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The results of the work of the global observation network are considered, and a comparative analysis of the data of various coronal observatories is performed. The coronal activity index has been reconstructed for the period 1939–2016 based on the data of various observatories in Kislovodsk system. For this purpose, the corona daily intensity maps from the Sacramento Peak and Lomnický ?tít observatories according to the Solar-Geophysical Data journal have been digitized; they supplement the data of other observatories. The homogeneity and continuity of the corona observations at the Kislovodsk station, including activity cycle 24, is confirmed. Unfortunately, the only observatory at present that continues observation of the spectral corona in Fe XIV 5303 Å and Fe XIV 6374 Å lines is the Kislovodsk astronomical station Mountain Astronomical Station (MAS) of the Central Astronomical Observatory, Russian Academy of Sciences (Pulkovo). The data on the combined corona in 5303 Å line are analyzed. It is shown that there is a high correlation of the intensity index of green corona with solar radiation measurements in the vacuum UV region. Data on the beginning of the new 25th activity cycle in the corona at high latitudes are presented. 相似文献
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The level of scattered radiation is analyzed using data of diurnal solar coronograph observations at the Mountain Astronomic Station in the period 1957?C2010 around coronal spectral lines at 5303 ? and 6374 ?. The observations were performed near the solar limb and were normalized by the intensity of the solar disk center. The measurements revealed variations on different timescales: seasonal variations, local maxima on timescales of a few years, and long-term trends. The local changes in the level of scattered radiation were found to be probably due to volcanic eruptions. An analysis revealed a tendency towards an increased in scattered radiation by approximately 40% during the last 50 years. The variations in the level of scattered radiation are compared with the concentration of atmospheric aerosols. The long-term growth in scattered radiation compares well with changes in the Earth??s near-surface temperature and is possibly associated with global climate change. 相似文献
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T. A. Aliev A. A. Alizade G. D. Etirmishli G. A. Guluev F. G. Pashaev A. G. Rzaev 《Seismic Instruments》2011,47(1):15-23
An intelligent system for monitoring anomalous seismic processes intended for predicting the beginning of an earthquake by
standard ground-based stations is presented. The problem is solved by analyzing the seismoacoustic signals coming from deep
layers of the Earth. The signals are detected by acoustic sensors placed at the mouths of deep suspended wells. 相似文献
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The model of a black hole rotating in an external magnetic field is considered. The mechanisms of the energy extraction from the black hole in terms of the effective ergospheres for charged particles are described. It is shown that the external magnetic field essentially influences the boundaries of the effective ergospheres and the superradiance threshold. 相似文献
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The morphometric and anthropogenic risk factors of floods in a typical lowland Lower Kura R. are studied. The isolation of the channel from the floodplain is the major cause of floods in the river. The high channel tortuosity makes the flow turbulent. In addition, the high sediment concentration, the turbid and disperse character of the liquid, the gentle bed slope, and the alluvial character of the soil underlying the bed and embankments contribute to the vertical and horizontal dynamics of the channel. 相似文献
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Novichkova E. A. Reykhard L. E. Belyaev N. A. Aliev R. A. Starodymova D. P. Kudryavtseva E. A. 《Oceanology》2020,60(5):664-681
Oceanology - The lithological and mineralogical characteristics of sea surface sediments, composition of microfossils, contribution of organic matter, and element composition have been studied in a... 相似文献
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T. A. Aliev A. M. Abbasov G. G. Mamedova G. A. Guluev F. G. Pashaev 《Seismic Instruments》2013,49(1):64-80
Robust noise technologies for analyzing a seismic acoustic signal that allow using its noise as a carrier of information at the beginning of abnormal seismic processes preceding an earthquake are proposed. A station which receives seismic acoustic signals from the deep strata of the earth with the help of 3–6 km-deep steel bores of dormant oil wells has been designed based on this technology. It monitors the beginning of the latent period of the earthquake development. The experiments carried out at these stations on Qum Island in the Caspian Sea since May 1, 2010 and in the town of Shirvan in the southern region of Azerbaijan since November 20, 2011 confirmed the reliability and validity of the monitoring results and identification of the earthquake in the radius of 300–500 km with a 10–15 h lead as compared to conventional seismic stations. 相似文献
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The influence of climate changes in Eurasia on the Caspian Sea level fluctuations in the Holocene is studied on the basis
of historical data. The correspondence of the Late Khvalyn transgression to the time of the thawing of the European (Scandinavian)
ice cap is revealed as well as that of the climatic optimum of the Holocene to the Boreal period (10-8 thousand years ago).
In the next New-Caspian epoch, the Caspian Sea regression occurred. In the historical time, the maxima of cold snaps and Caspian
Sea level are registered every five centuries. 相似文献