scholarly journals On the relationship of the extrema of lunar-solar tidal influences and seismic events

2020 ◽  
Vol 196 ◽  
pp. 02022
Author(s):  
Elena Bataleva ◽  
Ksenia Nepeina
Keyword(s):  
Experimental Data ◽  
Tien Shan ◽  
Seismic Events ◽  
Geological Environment ◽  
Tidal Effects ◽  
Seismic Regime ◽  
Time Frequency ◽  
Relationship Of ◽  
The Relationship ◽  
Northern Tien Shan

The paper considers experimental data obtained at stationary and regime points of magnetotelluric monitoring on the territory of the Bishkek geodynamic proving ground (Northern Tien Shan). The studies performed indicate the relationship of variations in the electromagnetic and seismic fields, lunar-solar tidal effects, seismic regime with the processes of fracturing. The results of the time-frequency analysis of the response of the geological environment to earthquakes in the electromagnetic field are presented, the features of manifestation depending on the location of the hypo-and epicenters of seismic events and their magnitude are considered. A number of responses in geophysical fields to remote and regional earthquakes of 2010-2020 with an energy class from 8 to 12 and their relationship with the extremes of lunar-solar tidal effects are considered.

scholarly journals On the question of the relationship of variations in geophysical fields, lunar-solar tidal effects and seismic events

2019 ◽  
Vol 127 ◽  
pp. 02019
Author(s):  
Elena Bataleva
Keyword(s):  
Tien Shan ◽  
Seismic Events ◽  
Tidal Effects ◽  
Geophysical Fields ◽  
Instrumental Observations ◽  
Solar Tide ◽  
Time Variations ◽  
Relationship Of ◽  
The Relationship ◽  
Made In

Based on the results of instrumental observations made in the Tien Shan, the interrelation of time variations of a number of geophysical fields and seismic events is established. According to the results of the correlation analysis, it was concluded that the fault zones are characterized by significantly higher variations of geophysical fields, an intense response to weak external influences in the form of a solid moon-solar tide.

scholarly journals On the dynamics of the electromagnetic parameters of the Northern Tien Shan lithosphere

2021 ◽  
Vol 254 ◽  
pp. 03004
Author(s):  
Elena Bataleva
Keyword(s):  
Electromagnetic Field ◽  
Deep Structure ◽  
Wide Frequency Range ◽  
Tien Shan ◽  
Seismic Events ◽  
Kyrgyz Republic ◽  
Electromagnetic Parameters ◽  
Regional Seismicity ◽  
Time Frequency ◽  
Northern Tien Shan

The results of geophysical monitoring of seismically hazardous regions are of undoubted interest for studying the deep structure of the lithosphere, regional seismicity, modern geodynamics, etc. The work used experimental material, including the results of magnetotelluric monitoring and the catalogs of the KNET (Kyrgyzstan Telemetered Network), KRNET (Kyrgyz Republic Digital Network) and ISC (International Seismological Center) networks obtained in the seismically active zones of the Bishkek Geodynamic Proving Ground (Northern Tien Shan). The analysis of electromagnetic monitoring results of the Northern Tien Shan seismic generating zone was carried out in a wide frequency range. The data on the parameters of the electromagnetic field of the Earth’s crust in the Northern Tien Shan are generalized and systematized. Based on the analysis of these data, the dependence of the response of seismic events in electromagnetic parameters on the distance of earthquake epicenters was studied. The most likely reason for the occurrence of anomalous changes in the electromagnetic field is the activation of deformation processes during the preparation of strong earthquakes. The results of the time-frequency analysis are presented and the features of manifestation are considered depending on the location of the hypoand epicenters of seismic events and their magnitude. Regularities have been established in the behavior of tipper variations for remote and regional earthquakes for the first quarter of 2016 with an energy class from 6 to 10.

