scholarly journals Analysis and Research on Cold Proof Design of Polar Marine Machinery

2021 ◽  
Vol 2125 (1) ◽  
pp. 012060
Author(s):  
Li Yu ◽  
Wenyong Guo ◽  
Xinglong Pan ◽  
Hantao Chen
Keyword(s):  
Arctic Region ◽  
Electric Heating ◽  
The Arctic ◽  
Polar Regions ◽  
Constant Heat ◽  
Key Technology ◽  
Strategic Position ◽  
Electric Heat ◽  
Energy Exploitation ◽  
The Arctic Region

Abstract Polar marine machinery is an important equipment for China to participate in Arctic energy exploitation. The Arctic region is rich in natural resources and has a very important strategic position. As an important equipment for passage and exploitation of energy, its key technology is particularly important. As a special ship sailing in polar regions, polar ships generally adopt electric heat tracing measures due to the adverse environment in polar regions. The deck machinery and facilities shall be protected against cold. This paper mainly studies the convection of flat plate members under constant heat flow electric heating. The research results can be popularized and applied to the cold protection of most upper facilities of polar ships.

scholarly journals Sources: Antarctica and the Arctic Circle: A Geographic Encyclopedia of the Earth's Polar Regions

2015 ◽  
Vol 54 (4) ◽  
pp. 79
Author(s):  
Lisa Euster
Keyword(s):  
Social Sciences ◽  
Applied Sciences ◽  
Large Range ◽  
Arctic Region ◽  
Natural Sciences ◽  
The Arctic ◽  
Central Feature ◽  
Polar Regions ◽  
Vast Area ◽  
The Arctic Region

Although calling itself a geographic encyclopedia, the scope of this two-volume set is broader than such a designation suggests. Hund has attempted to encompass a large range of information about a vast area, perhaps a bit much for a modest two-volume set. Attempting to address in a meaningful way topics in the humanities, social sciences, natural sciences, and applied sciences for both poles in approximately 350 entries and fewer than 800 pages is ambitious. His stated "central feature . . . the original inhabitants of the Arctic region" (xi) would, alone, merit a work of this size. John Stewart's larger, two-volume Antarctica: An Encyclopedia, 2nd ed. (McFarland, 2011) is more limited in both geographical and topical scope.

NAVIGATION SHARING PROSPECTS GLONASS AND PSEUDOLITES FIELDS FOR NAVIGATION AND LANDING OF AIRCRAFT IN ARCTIC

2018 ◽  
pp. 13-17
Author(s):  
V. I. Baburov ◽  
N. V. Vasileva ◽  
N. V. Ivantsevich
Keyword(s):  
Arctic Region ◽  
Signal Propagation ◽  
Simulation Modelling ◽  
Limited Range ◽  
Propagation Path ◽  
The Arctic ◽  
Polar Regions ◽  
Navigation Systems ◽  
Arctic Conditions ◽  
The Arctic Region

In view of the development of the Arctic Region the problem of aircraft (AC) navigation support under arctic conditions throughout the flight, including the landing stage, acquires special momentum. Given that land-based navigation systems have a limited range which does not cover the Arctic Region and are significantly inferior to satellite radio navigation systems (SRNS), SRNS user navigation equipment (UNE) becomes extremely important for AC navigation and landing. The functioning of SRNS UNE in the polar regions is determined by the characteristics of the satellite signal propagation path under arctic conditions and considerable radio signal reflection from the underlying surface. Multipath errors are of special significance for low satellite elevations. If low satellites are excluded from processing by UNE while maintaining acceptable positioning accuracy, both the integral accuracy rates and accessibility may be improved. The paper analyses the composition and information characteristics of working satellite constellations in integrated GLONASS and pseudolites positioning in the Arctic region of Russia. Our study performed by simulation modelling has established considerable redundancy of working constellations at the nominal value of admissible satellite elevation. This factor has been studied for forming controllable working constellations in aircraft on board navigation and landing complex.

