Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Arctic Ocean" wg kryterium: Temat


Wyświetlanie 1-13 z 13
Tytuł:
The integrated Arctic Ocean Observing System (iAOOS): an AOSB-CliC Observing Plan for the International Polar Year
Autorzy:
Dickson, B.
Powiązania:
https://bibliotekanauki.pl/articles/48790.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
climatic impact
International Polar Year
Arctic Ocean Observing System
Arctic Ocean
sea ice
climate change
Opis:
The debate on the climatic impact of Arctic change is currently focused on the fate of the perennial sea-ice and the climatic and social effects of its disappearance. Developments in our observing techniques mean that we are in prospect of being technically able to describe the ocean-atmosphere-cryosphere system of high northern latitudes operating as a complete system for the first time. Understanding this system and improving its predictability in models seems to be our most direct way of extending the ability of society to mitigate for or adapt to its changes, including global change. The integrated Arctic Ocean Observing System (iAOOS), described here, is a means of piecing together the available PIs, gear, ships and funding on the pan-Arctic scale that seems necessary to making the attempt, and the International Polar Year (2007–2009) provides the necessary stimulus for doing so.
Źródło:
Oceanologia; 2006, 48, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Warming of the West Spitsbergen current and sea ice North of Svalbard
Autorzy:
Piechura, J.
Walczowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/48817.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
sea ice
ocean circulation
Nordic Sea
climate change
atmospheric circulation
West Spitsbergen
Arctic Ocean
warming
Opis:
According to the results of recent research, besides the atmospheric circulation, it is heat transport to the Arctic Ocean (AO) by ocean currents, the West Spitsbergen Current (WSC) in particular, that is playing a significant role in the process of Arctic warming. Data collected by the Institute of Oceanology, Polish Academy of Sciences (IO PAS), in the Norwegian and Greenland Seas, and Fram Strait during the last 20 years reveal considerable changes in the amount of heat transported by the WSC into the Arctic Ocean. An increase in Atlantic Water (AW) temperature and the intensification of heat transport were observed in 2004–06; after this period, both parameters decreased. The aim of this study was to find out whether the fluctuations in heat input by the WSC have influenced the sea-ice distribution around Svalbard. In fact they do, but oceanic heat transport should nonetheless be regarded as just one of many processes influencing sea-ice behaviour.
Źródło:
Oceanologia; 2009, 51, 2; 147-164
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biodiversity of the Arctic Ocean in the face of climate change
Autorzy:
Weslawski, J.M.
Powiązania:
https://bibliotekanauki.pl/articles/11979.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biodiversity
Arctic Ocean
climate change
global climate change
Arctic sea
aquatic ecosystem
Arctic environment
sea water
water temperature
salinity level
Opis:
Global climate changes which has been observed over the recent years affects organisms occurring in the Arctic seas and the functioning of the whole maritime ecosystems there. The research note presents and briefly analyses the biological diversity of the Arctic Ocean and the most important factors which change the relations between organisms and the environment in the Arctic.
Źródło:
Papers on Global Change; 2011, 18
2300-8121
1730-802X
Pojawia się w:
Papers on Global Change
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monthly dynamics of carbon dioxide exchange across the sea surface of the Arctic Ocean in response to changes in gas transfer velocity and partial pressure of CO2 in 2010
Autorzy:
Wrobel, I.
Powiązania:
https://bibliotekanauki.pl/articles/48876.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
carbon dioxide
sea surface
Arctic Ocean
gas flux
global carbon budget
gas velocity
wind speed
Opis:
The Arctic Ocean (AO) is an important basin for global oceanic carbon dioxide (CO2) uptake, but the mechanisms controlling air—sea gas fluxes are not fully understood, especially over short and long timescales. The oceanic sink of CO2 is an important part of the global carbon budget. Previous studies have shown that in the AO differences in the partial pressure of CO2 (DpCO2) and gas transfer velocity (k) both contribute significantly to interannual air—sea CO2 flux variability, but that k is unimportant for multidecadal variability. This study combined Earth Observation (EO) data collected in 2010 with the in situ pCO2 dataset from Takahashi et al. (2009) (T09) using a recently developed software toolbox called FluxEngine to determine the importance of k and DpCO2 on CO2 budgets in two regions of the AO — the Greenland Sea (GS) and the Barents Sea (BS) with their continental margins. Results from the study indicate that the variability in wind speed and, hence, the gas transfer velocity, generally play a major role in determining the temporal variability of CO2 uptake, while variability in monthly DpCO2 plays a major role spatially, with some exceptions.