Calculus of the Relationship of the Cutting Moment at Drilling of the Stainless Steel X15CrNiSi20-12

2015 ◽  
Vol 760 ◽  
pp. 469-474 ◽  
Author(s):  
Aurelian Vlase ◽  
Ovidiu Blăjină ◽  
Marius Iacob
Keyword(s):  
Experimental Data ◽  
Stainless Steel ◽  
Mathematical Software ◽  
Technical Literature ◽  
Technical Research ◽  
Analytic Relationship ◽  
Subsequent Processing ◽  
Manufacturing Activity ◽  
Relationship Of ◽  
The Relationship

This paper studies the cutting moment at drilling of the stainless steel X15CrNiSi20-12. The structure of the cutting moment relation was modified with respect to the relation available in the technical literature for common steels. The tool speed was included in the calculus relation. The experimental data and their subsequent processing represent the original contributions of the authors to the estimation of polytropic exponents and to the assessment in terms of structure of the calculus relation of the cutting moment. The paper also contains graphs for the variation of the cutting moment with parameters of the cutting technology. The graphs are drawn based on the analytic relationship of the cutting moment, obtained in the paper, using the mathematical softwareMaple. The results presented in this study can be taken into consideration in the educational studies and in the theoretical technical research. Also, they can be readily implemented in the manufacturing activity. Our further studies aim these problems for another steels classes.

High Frequency Response of Beams

1975 ◽  
Vol 42 (4) ◽  
pp. 805-808 ◽  
Author(s):  
R. P. Parker ◽  
V. H. Neubert
Keyword(s):  
Experimental Data ◽  
High Frequency ◽  
Rates Of Convergence ◽  
Series Solutions ◽  
Timoshenko Theory ◽  
High Frequency Response ◽  
Lateral Response ◽  
Mode Solution ◽  
Relationship Of ◽  
The Relationship

In developing the relationship of the normal mode solution for a vibrating rod to the pyrotechnic shock problem, a detailed analysis is presented using the Timoshenko theory to obtain the transient lateral response of a cylindrical rod with free ends to a short duration half sine pulse of either moment or shear applied to one end. Two different series solutions are used and the rates of convergence are compared near the boundary. Results are compared with experimental data.

Study on the Relationship of the Quantity of CO2 Produced and the Wind Speed

2014 ◽  
Vol 881-883 ◽  
pp. 1638-1641
Author(s):  
Xian Long Sun ◽  
Er Xin Gao ◽  
Hong Fen Zhang ◽  
Qiang Wang ◽  
Li Juan Li
Keyword(s):  
Experimental Data ◽  
Wind Speed ◽  
Coal Seam ◽  
Coal Mine ◽  
Laboratory Experiments ◽  
Spontaneous Combustion ◽  
Geothermal Heat ◽  
Research Results ◽  
Relationship Of ◽  
The Relationship

Based on the geological and the experimental data of the13#coal seam of Sun-Cun Coal Mine, the relationship curve between the geothermal heat in Sun-Cun coal mine and experimental wind speed has been fit out.According this and the laboratory experiments,the relational expression between the quantity of CO2 produced in the period of spontaneous combustion and the wind speed in the coal mine has been developed. The research results show that when the wind speed exceeds 2m/s,the quantity of CO2 produced has a sharp rising tendency.

Relationship between Strain and Velocity for Ground Vehicle Vibration

2012 ◽  
Vol 55 (1) ◽  
pp. 57-67 ◽  
Author(s):  
George White
Keyword(s):  
Experimental Data ◽  
Data Set ◽  
Ground Vehicle ◽  
Time Frequency ◽  
Vibration Data ◽  
Strain Data ◽  
The Relationship ◽  
Vehicle Platform ◽  
Made In

This paper uses experimental vibration data to evaluate the relationship between strain and velocity on a ground vehicle platform. The data also are used to compare the acceleration and the strain. Comparisons are made in the time, frequency, and damage domains. The results clearly show the strain data are more closely related to the vibratory velocity than to the acceleration, but the analysis is complicated somewhat by characteristics of the experimental data set.

Research Regarding the Relationship of the Axial Cutting Force at Drilling of the Stainless Steel X15CrNiSi20-12

2014 ◽  
Vol 657 ◽  
pp. 3-7
Author(s):  
Ovidiu Blăjină ◽  
Vlad Darie ◽  
Aurelian Vlase ◽  
Marius Iacob
Keyword(s):  
Experimental Data ◽  
Stainless Steel ◽  
Cutting Force ◽  
Mathematical Software ◽  
Technical Literature ◽  
Technical Research ◽  
Force Relation ◽  
Manufacturing Activity ◽  
Relationship Of ◽  
The Relationship

This paper studies the cutting force at drilling of the stainless steel X15CrNiSi20-12. The structure of the cutting force relation was modified with respect to the relation available in the technical literature for common steels. The tool speed was included in the calculus relation. The experimental data and their subsequent processing represent the original contributions of the authors to the estimation of polytropic exponents and to the assessment in terms of structure of the calculus relation of the cutting force. The paper also contains graphs for the variation of the cutting force with parameters of the cutting technology. The graphs are drawn based on the analytic relationship of the cutting force, obtained in the paper, using the mathematical softwareMaple. The results presented in this study can be taken into consideration in the educational studies and in the theoretical technical research. Also, they can be readily implemented in the manufacturing activity. Our further studies aim these problems for another steels classes.

