№ 2 (96) 2013
| ||А.А.Киселев, А.И.Решетников Метан в Российской Арктике:
результаты наблюдений и расчетов (.pdf)||5|
| ||Г.Н.Антоновская, Я.В.Конечная, А.Н.Морозов Сейсмическая активность арктической зоны: новые данные по западному сектору (.pdf)||16|
| ||Г.К.Зубакин, Н.Е.Иванов, А.В.Нестеров Сопряженность дрейфа айсбергов с полем атмосферного давления в северо-восточной части Баренцева моря (.pdf)||26|
| ||В.Г.Дмитриев К вопросу о возможностях снижения риска от воздействия опасных и экстремальных природных явлений для различных видов деятельности в морской Арктике (.pdf)||41|
| ||В.П.Епифанов, Л.М.Саватюгин Влияние препятствий на ложе на движение ледника (.pdf)||55|
| ||М.Ю.Кулаков, А.П.Макштас Роль дрейфа льда в формировании ледяного покрова Северного Ледовитого океана в начале XXI века (.pdf)||67|
| ||Э.И.Луценко, В.Е.Лагун Полярные мезомасштабные циклоны в атмосфере над Баренцевым и Карским морями (.pdf)||76|
| ||З.М.Гудкович, В.П.Карклин, Е.У.Миронов, В.В.Иванов, С.М.Лосев, Л.Н.Дымент, В.М.Смоляницкий, С.В.Фролов, А.В.Юлин, Е.А.Усольцева Развитие ледовых и метеорологических условий в Арктике в период 2007–2013 гг. (.pdf)||90|
| ||В.В.Харитонов Некоторые результаты измерения толщины ровного льда на дрейфующей станции «Северный полюс-38» (.pdf)||103|
| ||Б.В.Иванов, В.Ф.Тимачев, П.Н.Священников, А.П.Макштас, В.М.Бедненко, А.К.Павлов Энергомассообмен между океаном и атмосферой в районе зимней полыньи к северу от архипелага Шпицберген (.pdf)||111|
| ||Памяти Е.Г.Никифорова (.pdf)||119|
Table of contents
| ||A.A.Kiselev, A.I.Reshetnikov Methane in the Russian Arctic: measurements and model estimations||5|
The short review of Russian recent publications devoted to atmospheric methane problem is
shown. The basic physical and chemical features of methane are mentioned. Also the methane emission
and climate warming effect problems are shown. The relevant CH4 concentration measurements at
the Russian Arctic stations are presented. The estimations of both methane emission from the Russian
territory and climatic effect of atmospheric methane content are discussed.
| ||G.N.Antonovskaya, Ya.V.Konechnaya, A.N.Morozov Seismic activity of the Arctic zone: new Data on the west sector||16|
The new results of seismic activity in the Arctic zone recorded with new station installed
on Franz Josef Land are presented. Seismic data obtained for the polar region are important for
geodynamic model construstions.
| ||G.K.Zubakin, N.E.Ivanov, A.V.Nesterov Correlation of iceberg drift with fieds of atmospheric pressure in the north-eastern Barents sea||26|
The drift of eight icebergs in the North-Eastern Barents Sea since end of May till August 2009
with duration of 20 – 90 days is studied. Iceberg drift correlation with sea level pressure field comes
up with the drift speed regression according pressure gradient. The matter was examined based on
A.M.Obukhov theory and on the ground of vectors correlation metrics in the invariant form. Estimates
of wind drift and non-wind drift were made by correlation method of Watanabe–Gudkovitch. The total
correlation is 0,75–0,9. It is extenuated in flat gradient field by 0,15–0,2. The average wind drift is
westward and south-westward. Its magnitude is 1,5–5,0 cm/sec at average scalar speed of 4–13 cm/
sec, 20–25 cm/sec at maximum. Estimates amended according the wind drift of wind-driven coefficient
and geostrophic wind alteration angle are 0,010–0,015, 9–18o. Valuations of non-wind drift make
clear the cyclonic circulation in the North-East of the Barents Sea with 5 cm/sec near Frantz Josef
Land; 8 cm/sec near Novaya Zemlya and 0,5 cm/sec in the circulation center.
| ||V.G.Dmitriev On the question of reducing the risk of exposure to hazardous and extreme natural phenomena for various activities in the marine Arctic||41|
The article discusses a theoretical point of some of the issues to reduce the risk of exposure
to hazardous and extreme natural phenomena for various activities in the aspect of meteorological
support activities. Shown to reduce the risk of the necessary conditions are to increase knowledge
about the environment, improving the reliability of prediction of natural conditions and taking into
account the impact of natural phenomena on security (and / or efficiency) activities. Attention is
paid to the fundamental problem of the predictability of natural conditions and limit the accuracy of
forecasts. An approach to the evaluation of the limit of accuracy for a certain type of projection. In the article the problems of rational use of hydrometeorological information as a factor in reducing the risk of the examples of the concept of influence functions and hydrometeorological risk insurance.
