Application of the expeditionary geochemical laboratory in the conditions of the polar regions (on the example of portative chromatography with passive concentrators)

2020 ◽  
Author(s):  
Andrew Yu. Belonosov ◽  
◽  
Michael N. Baldin ◽  
Sergey A. Sheshukov ◽  
Vladimir M. Gruznov ◽  
...  
Keyword(s):  
Polar Region ◽  
Field Work ◽  
The Arctic ◽  
Polar Regions ◽  
Domestic Technology ◽  
Passive Adsorption ◽  
Hydrocarbon Deposits ◽  
Increase Efficiency

At present, the method of passive adsorption, using German technology sorbers, is widely used to search for hydrocarbon deposits in the Polar region. Their efficiency is about 55%. The advantages of using domestic technology "ЭХО с ПКК" in the areal conditions of the Arctic are shown. This is the formation of a digital geochemical database directly during field work. To increase efficiency in the Arctic, methods of passive adsorption require significant refinement.

Stability of basal metabolic rate on a polar expedition

1961 ◽  
Vol 16 (3) ◽  
pp. 397-400 ◽  
Author(s):  
H. E. Lewis ◽  
J. P. Masterton ◽  
S. Rosenbaum
Keyword(s):  
Young Adults ◽  
Metabolic Rate ◽  
Basal Metabolic Rate ◽  
Field Work ◽  
Basal Metabolism ◽  
The Arctic ◽  
Polar Regions ◽  
Exposure To Cold ◽  
Efficient Protection ◽  
At Home

The basal metabolism studied in 29 young adults on 349 occasions over 2 years in the Arctic was 37.4 (sd α 3.7) kcal/m-2/hr-1, and well within the normal British standards. The variability showed no relationship to season. On polar expeditions, men's physiologically significant exposure to cold is small because of efficient protection by clothing and shelter. Information is needed about precise differences of microclimate in the polar regions and at home. Field work could more profitably be directed to the cognate problem of costs of various activities in the cold rather than basal metabolic rate. Submitted on April 25, 1960

scholarly journals The Changing Energy Balance of the Polar Regions in a Warmer Climate

2013 ◽  
Vol 26 (10) ◽  
pp. 3112-3129 ◽  
Author(s):  
Lennart Bengtsson ◽  
Kevin I. Hodges ◽  
Symeon Koumoutsaris ◽  
Matthias Zahn ◽  
Paul Berrisford
Keyword(s):  
Polar Region ◽  
Energy Transport ◽  
Climate Model ◽  
Radiant Energy ◽  
Surface Radiation ◽  
The Arctic ◽  
Polar Regions ◽  
Energy Fluxes ◽  
Intergovernmental Panel ◽  
Static Energy

Abstract Energy fluxes for polar regions are examined for two 30-yr periods, representing the end of the twentieth and twenty-first centuries, using data from high-resolution simulations with the ECHAM5 climate model. The net radiation to space for the present climate agrees well with data from the Clouds and the Earth’s Radiant Energy System (CERES) over the northern polar region but shows an underestimation in planetary albedo for the southern polar region. This suggests there are systematic errors in the atmospheric circulation or in the net surface energy fluxes in the southern polar region. The simulation of the future climate is based on the Intergovernmental Panel on Climate Change (IPCC) A1B scenario. The total energy transport is broadly the same for the two 30-yr periods, but there is an increase in the moist energy transport on the order of 6 W m−2 and a corresponding reduction in the dry static energy. For the southern polar region the proportion of moist energy transport is larger and the dry static energy correspondingly smaller for both periods. The results suggest a possible mechanism for the warming of the Arctic that is discussed. Changes between the twentieth and twenty-first centuries in the northern polar region show the net ocean surface radiation flux in summer increases ~18 W m−2 (24%). For the southern polar region the response is different as there is a decrease in surface solar radiation. It is suggested that this is caused by changes in cloudiness associated with the poleward migration of the storm tracks.

Production Support in the Arctic: a Strategic Approach

2021 ◽  
Vol 2021 (1) ◽  
pp. 15-27
Author(s):  
Aleksey Fadeev
Keyword(s):  
Industrial Safety ◽  
The Arctic ◽  
Polar Regions ◽  
Technical Problems ◽  
Economic Role ◽  
Sourcing Strategies ◽  
Strategic Approach ◽  
Mineral Production ◽  
Industrial Solutions ◽  
Hydrocarbon Deposits

The Arctic reserves of hydrocarbons play an important geostrategic and economic role for many states, whose energy security will rely on this region in the nearest decades. The development of hydrocarbon deposits in extreme conditions requires unique scientific and industrial solutions, as well as new sourcing strategies for attracting vehicles that can operate at low temperatures. Mineral production in the Polar regions is a complex technological, transport, and logistical task. As a result, each industrial production project needs a highly efficient and complex system of supporting projects, which involve naval aviation, marine fleet, integrated support bases, etc. In addition to solving technical problems, this production support system should comply with the highest standards of environmental and industrial safety, generating no adverse impact on the sensitive ecosystem of the Russian Arctic and adjacent marine territories.

