognized materials suggest this taxon was the largest predator in the Early Jurassic times in Antarctica, indicating it was the apex predator in its ecosystem. The skeleton of Cryolophosaurus bears both advanced and basal characteristics of theropods, making its position within theropod phylogenetic tree controversial. Its unusual anatomical features, size, and the habitat located close to the Jurassic polar circle all differ from other Early Jurassic theropods, indicating it was one of the most ecologically significant taxon of all theropods.
Źródło:
Volumina Jurassica; 2019, 17, 1; 103--110
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Amplituda dobowa temperatury powietrza na Antarktydzie
Diurnal air temperature range on the Antarctic
Autorzy:
Kejna, M.
Powiązania:
https://bibliotekanauki.pl/articles/260832.pdf
Data publikacji:
2004
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
temperatury powietrza
Antarktyda
cyrkulacja atmosferyczna
air temperature
Antarctic
atmospheric circulation
Opis:
Diurnal air temperature ranges (DTR) have been counted based on the monthly mean values of the daily maximal and minimal air temperature from 23 Antarctic stations. DTR shows a considerable spatial differentiation on the Antarctic. The lowest DTR values (4-6°C) occur along the western coast of the Antarctic Peninsula and on the subantarctic islands. At the remaining coast of Antarctica the mean DTR vary from 6-7°C to 10°C at the stations situated on higher geographical latitude. In the Antarctic inlands the largest DTR values occur at the highest parts of glacier plateau (8-9°C), while on the South Pole they are distinctly smaller (6°C). In the annual course of DTR the following types have been distinguished: oceanic type at the western coast of the Antarctic Peninsula with small DTR in summer (2-4°C) and twice higher in winter; oceanic-continental type at the coast of Eastern Antarctic with large DTR during the whole year; continental-oceanic type with high DTR in summer and still higher (up to 13°C) in winter occurring at Western Antarctic and in the Weddell Sea basin; continental type characteristic for the interior of the continent with the highest DTR in summer (11-12°C) and smaller in winter; polar type with small DTR in summer (to 3°C) and considerable higher in winter (7-8°C). A decrease of DTR occurred on the Antarctic in regions characterized by increasing temperature in the second half of the 20th century, especially on the western coast of the Antarctic Peninsula, on the coast of Ross Sea and on the Queen Maud Land. The decrease in the DTR values was connected with the quicker increase of daily minimal air temperatures. On the other hand, in the regions where cooling was noted the DTR values increase (inlands of Eastern Antarctic and South Pole, and the Weddell Sea basin), mainly due to the fall in daily minimal air temperatures.
Źródło:
Problemy Klimatologii Polarnej; 2004, 14; 7-18
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przebieg roczny ciśnienia atmosferycznego na Antarktydzie
Annual course of the atmospheric pressure on the Antarctic
Autorzy:
Kejna, M.
Powiązania:
https://bibliotekanauki.pl/articles/260645.pdf
Data publikacji:
2005
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
ciśnienie atmosferyczne
Antarktyda
cyrkulacja atmosferyczna
Antarctic
atmospheric pressure
atmospheric circulation
Opis:
W artykule przedstawiono zmienność przestrzenną przebiegu rocznego ciśnienia atmosferycznego na Antarktydzie. Stwierdzono dwa typy przebiegów rocznych ciśnienia. Na wybrzeżu występuje przebieg charaktery-zujący się półroczną oscylacją, z maksymalnymi wartościami w sezonie letnim i zimowym oraz najniższymi w przejścio-wych porach roku. We wnętrzu kontynentu najwyższe ciśnienie występuje latem, a najniższe w chłodnej połowie roku. Największe amplitudy roczne ciśnienia występują we wnętrzu kontynentu. W ostatnich dwóch dekadach XX wieku zaznaczyły się istotne zmiany w przebiegu rocznym ciśnienia atmosferycznego.
At the polar latitudes of the Southern Hemisphere a circulation cell functions which is connected with the strong baric wedge feature of the atmosphere occurring between the Antarctic anticyclone and a very deep circumpolar trough by the Antarctic coastline. The circulation system in the Antarctic region shows seasonal variability called Southern Annular Mode (SAM). In the cold season the tropospheric exchange of air masses strengthens due to the increase of the katabatic winds? speed. The relocation of air masses from over Antarctica to its peripheries has an influence on the annual course of the atmospheric pressure. In the elaboration mean monthly air pressure values were taken into account from 106 Antarctic stations from the beginning of measurements to 2000. On the basis of these data the mean annual course of the atmospheric pressure has been counted as well as the yearly pressure range. Annual courses from two periods: 1958-1980 and 1981-2000 were also compared. Over the Antarctic the annual course of the atmospheric pressure is complex. At the costal part of the continent there are two maxima (in summer and in winter) and two minima in the transient seasons. This course is called semi-annual oscillation (SAO) in the literature. However this phenomenon shows certain regional specifics. On the Antarctic Peninsula and South Orkney Islands the winter maximum is more distinct, while minima are shifted to February and November. In the inland the winter maximum decreases with the distance from the coast and at stations situated in the highest parts of the glacial plateau the highest pressure values occur in summer and distinctly lower ones in winter. At some inland stations a slight increase of the pressure can be observed in the middle of winter what refers to the thermal coreless winters occurring frequently in this region. The annual range of the atmospheric pressure decreases from the coast (15-7 hPa) to the interior of the continent, where it reaches values above 20 hPa. During the last two decades of the 20th century significant changes took place in the annual courses of the pressure in comparison to the years 1958-1980. On the South Orkney Islands and the Antarctic Peninsula the pressure increased in summer and in autumn, while in winter distinctly decreased. At the remaining part of the Antarctic coast pressure decrease occurred in every seasons, and in the Weddell Sea region the autumn and spring minimum significantly deepened. At the majority of the stations the annual amplitudes of the atmospheric pressure decreased after 1980. These changes contributed to the disturbances in the functioning of the Antarctic climate system. On the Antarctic Peninsula the air temperature increased, while at many stations in the Eastern Antarctic considerable cooling occurred.
Źródło:
Problemy Klimatologii Polarnej; 2005, 15; 7-16
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operation of seagoing cruise ships in polar waters of the Antarctica
Autorzy:
Wolski, A.
Powiązania:
https://bibliotekanauki.pl/articles/198277.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
safety of navigation
maritime tourism
Polar Code
Antarctica
bezpieczeństwo nawigacji
turystyka morska
Kod Polarny
Antarktyda
Opis:
As maritime tourism has been developing dynamically in recent years, including cruises into polar areas, the author attempts to identify factors essential for the safety of navigation in those sea areas, with a specific focus on the waters of the Antarctica. The presented methods of navigation take account of hazards that are typical in polar waters. All the considerations are based on the guidelines of the Polar Code.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2017, 96; 215-219
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
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