Study on Crystallization Kinetics of Gypsum Prepared by Bittern under 30oC and Different Stirring Speed

2014 ◽  
Vol 962-965 ◽  
pp. 731-735
Author(s):  
Bi Jun Luo ◽  
Dan Wu ◽  
Hai Hong Wu ◽  
Tao Wang ◽  
Xi Ping Huang
Keyword(s):  
Experimental Data ◽  
Crystallization Kinetics ◽  
Calcium Sulfate ◽  
Particle Number ◽  
Particle Number Density ◽  
Crystal Growth Rate ◽  
Number Density ◽  
Relationship Of ◽  
The Relationship ◽  
Kinetics Of

Crystallization kinetics experiment of calcium sulfate dehydrates, which is prepared by bittern under 30oC and different stirring speed conditions, is carried out. According to the results of the experimental data, the relationship of nucleus particle-number density n0 and crystal growth rate G with the residence time, temperature and the stirring speed is summarized. Also, the crystallization kinetics formula under 30oC and different stirring speed is given.

scholarly journals Modified data on geoeffective solar flares and seismic noise variations

2021 ◽  
Vol 929 (1) ◽  
pp. 012033
Author(s):  
N A Sycheva ◽  
L M Bogomolov
Keyword(s):  
Standard Deviation ◽  
Solar Flare ◽  
Solar Flares ◽  
Seismic Noise ◽  
Tien Shan ◽  
Output Data ◽  
Regional Seismicity ◽  
Eruptive Event ◽  
The Relationship ◽  
Northern Tien Shan

Abstract The problem of the relationship between strong magnetic swarms caused by solar flares and variations in seismicity is considered. The data on the temporal dependences of the parameters of seismic noise (average level, and standard deviation, RMS) recorded by the stations of the KNET seismic network have been used as the output data of monitoring the territory of the Bishkek geodynamic proving ground (Northern Tien Shan). The signatures of the influence of a magnetic swarm that occurred after an ultra-strong solar flare on September 6, 2017 have been established. The results obtained on the increase in seismic noise after this super-strong eruptive event are consistent with the results of studies on the influence of magnetic swarms on changes in regional seismicity.

scholarly journals KAZAKHSTAN

2019 ◽  
pp. 131-138 ◽  
Author(s):  
N. Neverova ◽  
N. Mikhailova ◽  
Inna Sokolova
Keyword(s):  
Urban Areas ◽  
Seismic Energy ◽  
Focal Mechanisms ◽  
Tien Shan ◽  
Seismic Events ◽  
Ministry Of Education ◽  
Geophysical Research ◽  
Seismic Arrays ◽  
The Republic ◽  
Northern Tien Shan

In 2013, seismic monitoring in Kazakhstan was conducted by two organizations: the Seismological Experience-Methodical expedition of the Ministry of Education and Science of the Republic of Kazakhstan (SEME), and the Institute of Geophysical Research of the Ministry of Energy of the Republic of Kazakhstan (IGR). The station network consists of three-component stations and seismic arrays. The work presents detailed information on seismic observation networks. The catalogue of seismic events of Kazakhstan is made by da-ta of above mentioned Organizations. It includes 1036 earthquakes with energy class КР=6.6–14.7. The catalog contains several additional sheets with Attachments: Microseismic data on felt earthquakes, parameters of focal mechanisms of 55 earthquakes, information on coordinates of 29 urban areas with felt shakes, parameters of 1123 aftershocks, and two forshocks of Saryzhas (Narynkol) earthquake in the range of energy classes КР=4.5–11.8. Two maps of earthquake epicenters are shown in the paper: for the whole Kazakhstan territory with КР≥8.6 and for Northern Tien Shan territory with КР≥6.6. The largest earthquake of the year was the Saryzhas earthquake that occurred in Northern Tien Shan on January 28, MS=6.0, КР=14.7. The earthquake was felt on the territory of Kazakhstan and China and was followed by numerous aftershocks. For the first day, only its number exceeded 500. It was noted that the total released seismic energy in 2013 exceeded significantly the same parameter of 2012.

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