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An attempt is made at the statistical analysis of small-scale disturbances in the stratosphere and mesosphere with the aid of meteorological rocket observations at many stations from 77°N to 8°S for several years.By applying a high-pass filter to daily rocket data in the height range 20–65 km, wind and temperature fluctuations with characteristic vertical scales close to or less than 10 km are obtained, which are considered to be due to internal gravity waves. Results are expressed in terms of parameters which tend to emphasize smallscale vertical fluctuations and which should provide qualitative measures of gravity wave activity.It is found that the gravity wave activity shows a notable annual cycle in higher latitudes with the maximum in wintertime, while it shows a semiannual cycle in lower latitudes with the maxima around equinoxes. It is also found from the standard deviation around the monthly mean that the temporal variability of gravity waves is very large.  相似文献   

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A survey of Soviet research focuses on climatic fluctuation and its causes, the geographical aspects of hydrology, and work on Arctic, Antarctic and mountain glaciation. The Physical-Geographic Atlas of the World, published in 1964, is used as an illustration of the result of Soviet research in these fields. Problems of transformation of the water budget and of climate are viewed as research fields of the future.  相似文献   

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A review article of recent Soviet futurological articles in the geographical literature, suggesting the increased activity of Soviet geographers in the prognostication of the environmental effects of human activity. Several of the papers under review appeared in Soviet Geography: Review and Translation.  相似文献   

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Main features of spatial distribution and time variations of meteorological parameters in the Southern hemisphere at altitudes 25–80 km are reviewed on the basis of zonal empirical models revised in 1982. Meridional distribution and seasonal variations are analysed. For comparison purposes with the Northern hemisphere, a model developed by Cole and Kantor in 1978 is used. It is revealed that the compilation of new models of the Southern hemisphere atmosphere has not resulted in substantial revision of hemispheric-structure outlined earlier in studies conducted in the Central Aerological Observatory. Meridional distribution of the parameters in summer is characterized by higher values of temperature, pressure and density gradients in the stratosphere of the Southern hemisphere than in that of the Northern hemisphere. This resulted in greater advancement of the core of the summer-time easterly (low towards the equator in the Southern hemisphere than in its northern counterpart. In winter, meridional temperature gradients in the middle stratosphere are greater in the Southern hemisphere than those in the Northern hemisphere, however, rapid attenuation of the gradients with height is observed in the Southern hemisphere, and above 35–40 km they become negative near 50–60°S, in contrast to positive values typical for the Northern hemisphere stratosphere. In the wind field, specific features of the Southern hemisphere westerly flow are high intensity and relatively low altitude of the maximum speed (as compared to the Northern hemisphere).The phases of the annual temperature wave at low latitudes are similar south and north of the equator; south of 30°S a reversal of the phase is observed. The semi-annual oscillation of temperature and wind is less pronounced in middle and high latitudes of the Southern hemisphere than in the Northern hemisphere.The origin of the primary differences between the hemispheres is related mainly to lower intensity of large-scale stratospheric processes in the Southern hemisphere as compared to those in the Northern hemisphere, which is confirmed by values of the standard deviation of the parameters in the two hemispheres.In summer, temperature and pressure fields based on satellite data are symmetric relative to the poles in both hemispheres. In winter, the distortion of the mean pressure field in the mesosphere may be as great in the Southern as in the Northern hemisphere.  相似文献   

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Soviet dilemmas     
Archie Brown and Michael Kaser (eds), Soviet Policy for the 1980s, London, Macmillan, 1982, pp.282. £7.95 (paper)

David Childs, The GDR: Moscow's Ally, London, Allen & Unwin, 1983, pp.346. $19.95 (paper)

Ferenc Fehér and Agnes Heller, Hungary 1956 Revisited. The Message of a Revolution — a Quarter of a Century After, London, Allen & Unwin, 1983, pp.174. $29.95 (cloth)

Paul G. Lewis (ed.) Eastern Europe: Political Crisis and Legitimation, London & Sydney, Croom Helm, 1984, pp.202. $33.95 (cloth)

Borys Lewytzhyj, Politics and Society in Soviet Ukraine 1953–1980, Edmonton, Canadian Institute of Ukrainian Studies, 1984, pp.219. Can. $6.95 (paper)

Roy Medvedev, Khrushchev, Oxford, Blackwell, 1982, pp.292. $15.95 (paper)

Zhores Medvedev, Andropov: His Life and Death, Oxford, Blackwell, 1984, pp.255. $12.95 (paper)  相似文献   


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A review of the last 50 years finds that the traditional breakdown of Soviet cartography into its specialized research disciplines no longer conforms to current needs. Soviet cartography has been divided historically into mathematical cartography, map science (the study of maps and their uses), map compilation and editing, map design and production. A growing specialization in cartography by thematic disciplines (geomorphic mapping, agricultural mapping, etc.) with widely differing requirements and principles of compilation and editing suggests the need for a restructuring of the research disciplines. In addition to mathematical cartography, concerned with map projections and map measurements, the new structure would include: technical cartography (the study of source materials, map design and production); natural-historic cartography (principles of compilation and editing of maps of the physical environment), and socioeconomic cartography (concerned with the mapping of human phenomena).  相似文献   

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This paper is a report on the Soviet cultural legacy in Tajikistan. It takes an in-depth look at the institutions that were created to manage artistic and cultural activities, budgeting, training and promotion under the Soviets. The paper suggests that, except for art and culture related to religion, other genres were enhanced, albeit with an emphasis on ideology. However, independence in 1992, along with the civil war that erupted immediately afterwards, had a devastating effect on art and culture in Tajikistan and on the lives of the artistic community. The paper is part of a comprehensive study of post-Soviet art and culture in Central Asia in the critical years immediately after the Soviet collapse. For this study, over one hundred interviews were conducted with officials, musicians, dancers, writers and singers, as well as visits to centers of art and culture in those republics.  相似文献   

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苏区时期的"赤白对立"--阶级革命中的非阶级现象   总被引:2,自引:0,他引:2  
黄道炫 《史学月刊》2005,(11):38-46
赤白对立是指苏维埃区域与非苏维埃区域之间的对立,出现于苏区周边地区,它不是由土地革命加剧的阶级间的对立,而是一种非阶级的由多种因素引发的以地域为中心的冲突。赤白对立的出现,既有中共自身的原因,也有国民党方面的推波助澜,还缘于社会革命与社会组织间的内在冲突。就中共方面看,前期和后期造成这一现象的原由也不尽相同。赤白对立给中共开展革命造成很大不利影响,某种程度上成为苏维埃时代的一个痼疾。  相似文献   

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