Źródło:
Oceanologia; 2017, 59, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Basen Oceanu Arktycznego i zmiany klimatu a rywalizacja wielkich mocarstw
Arctic Ocean, climate change and great powers rivalry
Autorzy:
Kociumbas, Kacper
Powiązania:
https://bibliotekanauki.pl/articles/1387035.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Geopolityczne
Tematy:
Arktyka
zmiany klimatu
geopolityka
Rosja
Chiny
Arctic
climate change
geopolitics
Russia
China
Arctic Ocean
climate changes
great powers rivalry
Opis:
Praca rozważa znaczenie Arktyki w obecnej rywalizacji Stanów Zjednoczonych Ameryki i Chin, a także rolę Rosji w tym konflikcie. Sytuacja geopolityczna Arktyki uwzględnia jej status prawny, istniejące tam zasoby, możliwość wykorzystania szlaków morskich w obliczu redukcji pokrywy lodowej, zwłaszcza Północnej Drogi Morskiej, a także znaczenie strategiczne wynikające z położenia między Ameryką Północną, Azją Wschodnią i Europą. Rola Federacji Rosyjskiej w obecnej rywalizacji między Stanami Zjednoczonymi a Chinami przedstawiona została w kontekście analizy porównawczej faktów i koncepcji geopolitycznych. Autor wskazał ponadto na analogie między obecnym konfliktem a wojnami napoleońskimi, z naciskiem na rolę Rosji na początku XIX stulecia. Mocarstwo to rozstrzygnęło wówczas rywalizację francusko-brytyjską na korzyść mocarstwa morskiego. Obecnie może ono również wpłynąć na losy konfliktu, udostępniając Chinom Północną Drogę Morską w przypadku ewentualnej blokady Morza Południowochińskiego przez marynarkę Stanów Zjednoczonych.
The paper examines the importance of the Arctic in the current US-China rivalry, as well as Russia's role in this conflict. The geopolitical situation of the Arctic takes into account its legal status, existing resources, the possibility of using sea routes in the circumstances of reducing the ice cover, especially the Northern Sea Route, as well as the strategic importance resulting from the location between North America, East Asia and Europe. The role of the Russian Federation in the current rivalry between the United States and China has been presented in the context of a comparative analysis of current events and geopolitical concepts. The author also pointed to the analogies between the present conflict and the Napoleonic wars, with an emphasis on the role of Russia in the early nineteenth century. This power then resolved the Franco-British rivalry in favor of the maritime power. At present, Russia can contribute to the resolution of the conflict by offering China the possibility of using the Northern Sea in the event of a possible blockade of the South China Sea by the US Navy.
Źródło:
Przegląd Geopolityczny; 2021, 35; 69-113
2080-8836
2392-067X
Pojawia się w:
Przegląd Geopolityczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An overview of the teta - S correlations in Fram Strait based on the MIZEX 84 data
Autorzy:
Schlichtholz, P.
Houssais, M.N.
Powiązania:
https://bibliotekanauki.pl/articles/47520.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
temperature
Fram Strait
Atlantic water
hydrographic cast
MIZEX 84 experiment
teta-S diagram
water mass
salinity
Arctic Ocean
Opis:
The water masses in Fram Strait have been analyzed on the basis of hydrographic casts taken in summer 1984 during the MIZEX 84 experiment. In particular, θ − S diagrams for 16 areas, each 5◦ in longitude and 1◦ in latitude, covering the strait from 77◦N to 81◦ N are used to characterize the water masses and discuss their possible origin. Near the surface, the East Greenland Polar Front clearly separates the lighter, cold and fresh Polar Water (PW) from the heavier, warm and saline Atlantic Water (AW). In the upper ocean, the data show a large spreading of the temperature maximum in the θ − S space associated with different modes of the AW recirculating southward below the PW. Two geographically distinct salinity minima are found in the intermediate layer below the AW. The denser one, in the Boreas Basin, is a feature typical of the Arctic Intermediate Water (AIW) formed by winter convection to the south of the strait, while the lighter one is sandwiched in the Arctic Ocean outflow between the AW layer and the Upper Polar Deep Water (UPDW) characterized by a downward salinity increase. In the deep layer, two salinity maxima are present. The shallower (and warmer) one, associated with the Canadian Basin Deep Water (CBDW), appears all along the East Greenland Slope. A similar but weaker maximum is also found in the southeastern part of the strait. This maximum is perhaps a remnant of the maximum in the East Greenland Current after it has been recirculated back to the strait around the cyclonic gyres of the Nordic Seas. The deeper one appears typically as a near-bottom salinity jump characteristic of the Eurasian Basin Deep Water (EBDW). The jump is found in two distinct areas of the strait, to the north-west in the Lena Trough and to the south-east in the rift valley of the Knipovich Ridge. The maximum in the former area should have been advected from the Arctic Ocean below the CBDW, while the maximum in the latter area might have originated from haline convection on the adjacent shelves. Some EBDW is trapped in the Molloy Deep over a denser water with salinity decreasing down to the bottom and temperature in the range of the Greenland Sea Deep Water (GSDW).
