№ 4 (90) 2011
| ||А.В.Козачек, А.А.Екайкин, В.Я.Липенков, Ю.А.Шибаев, Р.Вайкмяэ. О связи климатической изменчивости Центральной Антарктиды с климатом средних и низких широт Южного полушария (.pdf)||5|
| ||А.А.Нюбом, С.М.Ковалев, К.В.Соболевский. Колебания ледяного поля дрейфующей станции СП-35 в диапазоне поверхностных и внутренних волн океана (.pdf)||14|
| ||В.В.Харитонов. Особенности строения торосов Байдарацкой губы, исследованных весной 2010 г. (.pdf)||21|
| ||И.А.Гангнус, Л.А.Духова, Е.В.Блошкина. Гидрохимическая структура вод в Российском секторе Арктического бассейна в летний период 2010 г (.pdf)||27|
| ||Е.Н.Русина, В.Ф.Радионов, Е.Е.Сибир. О возможности анализа данных наблюдений за общим содержанием озона и суммарной солнечной радиацией на движущихся платформах (.pdf)||39|
| ||Г.Н.Войнов. Методика контроля и редакции многолетних временных рядов уровня моря (.pdf)||51|
| ||А.Ф.Пушкин. Переописание трех видов многоколенчатых (Pycnogonida) рода Austropallene из Южного океана с таблицей для определения всех антарктических видов рода (.pdf)||62|
| ||А.А.Намятов. Особенности распределения концентраций растворенного кислорода в поверхностном слое Арктического бассейна (.pdf)||76|
| ||В.П.Епифанов, Л.М.Саватюгин. Акустические исследования абляционного слоя ледника: на примере ледника Альдегонда (Шпицберген) (.pdf)||87|
| ||И.Е.Фролов, И.М.Ашик, Г.А.Баскаков, С.А.Кириллов. Российские морские исследования Арктики – прошлое и настоящее (.pdf)||99|
| ||Л.М.Саватюгин. Жизнь Рудольфа Лазаревича Самойловича. (.pdf)||112|
Table of contents
| ||A.V.Kozachek, A.A.Ekaykin, V.Y.Lipenkov, Y.A.Shibaev, R.Vaikmäe. On the relationship between climatic variability in central Antarctica and the climate of middle and low latitudes of Southern Hemisphere||5|
31 октября 2011 г.
A.V.KOZACHEK, A.A.EKAYKIN, V.Y.LIPENKOV, Y.A.SHIBAEV, R.VAIKMÄE
ON THE RELATIONSHIP BETWEEN CLIMATIC VARIABILITY IN CENTRAL ANTARCTICA AND THE CLIMATE OF MIDDLE AND LOW LATITUDES OF SOUTHERN HEMISPHERE
Based on data of geochemical and glaciological investigations in snow pits and on snow cores, stack series of air temperature and snow accumulation rate variability in central Antarctica (Vostok station vicinity) have been obtained for the last 350 years. It has been shown that these parameters varied quasi-periodically with the wavelength of 30–60 years superimposed on the slight positive trend. The correlation of these series with the circulation indices of Southern Hemisphere has allowed to establish some regularities in the climatic variability of central Antarctica. We suggest that the climate of this region is mainly governed by the type of circulation in the SH: under conditions of zonal circulation negative anomalies of temperature and precipitation rate are observed, while during meridional circulation the sign of anomaly is opposite. It has been noted that in 1970 the sign of the relationship between many climatic parameters has changed that is likely related to the rearrangement of the climatic system of the SH. It has been also established that during the past 350 years this event happened at least 5 times.
Keywords: Antarctica, Southern Hemisphere, climate change, climatic indices, paleoclimate, isotope content, snow accumulation rate.
| ||A.A.Nubom, S.M.Kovalev, K.V.Sobolevskiy. Oscillations of ice fields of drifting station North Pole-35 in a surface and internal ocean wavebands ||14|
13 октября 2011 г.