scholarly journals The role of tropopause polar vortices in the intensification of Summer Arctic cyclones

2021 ◽  
Author(s):  
Suzanne L. Gray ◽  
Kevin Hodges ◽  
Jonathan Vautrey ◽  
John Methven
Keyword(s):  
Three Dimensional ◽  
Arctic Region ◽  
The Arctic ◽  
Polar Regions ◽  
Synoptic Scale ◽  
Coherent Vortices ◽  
Cyclone Genesis ◽  
Ecmwf Reanalysis ◽  
The Arctic Region

<p>Human activity in the Arctic is expected to increase as new regions become accessible, with a consequent need for reliable forecasts of hazardous weather. Arctic cyclones are synoptic-scale cyclones developing within or moving into the Arctic region. Meso- to synoptic-scale tropopause-based coherent vortices called tropopause polar vortices (TPVs) are frequently observed in polar regions and are a proposed mechanism for Arctic cyclone genesis and intensification. While the importance of pre-existing tropopause-level features for cyclone development, and their existence as part of the three-dimensional mature cyclone structure, is well established in the mid-latitudes, evidence of the importance of pre-existing TPVs for Arctic cyclone development is more limited. Here we present a climatology and characteristics of summer Arctic cyclones and TPVs, produced by tracking them in the latest global ECMWF reanalysis (ERA5), and determine the role of pre-existing TPVs in the initiation and intensification of these cyclones.</p>

Soviet terms for the north of the USSR

Polar Record ◽  
1961 ◽  
Vol 10 (69) ◽  
pp. 609-613 ◽  
Author(s):  
T. E. Armstrong
Keyword(s):  
Arctic Region ◽  
The Arctic ◽  
Polar Regions ◽  
Tree Line ◽  
Precise Meaning ◽  
The North ◽  
Soviet Literature ◽  
Definition Of ◽  
Extreme North ◽  
The Arctic Region

There has for long been discussion among Soviet geographers on the definition of various terms in Soviet usage to indicate the northern part of the USSR. Some of these terms—“the Arctic” [Arktika], “the Arctic region” [arkticheskaya oblast'], “the sub-Arctic” [subarktika], “the polar regions” [Zapolyar'ye]—are normally used to denote areas defined according to physical criteria. Such criteria are similar to those usually applied outside the USSR, such as the “10° C. July isotherm”, the “tree line”, or the “limit of continuous permafrost”, and, again as in the non-Soviet world, the terms have no generally accepted precise meaning and must be defined by each user. But in addition to these terms for natural regions, there are certain terms in predominantly economic and administrative usage: “the north” [sever], “the far north” [dal'niy sever], “the extreme north” [krayniy sever], “the northern marches” [severnyye okrainy], and “the Soviet north” [sovetskiy sever]. Some explanation of their current connotations may be helpful to those studying Soviet literature.

The International Geophysical Year

1957 ◽  
Vol 10 (1) ◽  
pp. 17-30 ◽  
Author(s):  
Harold Spencer Jones
Keyword(s):  
Arctic Region ◽  
The Arctic ◽  
Polar Regions ◽  
International Polar Year ◽  
International Geophysical Year ◽  
Primary Object ◽  
International Polar ◽  
Meteorological Observations ◽  
One Year ◽  
The Arctic Region

In 1874, the Austrian arctic scientist, Weyprecht, on his return from an Austro-Hungarian polar expedition stated that, though many countries had sent expeditions into the polar regions at great expense and involving appreciable hazards to those participating, no important contributions to knowledge had resulted from them. They had done a certain amount of mapping and obtained a few meteorological observations but the primary object had been, as a matter of national prestige, to plant the flag nearer to the Pole than had been reached before. In his opinion what was needed for the advancement of knowledge about the polar regions was that nations should collaborate in sending expeditions to various parts of the arctic region to make observations throughout the whole of one year. Largely because of his persistent advocacy of this view, the value of the proposal came to be recognized, and as a result the enterprise known as the First International Polar Year was developed. A number of countries combined to send expeditions to establish observing stations at selected points in the arctic region to make observations throughout the year 1882–3 in meteorology and geomagnetism and also of the aurora. The observations made during this Polar Year contributed appreciably to knowledge of geomagnetism and of meteorology.