Źródło:
Oceanologia; 2002, 44, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crustal structure of the continent–ocean transition zone along two deep seismic transects in north-western Spitsbergen
Autorzy:
Czuba, Wojciech
Ritzmann, Oliver
Nishimura, Yuichi
Grad, Marek
Mjelde, Rolf
Guterch, Aleksander
Jokat, Wilfried
Powiązania:
https://bibliotekanauki.pl/articles/2052046.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
continent-ocean transition
seismic crustal structure
Źródło:
Polish Polar Research; 2004, 25, 3-4; 205-221
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of seafloor multiples observed in OBS data from the North Atlantic - new seismic tool for oceanography?
Autorzy:
Grad, Marek
Mjelde, Rolf
Czuba, Wojciech
Guterch, Aleksander
Schweitzer, Johannes
Ipy Project Group, -
Powiązania:
https://bibliotekanauki.pl/articles/2051512.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Atlantic Ocean
controlled source seismology
ocean bottom seis−mometers
wave propagation
seafloor multiples
Źródło:
Polish Polar Research; 2011, 4; 375-392
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface currents in the Porsanger fjord in northern Norway
Autorzy:
Stramska, Malgorzata
Jankowski, Andrzej
Cieszyńska, Agata
Powiązania:
https://bibliotekanauki.pl/articles/2046812.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
coastal processes
fjords
northern Norway
ocean observing systems
tides
Źródło:
Polish Polar Research; 2016, 37, 3; 337-360
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
O tak zwanych "trwałych typach pogody" w klimatach morskich europejskiej części atlantyckiego sektora Arktyki i Subarktyki w okresie 1961-1970
"Stable weather types" in ocean climates of the european part of the atlantic sector of the Arctic and Subarctic over the period 1961-1970
Autorzy:
Ferdynus, J.
Powiązania:
https://bibliotekanauki.pl/articles/260850.pdf
Data publikacji:
1998
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
Arktyka
Subarktyka
klimaty morskie
trwałe typy pogody
Arctic
Subarctic
stable types of weather
ocean climates
Opis:
Ocean climates of the Atlantic Sector of the Arctic and Subarctic are characterized by extremely large changeability of weather conditions appearing during a year and the subsequent years. The changeability in the annual structure of weather types is manifested by a large number of the observed weather types. In the analized stations a number af the observed weather types during a statistical year are changed from 214 at Jan Mayen to 175 af Bjőrnőya. Extremely large number of weather types are noted during the polar night (figure l) The analysis of figure l shows that in the chosen stations there appear periods in which the changeability is decreasing and the frequency of weather types is increasing. These types appear nearly every year in the same periods and their frequeney is signiticant "stable types of weather". These “stable types of weather" are observed from May to October (especially during the polar day). The weathers are characterized by large or total cloudiness, rainfall, and a slight wind speed, also there can be noted weathers with strong winds (table l). In the autumn-winter period due to the intensity of atmospheric circulation the stable weather are rarely observed. They differ from the stable weather types from the warm period. They are characterized by lack of cloudiness or moderate cloudiness (table l). Their origin is connected with the appearance of the settled and immobile anticyclone.
Źródło:
Problemy Klimatologii Polarnej; 1998, 8; 95-103
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Iceberg Melting and Climate Change in NW Atlantic Waters
Autorzy:
Perez-Gruszkiewicz, S.E.
Peterson, W.
Powiązania:
https://bibliotekanauki.pl/articles/117122.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Arctic shipping
climate change
Iceberg
Atlantic Ocean
NW Atlantic
iceberg melting
Labrador
International Ice Patrol (IIP)
Opis:
Climate change is predicted to cause increases in sea surface temperature (SST), as well as decreases in sea-ice cover, wind and current velocities. These changes will have a marked effect on iceberg melting in the shipping lanes off Newfoundland and Labrador, Canada. Icebergs that today can cross from northern Labrador to Newfoundland without melting will in the future have to be much larger to survive the transit. For example, icebergs at N Labrador in December of 2016 that are smaller than 156 m will melt before reaching 48N, but in year 2100 the length increases to 228 m. In addition, if future iceberg size distributions off Labrador are the same as today, icebergs will experience roughly 50% reductions in numbers in the NW Atlantic shipping lanes by year 2100. The increased melting rates are due to, in order of importance, increased sea-surface temperatures (responsible for 66% of the increase in the minimum transit size), decreasing current velocities (31%), and decreasing sea-ice cover (3%). Decreasing sea-ice tends to increase wave heights as well as accelerate the effects of wave erosion; however, for the areas studied the wave height is predicted to decrease moderately in year 2100, by a maximum of about 10% in December.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 3; 459-467
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Case Study from an Emergency Operation in the Arctic Seas
Autorzy:
Kvamstad, B.