A.A.NUBOM, S.M.KOVALEV, K.V.SOBOLEVSKIY
OSCILLATIONS OF ICE FIELDS OF DRIFTING STATION «NORTH POLE-35» IN A SURFACE AND INTERNAL OCEAN WAVEBANDS
On drifting station “North Pole-35” measurements of dynamic state of ice were conducted. Initial geographic coordinates of “North Pole-35” were 81°27’ of North latitude and 115°19’ of East longitude (to north-east from the Arctic Cape of Severnaya Zemlya archipelago in northern part of Taymyr ice array). Start the station – 21.09.2007. The results were analyzed using statistical, spectral and harmonic analysis. It were examined the cross correlation and autocorrelation functions of ice fields processes and meteorological parameters. As a result, amplitude and frequency of the wave movements under ice over the winter-spring period were determined.
Keywords: ice cover fluctuations, internal waves, amplitude, frequency, period.
| ||V.V.Kharitonov. Peculiarities of internal structure of the Baydaratskaya bey first-year ice ridges in spring 2010 ||21|
3 ноября 2011 г.
PECULIARITIES OF INTERNAL STRUCTURE OF THE BAYDARATSKAYA BEY FIRST-YEAR ICE RIDGES IN SPRING 2010
In 2010 the AARI carried out the expedition studies in the Baydaratskaya bey aimed at determining the morphometric characteristics of ice ridges by hot water drilling methods with recording the penetration rate on computer. Average ice thickness was 9 m and maximum ice thickness was 20 m. The peculiarities of ice ridges investigated are the presence of large voids with Y-dimension of 4–6 m within the keel and of hard ice blocks at lower part of keel. The examples of penetration rate record with such a structure of this kind are presented. A scheme of secondary ice ridge formation is observed.
Keywords: ice ridge, thermal drilling, keel, porosity.
| ||I.A.Gangnus, L.A.Duhova, E.V.Bloshkina. Hydrochemical structure of Russian part of Arctic basin during the summer, 2010 ||27|
3 ноября 2011 г.
I.A.GANGNUS, L.A.DUHOVA, E.V.BLOSHKINA
HYDROCHEMICAL STRUCTURE OF RUSSIAN PART OF ARCTIC BASIN DURING THE SUMMER, 2010
The article contains the results of hydrochemical measurements obtained during the Russian «Shelf-2010» expedition on board of R/V «Akademic Fedorov» in August-September of 2010. 30 full oceanographic stations and 135 samplings from sea surface were performed during the expedition. The content of dissolved oxygen, silicate, mineral and organic phosphorus, nitrate, nitrite, ammonium and organic nitrogen were measured in samplings. The low concentrations of mineral nitrogen, observed for major part of Arctic surface water, indicate that the primary production is limited by nitrogen and not by phosphorus and silicate. The region with high concentration of silicate (8–11 μM) and mineral phosphorus (0,7–0,9 μM) in surface layer were traced over the Mendeleev Ridge and proceeds over east slope of Lomonosov Ridge, extending to the north over all polar part of it, and continues in the Eurasian basin near the North Pole. Area of the maximum nitrates concentration (1,6–2,0 μM) doesn’t agree with area of high phosphorus and silicate and it is relatively displaced to the west. The waters of Pacific origin characterized by high nutrients and low dissolved oxygen on the depth 30–150 m are traced up to the North Pole area. The upwelling of this waters and their mixing with surface waters might cause the rise of nutrients concentration in photic layer of the North Pole area and over the Mendeleev Ridge.
Keywords: Arctic Basin, nutrients, dissolved oxygen, waters of Pacific origin.
| ||E.N.Rusina, V.F.Radionov, E.E.Sibir. On the possibility of the analysis of the data of observations of the total ozone and total solar radiation on moving platforms ||39|
17 мая 2011 г.
