排序方式： 共有6条查询结果，搜索用时 15 毫秒
1
1.
Yu. B. Bashkuev V. P. Mel’chinov M. G. Dembelov L. Kh. Angarkhaeva D. G. Buyanova V. A. Borsoev 《Geomagnetism and Aeronomy》2006,46(4):507-516
Result of the measurements of the cryolithic zone electrical properties by the radio impedance sounding method are presented. The surface impedance and geoelectric section of the Arctic permafrost have been determined. The experiments have been performed near Cherskii in the continental zone. The surface wave attenuation function is considered. The accuracy of the surface wave field calculations at high latitudes has been estimated based on the local electrical characteristics of the underlying cryogenic medium. The effect of the Arctic Ocean on the operating zone of navigation and communication facilities in the kilometer wave band has been experimentally estimated. 相似文献
2.
A database of continuous measurements of the VLF pulsed flux of the natural electromagnetic field of the Earth (NEMFE) in southern Siberia during the period from March 31, 2008 to the present was created. Analysis of long-term continuous observations has shown that NEMFE diurnal variations have stable seasonal changes. A high interannual correlation coefficient of NEMFE diurnal variations for the same months in 2008–2014 was discovered. The analysis of data from spaced recorders has shown a high degree of spatial correlation, which indicates a single local mechanism of the NEMFE formation. 相似文献
3.
I. B. Naguslaeva Yu. B. Bashkuev Yu. P. Malyshkov D. G. Buyanova 《Journal of Volcanology and Seismology》2008,2(3):184-188
This paper presents the results from long-term observations of parameters of the Earth’s natural impulsive electromagnetic field (ENIEMF) in the VLF range recorded in the Baikal Rift Zone. We consider the “seismic quiescence” effect and examine possible factors responsible for changes in the daily variations of the magnetic component before earthquakes. We demonstrate daily variations of the ENIEMF magnetic component and their correlation to local storm activity during a seismically quiet period. 相似文献
4.
A.V. Lukhnev V.A. San’kov A.I. Miroshnichenko S.V. Ashurkov L.M. Byzov A.V. San’kov Yu.B. Bashkuev M.G. Dembelov E. Calais 《Russian Geology and Geophysics》2013,54(11):1417-1426
Based on multiyear measurements of present-day motions in the central area of the Baikal rift system, new data on the kinematics of horizontal motions, relative horizontal deformation rates, and rotation velocities in the area of junction of the South Baikal, North Baikal, and Barguzin rift basins have been obtained. This area is an intricate structure with two transfer zones: Ol’khon–Svyatoi Nos and Ust’-Barguzin.It is shown that crustal blocks are moving southeastward, normally to the structures of transfer zones and at an acute angle to the Baikal Rift strike, which corresponds to the right-lateral strike-slip extensional faulting along the major structure. The average horizontal velocities increase from 3.0 mm yr–1 in the northern South Baikal basin to 6.5 mm yr–1 in the Barguzin basin. The elongation axes prevailing in the study region are mainly of NW–SE direction. The areas of intense deformations are confined to structures with high seismic activity in the South Baikal and, partly, Barguzin basins. This confirms the existence of a present-day zone of the Earth’s crust destruction in the Baikal rift system, which is the most likely source of strong earthquakes in the future. Two zones with rotations in opposite directions are recognized in the rotation velocity field. Clockwise rotation is typical of structures of N–NE strike (Maloe More basin, southern North Baikal basin, Barguzin Ridge rise). Counterclockwise rotation is determined for NE-striking structures (northern South Baikal basin, southern Barguzin basin). In general, the obtained data show an intricate pattern of present-day horizontal dislocations and deformations in the area of junction of NE- and N–NE-striking rift structures. This suggests left- and right-lateral strike-slip faults, respectively, within them. 相似文献
5.
A. K. Tulokhonov E. Zh. Garmaev Yu. B. Bashkuev Yu. L. Lomukhin V. B. Khaptanov M. G. Dembelov M. V. Slipenchuk B. Ch. Dorzhiev O. N. Ochirov 《Geography and Natural Resources》2018,39(1):39-45
Presented are the results of the winter 2014 radiophysical expedition, within the framework of which the Baikal ice cover was investigated by electromagnetic methods. The primary objectives the expedition were to detect irregularities in the ice cover, such as cracks and thawing steamed holes in the ice, and to determine the ice thickness and structure in the area of the thawing holes by the GPR sounding method. We used in the experiments the OKO-2 ground-penetrating radar (GPR) of the decimeter band and the nanosecond radar with the wavelength of 3 cm. The measurements were made carried out from the Khivus hovercraft and from the UAZ automobile. The ice thickness of Lake Baikal was determined by non-contact electromagnetic measurement methods. Radargrams of reflected signals from the ice cover are presented. Radar patterns of reflected signals from artificial irregularities of the ice cover were obtained by the short-pulse radar method. The concept of radiophysical monitoring is suggested, which provides a means of determining the ice cover parameters of a water body with high spatial resolution. We present an integral approach to investigating the conditions of the ice cover in order to integrate different physicochemical methods for diagnosing the objects studied. A further development of the concept of integrated ice cover research, and the creation of the monitoring network involves solving a number of scientific and engineering tasks that include developing physical models and information and measurement systems as well as the rationale for an integrated monitoring network. 相似文献
6.
Specific features of the geomorphology and hydrology of Selenga River delta are considered. Fractal theory is used to evaluate the fractal dimension of the river delta as a branched structure. The fractal dimension of the planar pattern of the Selenga and Volga deltas are evaluated for the first time using three independent methods. The obtained values are 1.38 and 1.72, respectively. 相似文献
1