Fjørtoft, K. E.
Bekkadal, F.
Marchenko, A. V.
Ervik, J. L.
Powiązania:
https://bibliotekanauki.pl/articles/116452.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Emergency Operation
Arctic Navigation
e-Navigation
Information and Data
communication
Ocean Data
Situation Awareness (SA)
SAR Resources
Opis:
The objective of this paper is to highlight the needs for improved access to high quality maritime data and information in the Arctic, and the need to develop maritime communication infrastructure with at least the same quality, in terms of availability and integrity, as in other more centralized areas. The foreseen Arctic ice meltdown is expected to provide new maritime transport corridors within relatively short time, and there is an urgent need to prepare for this, to ensure safe operations at sea and to protect the vulnerable Arctic environment. This paper points out some of these needs by presenting a case from a former accident in the Arctic sea. The case shows how the lack of proper information and data complicates the emergency operation. Some possible solutions to the challenges are proposed, and finally the paper briefly discusses the IMO e-Navigation concept in light of the Arctic challenges.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 2; 153-159
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Falsification of the Eulerian motions of lithospheric plates
Falsyfikacja eulerowskiego ruchu płyt litosfery
Autorzy:
Koziar, J.
Powiązania:
https://bibliotekanauki.pl/articles/2061765.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Morgan’s test
Indian Ocean triple junction
gaping gores
diffuse plate boundaries
plate tectonics absolute reference frames
Carey’s Arctic Paradox
sphenochasms
Earth expansion
test Morgana
połączenie potrójne Oceanu Indyjskiego
rozmyte granice płyt
absolutne układy odniesienia w tektonice płyt
paradoks arktyczny Careya
sfenochazm
ekspansja Ziemi
Opis:
Morgan (1968) tested the supposed Eulerian motion of lithospheric plates by calculation on a circuit around the Indian Ocean triple junction. The present analysis performed on a physical model shows that on a non-expanding Earth, the reconstructed Southwest Indian Ocean Ridge fails to close as it should according to the allegedly positive result of Morgan’s test, which is thereby shown to be in error. Wedge-shaped openings, appearing along all arms of the Indian Ocean triple junction during its reconstruction, are examples of Carey’s artifactual “gaping gores” which in general are one of the proofs of the Earth’s expansion. A global plan of plate motions based on the Eulerian principle is impossible and confirms Carey’s Arctic Paradox which is other proof of the expansion of the Earth. Space geodesy testing of expanding Earth is in fact testing of possible expansion of the plate tectonics model, not the real Earth. V-shaped openings between plates, when real, are not of Eulerian origin but are large sphenochasms in Carey’s sense caused by an expanding interior of the Earth.
Morgan (1968) sprawdzał zakładany eulerowski ruch płyt litosfery przez obliczenia wzdłuż obwodu potrójnego połączenia płyt w Oceanie Indyjskim. Z analizy przeprowadzonej przy użyciu fizycznego modelu wynika, że południowo-zachodni grzbiet Oceanu Indyjskiego powinien być konwergentny na nieekspandującej Ziemi i taki powinien być też w teście Morgana, którego wynik jest tym samym błędny. Klinowate rozwarcia pojawiające się na wszystkich ramionach połączenia potrójnego w Oceanie Indyjskim podczas jego rekonstrukcji są artefaktami nazwanymi przez Careya „gaping gores”. Są one jednym z dowodów ekspansji Ziemi. Globalny ruch płyt litosfery, oparty na zasadzie Eulera, jest niemożliwy i potwierdza Paradoks Arktyczny Careya, który jest kolejnym dowodem ekspansji Ziemi. Testowanie przez geodezję satelitarną ekspansji Ziemi jest w rzeczywistości testowaniem możliwej ekspansji modelu tektoniki płyt a nie realnej Ziemi. V-kształtne rozwarcia między płytami nie mają eulerowskiego charakteru, lecz są sfenochazmami Careya, powodowanymi ekspansją wnętrza Ziemi.
Źródło:
Biuletyn Państwowego Instytutu Geologicznego; 2016, 466; 147--178
0867-6143
Pojawia się w:
Biuletyn Państwowego Instytutu Geologicznego
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-13 z 13

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies