The intensity of the accumulation of residual deformations in the railway track operated in complex natural and climatic conditions

2020 ◽  
pp. 24-34
Author(s):  
L. S. Blazhko ◽  
◽  
E. V. Chernyaev ◽  
V. A. Chernyaeva ◽  
V. V. Ganchits ◽  
...  
Keyword(s):  
Practical Importance ◽  
Strength Properties ◽  
Climatic Conditions ◽  
Railway Track ◽  
The Arctic ◽  
Track Structure ◽  
Arctic Circle ◽  
Railway Line ◽  
The North ◽  
Residual Deformations

Objective: To analyze the results of observations conducted to assess the intensity of the accumulation of residual deformations in the railway track structure operated in severe natural and climatic conditions (the observation site is located above the Arctic Circle). The following were also taken into account: the railway track design (type of intermediate fasteners, track slab, condition of the ballast bed), the railway line scheme, the tonnage handled, the train speed and the axle load. Methods: Mathematical statistics, data processing. Results: The dependences of the railway track deformation and strength properties, including the tonnage handled, have been obtained. Practical importance: The presented observation results of the assessment of the intensity of deformation accumulation in the railway track structure operated in the severe natural and climatic conditions of the North of the Arctic Circle indicate that the use of increased axle load wagons will entail a significant reduction in overhaul life and an increase in the track maintenance operating expenditures

Northward ho! Obama, Diefenbaker and the North American Arctic

Polar Record ◽  
2015 ◽  
Vol 52 (2) ◽  
pp. 252-255
Author(s):  
Klaus J. Dodds
Keyword(s):  
Native American ◽  
Aleutian Islands ◽  
The Arctic ◽  
Arctic Circle ◽  
The North ◽  
American President ◽  
North American Arctic ◽  
To Come ◽  
Franklin Delano Roosevelt ◽  
Lying Down

President Barrack Obama became, in September 2015, the first US president to travel north of the Arctic Circle. Having started his Alaskan itinerary in Anchorage, attending and speaking at a conference involving Secretary of State John Kerry and invited guests, the president travelled north to the small town of Kotzebue, a community of some 3000 people with the majority of inhabitants identifying as native American. Delivered to an audience in the local high school numbering around 1000, the 41st US president placed his visit within a longer presidential tradition of northern visitation: I did have my team look into what other Presidents have done when they visited Alaska. I’m not the first President to come to Alaska.Warren Harding spent more than two weeks here – which I would love to do. But I can't leave Congress alone that long. (Laughter.) Something might happen. When FDR visited – Franklin Delano Roosevelt – his opponents started a rumor that he left his dog, Fala, on the Aleutian Islands – and spent 20 million taxpayer dollars to send a destroyer to pick him up. Now, I’m astonished that anybody would make something up about a President. (Laughter.) But FDR did not take it lying down. He said, “I don't resent attacks, and my family doesn't resent attacks – but Fala does resent attacks. He's not been the same dog since.” (Laughter.) President Carter did some fishing when he visited. And I wouldn't mind coming back to Alaska to do some fly-fishing someday. You cannot see Alaska in three days. It's too big. It's too vast. It's too diverse. (Applause.) So I’m going to have to come back. I may not be President anymore, but hopefully I’d still get a pretty good reception. (Applause.) And just in case, I’ll bring Michelle, who I know will get a good reception. (Applause.) . . .. But there's one thing no American President has done before – and that's travel above the Arctic Circle. (Applause.) So I couldn't be prouder to be the first, and to spend some time with all of you (Obama 2015a).

scholarly journals Application of maglev technologies in the european northeast and the cisural north of Russia

2017 ◽  
Vol 3 (3) ◽  
pp. 54-63 ◽  
Author(s):  
Evgeny U Sundukov ◽  
Sergej M Kochergin ◽  
Leonid F Selivanov
Keyword(s):  
System Analysis ◽  
Practical Importance ◽  
Passenger Transport ◽  
Liquid Hydrocarbons ◽  
Water Currents ◽  
Railway Line ◽  
Gas Processing ◽  
The North ◽  
Cargo Transport ◽  
Processing Plants