International organisations for polar exploration

Polar Record ◽  
1949 ◽  
Vol 5 (37-38) ◽  
pp. 332-334 ◽  
Author(s):  
Brian Roberts
Keyword(s):  
Scientific Work ◽  
Field Work ◽  
The Arctic ◽  
Polar Regions ◽  
International Polar Year ◽  
International Polar ◽  
Scientific Results ◽  
Set Up ◽  
Work Done ◽  
The Antarctic

An Austrian polar explorer, Karl Weyprecht, was the first to advance a definite scheme for investigating the polar regions on an international level. Weyprecht's idea was that each interested government should establish one or more stations in the polar regions, and that scientific work should be done simultaneously at all stations according to a previously co-ordinated plan. Weyprecht's plan was discussed by an international conference which met at Hamburg in 1879. The delegates at this conference formed themselves into a permanent International Polar Commission whose task was to make further and more detailed plans. In 1880 a Second International Polar Conference met at Berne, and a Third met at St Petersburg in 1881. As a result of the work done by these conferences the First International Polar Year was organised in 1882–83. Eleven countries—Austria, Denmark, Finland, France, Germany, Great Britain, Holland, Norway, Russia, Sweden and U.S.A.—set up and manned for a year twelve stations in the Arctic and two in the Antarctic. The field work completed, the Fourth* and Fifth5 International Polar Conferences met in Vienna in 1884 and Munich in 1891, and arranged publication of the scientific results, which filled 27 volumes. At the Fifth Conference the International Polar Commission was dissolved, its work being completed.

Investigations of past climate and sea-ice variability in the fjord area by Station Nord, eastern North Greenland

1969 ◽  
Vol 35 ◽  
pp. 67-70 ◽  
Author(s):  
Niels Nørgaard-Pedersen ◽  
Sofia Ribeiro ◽  
Naja Mikkelsen ◽  
Audrey Limoges ◽  
Marit-Solveig Seidenkrantz
Keyword(s):  
Sea Ice ◽  
Outer Part ◽  
Late Summer ◽  
Field Work ◽  
The Arctic ◽  
Research Station ◽  
Fjord System ◽  
Sea Bottom ◽  
Satellite Radar ◽  
North Greenland

The marine record of the Independence–Danmark fjord system extending out to the Wandel Hav in eastern North Greenland (Fig. 1A) is little known due to the almost perennial sea-ice cover, which makes the region inaccessible for research vessels (Nørgaard-Pedersen et al. 2008), and only a few depth measurements have been conducted in the area. In 2015, the Villum Research Station, a new logistic base for scientific investigations, was opened at Station Nord. In contrast to the early exploration of the region, it is now possible to observe and track the seasonal character and changes of ice in the fjord system and the Arctic Ocean through remote sensing by satellite radar systems. Satellite data going back to the early 1980s show that the outer part of the Independence–Danmark fjord system is characterised by perennial sea ice whereas both the southern part of the fjord system and an area 20–30 km west of Station Nord are partly ice free during late summer (Fig. 1B). Hence, marine-orientated field work can be conducted from the sea ice using snow mobiles, and by drilling through the ice to reach the underlying water and sea bottom.

scholarly journals Enhanced Viral Activity in the Surface Microlayer of the Arctic and Antarctic Oceans

2021 ◽  
Vol 9 (2) ◽  
pp. 317
Author(s):  
Dolors Vaqué ◽  
Julia A. Boras ◽  
Jesús Maria Arrieta ◽  
Susana Agustí ◽  
Carlos M. Duarte ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Food Web ◽  
Physicochemical Characteristics ◽  
The Arctic ◽  
Microbial Food Web ◽  
Surface Microlayer ◽  
Polar Regions ◽  
Nutrient Inputs ◽  
Viral Activity ◽  
The Impact

The ocean surface microlayer (SML), with physicochemical characteristics different from those of subsurface waters (SSW), results in dense and active viral and microbial communities that may favor virus–host interactions. Conversely, wind speed and/or UV radiation could adversely affect virus infection. Furthermore, in polar regions, organic and inorganic nutrient inputs from melting ice may increase microbial activity in the SML. Since the role of viruses in the microbial food web of the SML is poorly understood in polar oceans, we aimed to study the impact of viruses on prokaryotic communities in the SML and in the SSW in Arctic and Antarctic waters. We hypothesized that a higher viral activity in the SML than in the SSW in both polar systems would be observed. We measured viral and prokaryote abundances, virus-mediated mortality on prokaryotes, heterotrophic and phototrophic nanoflagellate abundance, and environmental factors. In both polar zones, we found small differences in environmental factors between the SML and the SSW. In contrast, despite the adverse effect of wind, viral and prokaryote abundances and virus-mediated mortality on prokaryotes were higher in the SML than in the SSW. As a consequence, the higher carbon flux released by lysed cells in the SML than in the SSW would increase the pool of dissolved organic carbon (DOC) and be rapidly used by other prokaryotes to grow (the viral shunt). Thus, our results suggest that viral activity greatly contributes to the functioning of the microbial food web in the SML, which could influence the biogeochemical cycles of the water column.

Early Holocene ocean conditions off the Zachariæ Isstrøm, Northeast Greenland

2021 ◽  
Author(s):  
Joanna Davies ◽  
Anders Møller Mathiasen ◽  
Kristiane Kristensen ◽  
Christof Pearce ◽  
Marit-Solveig Seidenkrantz
Keyword(s):  
Climate Change ◽  
Ice Sheet ◽  
Greenland Ice Sheet ◽  
Atlantic Water ◽  
The Arctic ◽  
Future Climate Change ◽  
Polar Regions ◽  
Ice Shelf ◽  
Outlet Glacier ◽  
The Impact

<p>The polar regions exhibit some of the most visible signs of climate change globally; annual mass loss from the Greenland Ice Sheet (GrIS) has quadrupled in recent decades, from 51 ± 65 Gt yr<sup>−1</sup> (1992-2001) to 211 ± 37 Gt yr<sup>−1</sup> (2002-2011). This can partly be attributed to the widespread retreat and speed-up of marine-terminating glaciers. The Zachariae Isstrøm (ZI) is an outlet glacier of the Northeast Greenland Ice Steam (NEGIS), one of the largest ice streams of the GrIS (700km), draining approximately 12% of the ice sheet interior. Observations show that the ZI began accelerating in 2000, resulting in the collapse of the floating ice shelf between 2002 and 2003. By 2014, the ice shelf extended over an area of 52km<sup>2</sup>, a 95% decrease in area since 2002, where it extended over 1040km<sup>2</sup>. Paleo-reconstructions provide an opportunity to extend observational records in order to understand the oceanic and climatic processes governing the position of the grounding zone of marine terminating glaciers and the extent of floating ice shelves. Such datasets are thus necessary if we are to constrain the impact of future climate change projections on the Arctic cryosphere.</p><p>A multi-proxy approach, involving grain size, geochemical, foraminiferal and sedimentary analysis was applied to marine sediment core DA17-NG-ST8-92G, collected offshore of the ZI, on  the Northeast Greenland Shelf. The aim was to reconstruct changes in the extent of the ZI and the palaeoceanographic conditions throughout the Early to Mid Holocene (c.a. 12,500-5,000 cal. yrs. BP). Evidence from the analysis of these datasets indicates that whilst there has been no grounded ice at the site over the last 12,500 years, the ice shelf of the ZI extended as a floating ice shelf over the site between 12,500 and 9,200 cal. yrs. BP, with the grounding line further inland from our study site. This was followed by a retreat in the ice shelf extent during the Holocene Thermal Maximum; this was likely to have been governed, in part, by basal melting driven by Atlantic Water (AW) recirculated from Svalbard or from the Arctic Ocean. Evidence from benthic foraminifera suggest that there was a shift from the dominance of AW to Polar Water at around 7,500 cal. yrs. BP, although the ice shelf did not expand again despite of this cooling of subsurface waters.</p>

scholarly journals Wave measurements on sea ice: developments in instrumentation

2006 ◽  
Vol 44 ◽  
pp. 108-112 ◽  
Author(s):  
M.J. Doble ◽  
D.J.L. Mercer ◽  
D.T. Meldrum ◽  
O.C. Peppe
Keyword(s):  
Satellite Communications ◽  
Weddell Sea ◽  
Data Recovery ◽  
The Arctic ◽  
Polar Regions ◽  
Constant Attention ◽  
Wave Measurements ◽  
Wire Strain ◽  
Propagation Of Waves ◽  
Communications System

AbstractTraditional methods of measuring the propagation of waves originating from ocean swell and other sources have relied on wire strain gauges, accelerometers or tiltmeters. All methods required constant attention to keep in range, while data recovery has demanded that the instrument site be revisited. In this paper, we describe the use of ultra-sensitive tiltmeters and novel re-zeroing techniques to autonomously gather wave data from both polar regions. A key feature of our deployments has been the use of the Iridium satellite communications system as a way of ensuring continuous data recovery and remote control of the instrumentation. Currently four instruments have been successfully reporting from the Arctic Ocean for over 18 months, with two further units deployed in 2005, one in the Weddell Sea, Antarctica, and one additional unit in the Arctic.

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