E.N.RUSINA, V.F.RADIONOV, E.E.SIBIR
ON THE POSSIBILITY OF THE ANALYSIS OF THE DATA OF OBSERVATIONS OF THE TOTAL OZONE AND TOTAL SOLAR RADIATION ON MOVING PLATFORMS
A question of possibility of the correct joint analysis and inter-comparison of data of long-term observations of varying in space and time characteristics of the state of the atmosphere, measured on the different moving platforms (MP) including drifting stations and research vessels (RV), is considered in this paper. For the moving platforms, such variability results in the statistical inhomogeneity of the data series of measurements, carried out at each of MP; it complicates the joint analysis of data collected at different MP. The transformation of variables, which results in obtaining the homogeneous data series for individual MP and their totality, was applied in [Русина, Генихович, 2010] to data of the total ozone (TO) measurements. The technique in use allows for excluding influence of the natural annual variations and of the systematic component of the spatial inhomogeneity from the analyzed data and for correct comparing of observational data obtained in different time periods and different regions of the Earth. Resulting data could be separated into two regimes, the first one corresponding to «normal situations» and the second one – to possible «significant anomalies». The purpose of this work is the confirmation of the expediency and effectiveness of this approach as for TO (with use of materials of additional observations of total ozone on the RV «Akademik Fedorov» in 2008–2010), as well as for the total solar radiation (in the analysis and comparison of the monthly sums of total radiation on drifting stations, working in the Arctic basin in 1954–1991 and 2007–2009).
Keywords: moving platforms, research vessels, drifting stations, relative anomalies, total ozone, monthly sums of total solar radiation.
| ||G.N.Voinov. Methods for quality control and revision the multiyear time series of sea level observations ||51|
11 ноября 2011 г.
METHODS FOR QUALITY CONTROL AND REVISION THE MULTIYEAR TIME SERIES OF SEA LEVEL OBSERVATIONS
The basic principles of control and revision multiyear of hourly sea level data are presented. At the heart of a new method are a new version of harmonic analysis of sea tides. The performance of this method in the use for quality control of sea level data and setting time series by a uniform series is noted.
Keywords: Tides, sea level data, harmonic analysis, treatment and reduction of sea level data.
| ||A.F.Pushkin. Redescription of three species of Pycnogonida from the genus Austropallene from the Southern Ocean with the key for identifications of all antarctic species of the genus||62|
24 октября 2011 г.
REDESCRIPTION OF THREE SPECIES OF PYCNOGONIDA OF THE GENUS AUSTROPALLENE FROM THE SOUTHERN OCEAN WITH THE KEY FOR IDENTIFICATIONS OF ALL ANTARCTIC SPECIES OF THE GENUS
Austropallene cornigera [Möbius, 1902] is the widespread notal-circumantarctic species of the genus Austropallene (Fam. Callipallenidae). This species occurring werld-wide is extremely variabl one the new vast factual avidenceas from different habitats have allowed us to make in the report redescription and to establish limite of variation in this specie and also to have reveal of three new species for science have been descriebed by author [Pushkin, 1993], closely related the A.cornigera, A.bucera, A.spinicornis and A.tenuicornis and to have given their descriptions and drawing. Apart from being different by other character these four species differ from each other by the structure of the claw chaeliphore: A.cornigera has on the inner surface of the fixed too two tubercles founding each other, whereas A.bucera has only one tubercle. In A.spinicornis apart from two tubercles on the fixed too there is a sfeep tuberde on the inner surface of the fixed too of the claw. Two tubercles on the inner surface of the fixed too of the clow in A.tenuicornis are separated from each other by a larger distance as in A.cornigera, by the same distance as in A.spinicornis. But A.tenuicornis differs from both species A.cornigera and A.spinicornis by the lack femoral glands. The paper includes a key for identification of all 10 antarctic species of this genus presently known.
Keywords: Pantopoda, Callipallenidae, Austropallene, Pycnogonida, systematic, morphology, Antarctica, Southern Ocean, biodiversity.
| ||A.A.Namyatov. Specia Distribution of Dissolved Oxygen Concentrations in the Surface Layer of the Arctic Basin ||76|
8 ноября 2011 г.
