排序方式： 共有47条查询结果，搜索用时 171 毫秒
21.
V. V. Adushkin A. A. Spivak V. A. Kharlamov 《Izvestiya Physics of the Solid Earth》2018,54(6):859-871
The results of processing and analyzing the instrumental observations of the Earth’s magnetic field at the Geophysical Observatory Mikhnevo of the Institute of Geosphere Dynamics of the Russian Academy of Sciences (IGD RAS) for 2010–2015 are presented. Quasi-harmonic components with the periods close to the lunar–solar tidal waves are revealed in the spectra of geomagnetic variations over a period of 0.4 to 30 days. The elliptical S1 tidal wave which is detected in the geomagnetic variations has modulations with periods of 1/3, 1/2, and 1 year. The spectra of the geomagnetic variations contain peaks corresponding to the free oscillations of the Earth. The analysis of the time series of the magnetic field for the period of the strong earthquakes in the absence of geomagnetic disturbances revealed the fine structure of the Earth’s fundamental spheroidal mode 0S2, which splits into five singlets. The established features of the spectrum of geomagnetic variations are helping the development of the new method for studying the deep structure of the Earth and the properties of the inner geospheres for estimating the viscosity of the Earth’s outer core and dynamics of the current systems in the outer (liquid) core, as well as for exploring, with the use of empirical data, the general regularities governing the regimes of energy exchange processes in the geospheres. 相似文献
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Geomagnetism and Aeronomy - The results of instrumental observations of the electric-field strength in the conditions of Moscow in 2014–2018 are presented and analyzed. The spectral... 相似文献
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Manifestation of the 2011 Great Tohoku Tsunami on the Coast of the Kuril Islands: A Tsunami with Ice
Victor Kaistrenko Nadezhda Razjigaeva Andrey Kharlamov Alexander Shishkin 《Pure and Applied Geophysics》2013,170(6-8):1103-1114
The tsunami generated by the 2011 Tohoku Earthquake (M w = 9.0) reached maximum heights of about 5 m along the coast of the Kuril Islands. The most essential feature of this event was sea ice about 0.5 m thick moved by the ocean water. The tsunami did not cause any essential damage on the Kuril Islands, but significantly affected coastal zones and produced interesting effects. The problem of a tsunami accompanied by marine ice is discussed and illustrated with photos. 相似文献
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Spivak A. A. Rybnov Yu. S. Riabova S. A. Kharlamov V. A. 《Doklady Earth Sciences》2021,498(2):487-490
Doklady Earth Sciences - The results of data analysis of instrumental observations of microbaric variations in the atmospheric pressure carried out at the Mikhnevo Geophysical Observatory and at... 相似文献
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V. V. Adushkin A. A. Spivak V. A. Kharlamov 《Izvestiya Physics of the Solid Earth》2012,48(2):104-116
Extraterrestrial forcing of natural environmental processes by gravitational interaction between the Sun, the Moon, and the
Earth is considered. Based on the instrumental data, the main periodical components and cycles are identified in the time
variations of some geophysical fields at the boundary between the Earth’s crust and the atmosphere. Correlation analysis shows
that the lunar-solar tides are the key factor responsible for diurnal and quasi-biweekly variations in the ground electric
field, radon emanation, water level in wells, and microseismic vibrations. The tidal influence on the various-scale movements
of the blocks of the Earth’s crust is analyzed. In the context of the vertical, lateral, and rotational motion of crustal
blocks, which is very important for the platforms, a new, precession-like type of displacements is revealed. These movements
develop as a result of the nonsynchronous tidal responses of the block and the adjacent interblock gaps or tectonic structures
whose strength and strain properties are different in different directions. 相似文献
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N. G. Razzhigaeva L. A. Ganzey T. A. Grebennikova A. A. Kharlamov Kh. A. Arslanov V. M. Kaistrenko A. O. Gorbunov A. Yu. Petrov 《Russian Journal of Pacific Geology》2017,11(1):34-45
Tsunamis are reconstructed on the basis of distribution of tsunamigenic sediments in coastal lowland sections. Reflections of anomalous tsunamis are recorded in detail in the lacustrine–boggy sections of the Lesser Kuril Ridge, while only fragments of these sediments have been found on the islands of the Greater Kuril Ridge. The distribution and composition of the sediments left by recent large-scale tsunamis (locally documented 1994 and 1894 Shikotan tsunamis and transoceanic 2011 Tohoku tsunami) are analyzed for the purpose of understanding deposition features during large and megatsunamis. Interregional correlation of the events during the last ~2.5 kyr is carried out with estimation of their scales. It is established that large events took place in the 17th and 18th centuries and approximately at 1.0, 1.4–1.6, 1.7–1.8, and 2.0–2.1 ka ago. New data on large tsunami chronology since the Middle Holocene are presented. A unique natural peatland section with abundant tsunamigenic sand layers is studied on the Pacific side of Zelenyi Island (Rudnya Bay), where deposition continued through the entire Holocene. The largest tsunamis which happened on the South Kuril Islands during the last ~7.5 kyr and can be classed as megatsunamis are revealed. 相似文献
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S.?P.?SolovievEmail author Yu.?S.?Rybnov V.?A.?Kharlamov A.?V.?Krasheninnikov 《Geomagnetism and Aeronomy》2017,57(3):335-346
Data on observations of acoustic gravity waves and variations in the electric field strength in the surface layer of the atmosphere are presented. Analysis of the obtained data shows that synchronous variations in the pressure and electric field strength appear with the passage of a weather front, solar terminator, and in some other cases. It is seen that the amplitude of electric field perturbations is approximately proportional to the amplitude of variation in the pressure. A possible mechanism of generating electric field perturbations during the passage of microbaroms has been considered. 相似文献
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M. V. Bolgov M. D. Trubetskova I. A. Filippova M. A. Kharlamov 《Geography and Natural Resources》2017,38(2):139-146
We investigated the precipitation characteristics for the summer period of 2013 on the basis of analyzing the daily precipitation amounts according to observational data from the Russian and Chinese meteostations on the territory of the Amur river basin. An analysis is made of the synchronism in the fluctuations of long-term series of precipitation amounts for two summer months (July and August) by using a modified algorithm for a classification of the fields of hydrometeorological characteristics, such as cluster analysis. The study revealed a poor correlation of precipitation amounts in different parts of the basin. We analyzed the interannual fluctuations in absolute maxima of the consecutive precipitation amounts for different periods of time (from 1 to 30 days). It is shown that precipitation over the summer period of 2013 that caused a disastrous flood in the lower reaches of the Amur were extreme primarily as regards the territory encompassed and the flood duration, which was due to a combination of synoptic processes of a different genesis. It was found that the precipitation amounts for periods shorter than 19 days in 2013 were not extreme in terms of intensity. A comparison was made with the year 1984 when there also occurred a flood on the Amur but not as violent. Parameters of the probability curves for 2013 and 1984 are presented for long-term series of maximum precipitation amounts for the summation period of 7 and 30 days. It is concluded that for calculating the maximum possible precipitation amounts which are necessary for assessing the maximum possible floods, it is appropriate to consider synoptic situations with long-lasting precipitation rather than separate short-lasting storm rains. 相似文献