Technologies of small-sized maglev transport in trestle execution are offered. Work purpose: to define possible options of use of maglev-technologies in the north of Russia. Methods: system analysis, comparison, analogy. Result: magnetolevitation trestle technologies are recommended for realization. Practical importance of work: transport communications from gas processing plants on the coast of Gulf of Ob to a railway line of Obskaya-Bovanenkovo can be realized, the rupture of an automobile highway Usinsk - Naryan-Mar can be eliminated, protection of overpasses and vehicles against increase in levels of water currents can be provided. Conclusion: the trestle of arch type can be used for conveyance: small-sized cargo transport modules (and passenger transport modules); special vesseles (barrels, cylinders, minitanks, etc.) for transportation of liquid hydrocarbons; cars of normal dimensions if all of them are equipped with sources of magnetic field.

Sustainable Development of the Arctic

2019 ◽  
pp. 396-415
Author(s):  
Liudmila Lapochkina ◽  
Elena Vetrova
Keyword(s):  
Sustainable Development ◽  
Natural Resources ◽  
Negative Impact ◽  
Methodological Approach ◽  
Climatic Conditions ◽  
The Arctic ◽  
International Treaties ◽  
The Sustainable Development ◽  
Criteria And Indicators ◽  
The North

Circumpolar territories and the regions related to the Arctic are those rich with natural resources. They have a high potential for the development of mining and extractive industries. The abundance with resources makes the North increasingly attractive for investments. However, circumpolar territories are characterized by peculiar socio-economic, natural, and climatic conditions which taken together frequently pose a negative impact on people and hinder the exploration opportunities of the Arctic resources. In global, regional, and sub-regional levels, the development of the Arctic is heavily regulated by multilateral international treaties. However, the issues of monitoring and assessment of the sustainable development of the Arctic remain open, which stems from the absence of agreed criteria and indicators for assessing sustainability in the context of national, regional, and scientific approaches. It necessitates the development of a specific methodological approach to the establishment of a system to monitor and assess the sustainable development of the Arctic.

Shrines and Sovereigns: Life, Death, and Religion in Rural Azerbaijan

2011 ◽  
Vol 53 (3) ◽  
pp. 654-681 ◽  
Author(s):  
Bruce Grant
Keyword(s):  
Twentieth Century ◽  
Open Field ◽  
Religious Tradition ◽  
Full Scale ◽  
The Arctic ◽  
The West ◽  
Arctic Circle ◽  
Rapid Succession ◽  
The North ◽  
Land Mass

Shrines fill the Eurasian land mass. They can be found from Turkey in the west to China in the east, from the Arctic Circle in the north to Afghanistan in the south. Between town and country, they can consist of full-scale architectural complexes, or they may compose no more than an open field, a pile of stones, a tree, or a small mausoleum. They have been at the centers and peripheries of almost every major religious tradition of the region: Zoroastrianism, Judaism, Christianity, Islam, and Buddhism. Yet in the formerly socialist world, these places of pilgrimage have something even more in common: they were often cast as the last bastions of religious observance when churches, mosques, temples, and synagogues were sent crashing to the ground in rapid succession across the twentieth century.

scholarly journals Diurnal and annual variations of meteor rates at the Arctic circle

2004 ◽  
Vol 4 (1) ◽  
pp. 1-20 ◽  
Author(s):  
W. Singer ◽  
J. Weiß ◽  
U. von Zahn
Keyword(s):  
Diurnal Variations ◽  
The Arctic ◽  
Noctilucent Cloud ◽  
Arctic Circle ◽  
Annual Cycles ◽  
Annual Variations ◽  
The North ◽  
Radar Antenna ◽  
Metal Layers ◽  
Antenna Field