scholarly journals Danish Straits versus Turkish Straits: The Potential Impact of Prospective Russian Oil Exports

2014 ◽  
Vol 6 (2) ◽  
pp. 223-239
Author(s):  
Mehmet Efe Biresselioglu ◽  
Muhittin Hakan Demir ◽  
Sinem Dönmez
Keyword(s):  
Energy Security ◽  
Arctic Region ◽  
The Arctic ◽  
Oil Resources ◽  
Oil Exports ◽  
Oil Export ◽  
Strategic Position ◽  
Potential Impact ◽  
Open Question ◽  
The Arctic Region

The Danish Straits, which connect Baltic Sea to North Sea as an oil transit choke point, are becoming vastly important as a gateway to Europe for Russian oil exports. In terms of the future source of Russian oil, the country is estimated to hold half of the total Arctic resources. This indicates the forthcoming increase in the importance of Danish Straits in the global energy security. Besides, two additional alternative and important choke points are located in Turkey, which are the Straits of Bosporus and Dardanelles, known as Turkish Straits. These straits are also one of the significant exit points of Russian oil exports but as Russia shifted its direction of oil exports toward Baltic ports, the strategic position of Turkish Straits have been affected from this transition as well. It is an open question whether the Turkish Straits will continue to be the outlet of Russian oil exports or the Danish Straits will take over that position in line with the oil resources development in the Arctic Region. This study aims to analyse the Turkish and Danish Straits and establish their significance in terms of energy security. The current and future oil export strategies of Russia on the existing chokepoints are also discussed, with special emphasis on the potential impacts of Arctic development as Russia continues with the exploration and extraction of Arctic oil resources.

scholarly journals CLIMATE CHANGE IN ARCTICA: LOCAL AND GLOBAL IMPACT ON THE ENVIRONMENT

2020 ◽  
pp. 7-16
Author(s):  
Наталья Евгеньевна Сердитова
Keyword(s):  
Climate Change ◽  
High Sensitivity ◽  
Arctic Region ◽  
The Arctic ◽  
Polar Regions ◽  
Global Impact ◽  
The Arctic Region

В работе сделан обзор последних научных исследований в области изменения климата в полярных районах и связанных с этими изменениями рисками. Отмечен ускоренный характер потепления в арктическом регионе и высокая чувствительность окружающей среды и инженерной инфраструктуры к происходящим изменениям. Рассмотрены возможные пути адаптации к этим изменениям, смягчение их последствий и информационно-образовательные аспекты. Results of recent research on climate change in polar regions and the risks associated are reviewed. The accelerated nature of warming in the Arctic region and the high sensitivity of the environment and engineering infrastructure to the changes are noted. Possible ways of adaptation to these changes, mitigation of their consequences, and informational and educational aspects are considered.

Nuclear icebreaker fleet and power supply on the basis of floating power units

2018 ◽  
Vol 35 (4) ◽  
pp. 110-113
Author(s):  
V. A. Tupchienko ◽  
H. G. Imanova
Keyword(s):  
Foreign Policy ◽  
Power Supply ◽  
Nuclear Power ◽  
Arctic Region ◽  
Nuclear Industry ◽  
The Arctic ◽  
Far North ◽  
The Arctic Region

The article deals with the problem of the development of the domestic nuclear icebreaker fleet in the context of the implementation of nuclear logistics in the Arctic. The paper analyzes the key achievements of the Russian nuclear industry, highlights the key areas of development of the nuclear sector in the Far North, and identifies aspects of the development of mechanisms to ensure access to energy on the basis of floating nuclear power units. It is found that Russia is currently a leader in the implementation of the nuclear aspect of foreign policy and in providing energy to the Arctic region.

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