SPECIA DISTRIBUTION OF DISSOLVED OXYGEN CONCENTRATIONS IN THE SURFACE LAYER OF THE ARCTIC BASIN
Using the two hydro chemical databases of the Arctic and Antarctic Research Institute (AARI, Russia) and NODC (USA) the wide area of Arctic basin, embracing the major part of Amerasian sub basin and spreading from 0–180° meridian to Greenland and North American coast, having abnormally high concentrations of dissolved oxygen in surface layer in winter time, is revealed. Exceeding above the values of the oxygen solubility concentration, with the absence of photosynthesis, composes 4–5 %. The formation of this area is caused by the «saving» effect of high concentrations of dissolved oxygen being the consequence of photosynthesis during the summer light period. This effect is combination of the following peculiarities of hydrological regime of this area: ice conditions, causing abnormalities of «sea water – atmosphere» system gases interchange; lowest temperature of water, causing low intensity of mineralisation of organic matter; low intensity of vertical convection, caused by the presence of the steady pycnocline with «shielding» properties of mixing surface water with lower water layers, having low oxygen concentration.
Keywords: Arctic basin, surface layer, Amerasian sub basin, oxygen concentration, dissolved oxygen, oxygen biochemical consumption, oxygen saturation, Brunt-Vaisala frequency, process photosynthesis.
| ||V.P.Epifanov, L.M.Savatyugin. Acoustic studies of ablation layer of polar glacier: the Aldegondabreen Glacier case (Spitsbergen) ||87|
12 ноября 2011 г.
ACOUSTIC STUDIES OF ABLATION LAYER OF POLAR GLACIER: THE ALDEGONDABREEN GLACIER CASE (SPITSBERGEN)
Spectrograms of acoustic emission signals (AE) in the ablation layer of the Aldegondabreen Glacier (Western Spitsbergen) in the period of intensive melting (July-August 2011) depending on the intensity of solar flux and temperature, as well as quasi-static and dynamic effects of local load created by rigid spherical indenter and bending of the ice key have been investigated. Effect of cracks in ablation layer on the parameterts of elastic waves propagation have been evaluated. Also the dynamic hardness of ice, critical stress intensity factor KIC, and structure of the surface ice layer to a depth of 0.7 m have been studied. Specific techniques and devices have been developed for measuring: (1) the characteristics of the frequency-amplitude spectrum of AE in the frequency range from 15 Hz to 20 kHz, (2) the dynamic hardness of ice and the critical stress intensity factor directly on the glacier, in particular the spherical indenter with a piezoelectric accelerometer and the penetrometer with digital indicator. The characteristic shapes of AE signals other than the well-known ones in fracture mechanics of structural materials have been recorded. The thickness of ablation layer has been determined (0.4 m), its acoustic performance, hardness, structural features and possible sources of acoustic emission have been evaluated. A number of methodological issues related to acoustic emission (AE) technique application for the deformation studies and as a basis for development of the remote and field glacier ice observation system has been discussed.
Keywords: Glacier ablation, physical and strength characteristics of the upper layer of ice, structure, methods of studies.
| ||I.E.Frolov, I.M.Ashik, G.A.Baskakov, S.A.Kirillov. The Russian marine research in the Arctic: the past and the future ||99|
11 ноября 2011 г.
I.E.FROLOV, I.M.ASHIK, G.A.BASKAKOV, S.A.KIRILLOV
THE RUSSIAN MARINE RESEARCH IN THE ARCTIC: THE PAST AND THE FUTURE
This paper highlights the Russian research activities in the Arctic Basin and marginal arctic seas. The information on the major marine expeditions carried out in the high latitudes since 17th century, their results and general conclusions are reported. The key attention is paid to the latest expeditions including those realized under the umbrella of International Polar Year 2007/08. The results obtained during IPY period is especially interesting since the drastic changes in physical, chemical and sea-ice environments are recently evident in the Arctic.
Keywords: Arctic Ocean, Arctic Seas, field researches, ice drift station, research vessel, International Polar Year, oceanology station, water temperature, water salinity, ice conditions, water circulation.
| ||L.M.Savatyugin. Life of Rudolf Lazarevitch Samoilovitch. On the 130th birthday anniversary ||112|
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