Abstract. Meteors are an important source for (a) the metal atoms of the upper atmosphere metal layers and (b) for condensation nuclei, the existence of which are a prerequisite for the formation of noctilucent cloud particles in the polar mesopause region. For a better understanding of these phenomena, it would be helpful to know accurately the annual and diurnal variations of meteor rates. So far, these rates have been little studied at polar latitudes. Therefore we have used the 33 MHz meteor radar of the ALOMAR observatory at 69° N to measure the meteor rates at this location for two full annual cycles. This site, being within 3° of the Arctic circle, offers in addition an interesting capability: The axis of its antenna field points (almost) towards the North ecliptic pole once each day of the year. In this particular viewing direction, the radar monitors the meteoroid influx from (almost) the entire ecliptic Northern hemisphere. We report on the observed diurnal variations (averaged over one month) of meteor rates and their significant alterations throughout the year. The ratio of maximum over minimum meteor rates throughout one diurnal cycle is in January and February about 5, from April through December 2.3±0.3. If compared with similar measurements at mid-latitudes, our expectation, that the amplitude of the diurnal variation is to decrease towards the North pole, is not really borne out. Observations with the antenna axis pointing towards the North ecliptic pole showed that the rate of deposition of meteoric dust is substantially larger during the Arctic NLC season than the annual mean deposition rate. The daylight meteor showers of the Arietids, Zeta Perseids, and Beta Taurids supposedly contribute considerably to the June maximum of meteor rates. We note, though, that with the radar antenna pointing as described above, all three meteor radiants are close to the local horizon. This radiant location should cause most of these shower meteors to occur above 100 km altitude. In our observations, the June maximum in meteor rate is produced, however, almost exclusively by meteors below 100 km altitude.

scholarly journals The influence of Arctic air masses on climatic conditions of the snow accumulation period in the center of the European territory of Russia

2021 ◽  
pp. 16-25
Author(s):  
Julia Nikolaevna Chizhova
Keyword(s):  
North Atlantic ◽  
Arctic Oscillation ◽  
Winter Precipitation ◽  
Climatic Conditions ◽  
The Arctic ◽  
Air Masses ◽  
The North ◽  
The Arctic Oscillation ◽  
The North Atlantic Oscillation ◽  
The Relationship

The subject of this article is exmination of the influence of the Arctic air flow on the climatic conditions of the winter period in the center of the European territory of Russia (Moscow). In recent years, the question of the relationship between regional climatic conditions and such global circulation patterns as the North Atlantic Oscillation (NAO) and the Arctic Oscillation (AK) has become increasingly important. Based on the data of long-term observations of temperature and precipitation, the relationship with the AK and NAO was considered. For the winter months of the period 2014-2018, the back trajectories of the movement of air masses were computed for each date of precipitation to identify the sources of precipitation. The amount of winter precipitation that forms the snow cover of Moscow has no connection with either the North Atlantic Oscillation or the Arctic Oscillation. The Moscow region is located at the intersection of the zones of influence of positive and negative phases of both cyclonic patterns (AK and NAO), which determine the weather in the Northern Hemisphere. For the winter months, a correlation between the surface air temperature and NAO (r = 0.72) and AK (r = 0.66) was established. Winter precipitation in the center of the European territory of Russiais mainly associated with the unloading of Atlantic air masses. Arctic air masses relatively rarely invade Moscow region and bring little precipitation (their contribution does not exceed 12% of the total winter precipitation).

scholarly journals Forward to the north: two Euro-Mediterranean bumblebee species now cross the Arctic Circle

2015 ◽  
Vol 51 (4) ◽  
pp. 303-309 ◽  
Author(s):  
Baptiste Martinet ◽  
Pierre Rasmont ◽  
Björn Cederberg ◽  
Dimitri Evrard ◽  
Frode Ødegaard ◽  
...  
Keyword(s):  
The Arctic ◽  
Arctic Circle ◽  
Bumblebee Species ◽  
The North

