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51.
S.B. Lavrov M.K. Bandman K.P. Kosmachev G.V. Sdasyuk S.S. Artobolevsky L.M. Shevchenko 《Geoforum》1979,10(3):333-344
A major field of research since the 1920s has been methods and theories of economic regionalization. The territorial-production complex is now recognized as a key developmental tool within the framework of economic-planning regions. Recently, there has been a more marked growth of study into problems of natural-resource development, social progress and change in the U.S.S.R. as well as into the spatial structure of other nations, particularly other socialist countries and non-socialist developing countries. 相似文献
52.
53.
Analysis of sea current velocities showed that the principal flow has a southeastern horizontal direction and downward vertical direction. This flow pattern persisted throughout the observational period. Abrupt temperature drops and water salinity rises are indicative of the near-shore upwelling that was recorded twice during this period. A steady tendency toward a decrease in oxygen concentration and an increase in pH was observed during the observations. 相似文献
54.
V. N. Lukashin A. A. Klyuvitkin V. A. Bobrov O. M. Dara V. P. Shevchenko 《Oceanology》2018,58(5):717-726
The paper presents new information on the chemical composition of the insoluble aerosol fraction in the atmospheric surface boundary layer of different climatic zones of the North Atlantic (temperate humid, arid and semiarid, equatorial humid). The material for this study was collected during 12 expeditions. Nylon meshes were used to catch aerosols along the course of vessels. Aerosols above the North Atlantic consist of lithogenic, biogenic, and anthropogenic particles transported from different regions, which governs the differences in their concentrations and mineral and chemical compositions. Significant (by more than an order of magnitude) enrichment of aerosols in Cu, Cd, Zn, Pb, Sb, and Se is related to anthropogenic atmospheric pollution. 相似文献
55.
This paper describes a method for calculating the station corrections to earthquake energy class and the acoustic impedance based on records of earthquake codas in the 0.8–1.8 Hz frequency band. The calculation is based on measurements of the relative coda level at two stations, with one of the two being used as the reference. The data were recorded by digital seismometers: CMG-3TB (GURALP), CMG-5TD (GURALP), CMG-6TD (GURALP), and GMS-AC-73i HHV (GeoSIG). We present estimates of class corrections for the Kamchatka network of seismic stations. 相似文献
56.
Izvestiya, Physics of the Solid Earth - The style of the seismotectonic deformation of the Earth’s crust in the Caucasus and its immediate surroundings corresponds to the thrust setting with... 相似文献
57.
The paper presents a comparative analysis of the intrinsic noises of seismometers operating at Kamchatka seismic stations: CMG-3TB (GURALP), CMG-5TD (GURALP), CMG-6TD (GURALP), GMS-AC-73i HHV (GeoSIG), SM3os (GEOTECH+), S5Sos (KF GS), and SM3kv. It is shown that the dynamic range of the seismometers is narrower at low frequencies in the area of weak signals. 相似文献
58.
Shevchenko V. I. Lukk A. A. Leonova V. G. 《Izvestiya Atmospheric and Oceanic Physics》2020,56(11):1337-1345
Izvestiya, Atmospheric and Oceanic Physics - Based on the available geological and geodetic data, it has been established that the structures of the Alpine–Himalayan–Indonesian mobile... 相似文献
59.
V. S. Shevchenko K. N. Grankin M. A. Ibragimov S. Yu. Melnikov S. D. Yakubov 《Astrophysics and Space Science》1993,202(1):121-136
Light curves of 78 Herbig Ae/Be stars were studied by digital analysis methods. Twenty-five thousand photoelectricUBVR observations of these stars were made by the authors in 1978–1990. A star was usually observed once a night. The stars were observed between 70 and 770 nights and on average each star was observed at more than 300 nights. The mean epoch for a star is 5 years. A morphologic classification of the light curves is suggested. The method of digital analysis are briefly described. To estimate the reliability of cyclic phenomena discovered in our study, a large number of them has been examined. 相似文献
60.
S. G. Skolotnev N. N. Turko S. Yu. Sokolov A. A. Peyve N. V. Tsukanov S. Yu. Kolodyazhnyi N. P. Chamov Yu. E. Baramykov A. S. Ponomarev V. N. Efimov A. E. Eskin V. V. Petrova L. A. Golovina V. Yu. Lavrushin E. A. Letyagina E. P. Shevchenko K. V. Krivosheya L. V. Zotov 《Doklady Earth Sciences》2007,416(1):1037-1041