| ||V.P.Epifanov, l.M.Savatyugin Bed obstacles impact on glacier movement||55|
The acoustic emission (AE) spectrogram signals at contact destruction of the ice frozen to
substrate on various shape obstacles shifted on the constrained conditions are investigated. The
frequency, amplitude, duration of AE signals and their sequence in time are measured within the
15 Hz-20 kHz frequency range. The serpentine and other materials are used as substrates. The
ice/serpentine adhesive junction strength is determined and the defect accumulation kinetics on
obstacles is investigated. The obstacles increase the axial shifting force and change the boundary
friction conditions by an order. The plastic deformations accompanied by crack formation in ice
contact layer are added to the adhesive destruction on contact patches. Two characteristic incubation
time periods of adhesive and cohesive ice destruction are determined. Common regularities in the
destruction mechanisms characterized by AE signal frequency reduction and periodic pulsations are
found out in acoustic spectra obtained from remote sources in the Aldegonda glacier (Spitzbergen)
and the model experiments.
| ||M.Yu.Kulakov, A.P.Makshtas The role of ice drift in formation of sea ice cover in the arctic ocean at the beginning of XXI centure||67|
Based on the results of numerical experiments with couple sea ice- ocean model AARI-IOCM
and data of surface air temperature and sea level pressure fields from NCEP/NCAR reanalysis the
assessment of the role of ice drift in formation of sea ice cover peculiarities in the Arctic Ocean
during 2001–2012 years is performed. Prognostic evaluations of optimal positions for organization
of future drifting station «North Pole-41» are presented.
| ||E.I.Lutsenko, V.E.Lagun Polar meso-scale cyclones in the atmosphere over Barents and Kara seas||76|
This Article presents information about Arctic atmosphere unique natural event - polar meso-
scale cyclone (PMC). PMCs were descavered and documented in the middle of ХХ century based on
atmosphere satellite sounding methods development. Polar mesocyclones attract an intensive attention
of meteorologists, climatologists, oceanologists, sea transport staff and Arctic shelf oil extraction
specialists. An applied interest to PMCs is due to necessity of possible origin strong weather storm
and events forecasting and their impact on economic objects infrastructure and sea transport tools
Polar meso-cyclonic vortex weather conditions, duration and drift speed data are presented in this
Article. Possible polar mesocyclone genesis mechanisms and their annual course and interannual
variations peculiarities are described.
| ||Z.M.Gudkovich, V.P.karklin, E.U.Mironov, V.V.Ivanov, S.M.Losev, L.N.Dyment, V.M.Smolyanitsky, S.V.Frolov, A.V.Yulin, E.A.Usoltseva Development of ice and weather conditions in the Arctic during 2007–2013||90|
The period 2007–2013 was characterized by a large-scale restructuring in the developmeof atmospheric processes and large anomalies in the development of the ice cover occurring again10the background of continued warming. Frequency of Arctic anticyclone increased in the autumn-winter period while its amplification and westward displacement lead to the blockage of the Atlantic cyclones, accompanied by an intense heat transfer towards the western Arctic seas and the Arctic Basin, adjacent to the North Atlantic. The increase in the frequency of the Arctic anticyclone in the winter time formed a stable anticyclonic ice drift in the Arctic Basin, with the center of circulation also shifted westward.
Due to restructuring of the atmospheric processes, conditions of the ice cover formation
were significantly different in the western and eastern regions of the Arctic during 2007–2013. This
manifested itself in the position of the residual and old ice boundaries in the Arctic Basin, as well as changes in the sea ice seasonal phenomena in the Arctic Siberian shelf seas, where the signs of the warming period completion were revealed, particularly noticeable in the eastern Arctic seas. Change of cyclonic circulation to anticyclonic one, which was occasionally observed during the period of ice melt and stably occurred in the autumn, and then further during winter time, is characteristic for a transition process from a «warm» to a «cold» climate period.
| ||V.V.Kharitonov Some results of measurement of level ice thickness at «North Pole-38» drifting station||103|
The paper presents the results of measurement of level ice thickness conducted in 2010–2011
at «North Pole-38» drifting station. Data is analyzed in comparison with previous expedition data.
Empirical formulae of estimation of level ice thickness versus snow thickness and day-degrees
approximate the data collected rather well. The graphs show a correspondence between calculated
and measured values of level ice thickness. The mean thickness growth of residual one-year ice is
estimated at 50 cm during the year. Mean value of snow cover thickness at the ice polygon did not
exceed the value of 26 cm. Correlation coefficient between growing rate of ice thickness and current
velocity under the ice equals 0,5 and is statistically significant. This points the connection between the two characteristics.
| ||B.V.Ivanov, V.F.Timachev, P.N.Sviashchennikov, A.P.Makshtas, V.M.Bednenko, A.K.Pavlov Energy mass exchange between ocean and atmosphere in the area of winter polynya to the north of Svalbard||111|
The results of the winter sea ice-free area of the expedition in the Arctic Basin to the north of
Svalbard (polynya «Whale Bay») on the Norwegian research vessel «Helmer Hanssen» in January
2012 are analysis. The characteristics of the turbulent energy-mass calculated using an algorithm,
which is based on semi-empirical theory of «Monin–Obukhov», adapted to the conditions of marine
meteorological observations are estimates. The results are compared with the data obtained in
this area in 1986 by the Russian research icebreaker «Otto Schmidt». The features of energy-mass
exchange explain by synoptic and ice conditions in the study area. We consider the relationship with
the processes of convective mixing and biological productivity.
| ||In Memory of E.G.Nikiforov ||119|
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