Frost-Resistant Elastomeric Nanocomposites for Operation in the Far North Conditions

2019 ◽  
Vol 945 ◽  
pp. 412-416
Author(s):  
Natalia N. Petrova ◽  
V.V. Portnyagina ◽  
V.V. Mukhin ◽  
E.N. Timofeeva ◽  
N.V. Matveeva ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Climatic Conditions ◽  
The Arctic ◽  
New Mineral ◽  
Detonation Synthesis ◽  
Hydrocarbon Production ◽  
The North ◽  
Elastomeric Materials ◽  
Northern Territories ◽  
Bentonite Clays

Operation of elastomeric materials in the extreme climatic conditions of the North is a complex and expensive, since not always existing materials can provide the required level of low-temperature characteristics (down to-60 ° C). This leads to failure of machines and mechanisms, equipment downtime, additional costs for repair or replacement of rubber parts. The need for such materials is continuously growing due to the intensive development of the northern territories, the need to develop new mineral deposits and development of offshore hydrocarbon production. Propylene oxide rubber (Tg = -73 °С) and epichlorohydrin rubber Hydrin T6000 (Tg = -60 °С) have unique frost resistance, but there is a need to improve aggressive media resistance, wear resistance and relaxation properties (the ability to restore its shape after relieving the load). For the modification of rubbers, additives of both organic and inorganic nature were chosen: ultrafine polytetrafluoroethylene, single-walled and multi-walled carbon nanotubes, nanodiamond-containing carbon charge obtained by detonation synthesis, shungite, natural zeolites and bentonite clays. The operating properties of rubber were studied in accordance with standard methods. The structure of the obtained materials was studied by means of DSC, XRD, electron and atomic force microscopy. All developed materials are recommended for use in various industries (oil and gas, road, rail) in the Arctic regions with extreme climatic conditions.

scholarly journals Metagenome-assembled genomes of phytoplankton communities across the Arctic Circle

2020 ◽  
Author(s):  
A. Duncan ◽  
K. Barry ◽  
C. Daum ◽  
E. Eloe-Fadrosh ◽  
S. Roux ◽  
...  
Keyword(s):  
Environmental Dna ◽  
The Arctic ◽  
Protein Families ◽  
Genomic Context ◽  
Arctic Circle ◽  
Surface Ocean ◽  
The North ◽  
Phytoplankton Communities ◽  
Metagenome Sequencing ◽  
Plankton Diversity

AbstractPhytoplankton communities significantly contribute to global biogeochemical cycles of elements and underpin marine food webs. Although their uncultured genetic diversity has been estimated by planetary-scale metagenome sequencing and subsequent reconstruction of metagenome-assembled genomes (MAGs), this approach has yet to be applied for eukaryote-enriched polar and non-polar phytoplankton communities. Here, we have assembled draft prokaryotic and eukaryotic MAGs from environmental DNA extracted from chlorophyll a maximum layers in the surface ocean across the Arctic Circle in the Atlantic. From 679 Gbp and estimated 50 million genes in total, we recovered 140 MAGs of medium to high quality. Although there was a strict demarcation between polar and non-polar MAGs, adjacent sampling stations in each environment on either side of the Arctic Circle had MAGs in common. Furthermore, phylogenetic placement revealed eukaryotic MAGs to be more diverse in the Arctic whereas prokaryotic MAGs were more diverse in the Atlantic south of the Arctic Circle. Approximately 60% of protein families were shared between polar and non-polar MAGs for both prokaryotes and eukaryotes. However, eukaryotic MAGs had more protein families unique to the Arctic whereas prokaryotic MAGs had more families unique to south of the Arctic circle. Thus, our study enabled us to place differences in functional plankton diversity in a genomic context to reveal that the evolution of these MAGs likely was driven by significant differences in the seascape on either side of an ecosystem boundary that separates polar from non-polar surface ocean waters in the North Atlantic.

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