Characteristics of Low-Frequency Radiation Excited by the Impact of an Oscillating,High-Frequency Beam on the Ionosphere According to In Situ Measurements     

Belov  A. S. 《Geomagnetism and Aeronomy》2022,62(1-2):116-124

Geomagnetism and Aeronomy - The results of experimental studies of the characteristics of low-frequency (LF) radiation excited by the impact of two frequency-shifted, unmodulated pump waves emitted...  相似文献   

Solar-Activity Index for the E-Layer Critical Frequency at Middle Latitudes     

Deminov  M. G. 《Geomagnetism and Aeronomy》2022,62(1-2):66-70

Geomagnetism and Aeronomy - Based on an analysis of data from the midlatitude ionospheric stations, it is found that the P = 0.5(F1 + F81) index is an optimal solar-activity index for the daily...  相似文献   

Dependence of D-Region Perturbations of the Midlatitude Ionosphere on the Spectral Composition of the X-Ray Radiation of Solar Flares According to Experimental Data     

Gavrilov  B. G.  Poklad  Yu. V.  Ryakhovsky  I. A.  Ermak  V. M. 《Geomagnetism and Aeronomy》2022,62(1-2):98-103

Geomagnetism and Aeronomy - An experimental study was made of the dependence of the electron-density perturbations in the D?regions of the midlatitude ionosphere during solar flares on the...  相似文献   

Dependence of the Occurrence of Coronal Mass Ejections on the Initial Length of the Eruptive Prominence     

Filippov  B. P. 《Geomagnetism and Aeronomy》2022,62(3):151-158

Geomagnetism and Aeronomy - A model of the eruption of a magnetic flux rope with ends rigidly fixed in the photosphere is analyzed. Long and short flux ropes exhibit different scenarios of...  相似文献   

Verification of Plasma Chemical Models of the Ionospheric D Region of the According to Radiophysical Data from Mikhnevo Geophysical Observatory     

Bekker  S. Z. 《Geomagnetism and Aeronomy》2022,62(3):237-245

Geomagnetism and Aeronomy - The results of a comparison of three different plasmochemical models of the ionospheric D region during C- and X-class X-ray flares are presented. Four-, five- and...  相似文献   

Numerical determination of pressure-dependent effective thermal conductivity in Berea sandstone     

Mirko Siegert  Marcel Gurris  Claudia Finger  Erik H. Saenger 《Geophysical Prospecting》2022,70(1):152-172

In this paper, the methods of digital rock physics are applied to determine pressure-dependent effective thermal conductivity in rock samples. Simulations are performed with an in-house three-dimensional finite volume code. In the first step, four numerical models are derived from a given tomographic scan of Berea sandstone. Consequently, simulations of the thermal conductivity at ambient conditions are performed and validated with experimental data. In a second step, a new workflow for the determination of the pressure-dependent thermal conductivity in rock samples is elaborated, tested and calibrated. Results originating from the derived workflow show very good agreement with experimental data.  相似文献   

Simulation of Medium Wave Propagation in the Magnetosphere     

Blagoveshchensky  D. V.  Maltseva  O. A. 《Geomagnetism and Aeronomy》2022,62(1-2):58-65

Geomagnetism and Aeronomy - A model of the medium of the ionosphere and magnetosphere, including the distributions of the concentrations and temperatures, collision frequencies, and magnetic field...  相似文献   

Solar-Activity Indices for the Ionosphere in Cycles 23 and 24: the Form of Cycles     

Deminov  M. G.  Deminov  R. G.  Nepomnyashchaya  E. V. 《Geomagnetism and Aeronomy》2022,61(1):S75-S79

Geomagnetism and Aeronomy - Analysis of the features of the form of low solar cycles 23 and 24 for the solar-activity indices (F is the solar radio flux at a wavelength of 10.7 cm, Rz and Ri are...  相似文献   

Solar Activity,Galactic Cosmic Ray Variations,and the Global Seismicity of the Earth     

Khegai  V. V.  Legen&#;ka  A. D.  Abunin  A. A.  Abunina  M. A.  Belov  A. V.  Gaidash  S. P. 《Geomagnetism and Aeronomy》2022,61(1):S36-S47

Geomagnetism and Aeronomy - A comparative analysis of the correlation between the number of strong (magnitude M ≥ 5.0), crustal (hypocenter depth 0 ≤ h ≤ 60 km) earthquakes per...  相似文献   

Increased Microwave Radiation Brightness as a Sign of Flare-Producing Active Regions Based on Observations of NOAA Active Region 12371     

Peterova  N. G.  Topchilo  N. A.  Kurochkin  E. A. 《Geomagnetism and Aeronomy》2022,61(1):S24-S35

Geomagnetism and Aeronomy - Methods to predict solar flares based on observations in the microwave range with radio telescopes with high angular resolution continue to be developed. The results are...  相似文献