Sidorenko The determination of the location of geoelectrical inhomogeneities in the Earth's crust using dual-frequency radioholographic methods. Complicated Pc1 emissions in the late recovery phase of the last strong magnetic storm in September 2017.
LOW ATMOSPHERE, OZONE
Thus, we see that the SSS events were only associated with interplanetary displays of the coronal mass ejections (Sheaths, magnetic clouds and EJECTA) and were virtually not observed during high-speed flows from coronal holes (FAST). Moreover, the considered SSS events demonstrated two types of spatial-temporal dynamics: (a) similar to the.
Correlation relations between parameters of the Solar wind of different types and geomagnetic activity indices for the period 1995-2016
Analysis of methods for estimating equivalent ionospheric current from meridian magnetometer chain data
Simultaneous observations of a substorm by THEMIS and by MAIN camera system in Apatity
A review of dayside diffuse aurora and throat aurora Desheng Han
Lorentzen, Kjellmar Oksavik, Joran, Idar Moen, Lisa, Jane Baddeley (2017), Dynamic Properties of Throat Aurora Revealed by Simultaneous Ground and Satellite Observations, J. Yang (2015), A comprehensive study of diffuse daytime aurora based on optical observations at Yellow River Station, J.
Testing of technique of medium-term forecast for magnetic storms in the solar maximum conditions
The onset of the substorm was accompanied by the large burst flow (BBF) with a speed greater than 500 km/s, lasting about 5 minutes, recorded by two THEMIS satellites (D and E). This type presents the first brief increase in the Z component of the magnetic field (Bz), followed by thinning of the current sheet (decrease in Bz) and oscillation of the magnetic field.
Impulsive disturbances of the geomagnetic field as a cause of induced currents in electric power lines
The second type of dipolarization is related to the reconfiguration of the near-Earth part of the tail currents from the state of a thin layer with an oscillating magnetic field in 40 s to a more dipole configuration. Impulsive disturbances of the geomagnetic field as a cause of induced currents in power lines.
Spectrometric observations of 630.0 nm emission equatorwards auroral oval during undisturbed days in Lovozero
Thus, the larger P, the more solar wind power must be loaded into the Earth's magnetosphere during the growth phase until substorm generation. Schmidt Institute for Earth Physics of the Russian Academy of Sciences (IPE RAS).
Суббуревая активность и ориентация фронта ударной волны межпланетного магнитного облака
На основе нового метода были созданы две версии программы: в первой версии расчеты выполнялись на 8 потоках 4-ядерного процессора Intel i7 с практически 100%-ным распараллеливанием с использованием системы OpenMP, а во второй версии - основной объем вычислений — расчет траекторий — выполнялся на графическом процессоре (GPU) Titan 1080. Таким образом, использование нового метода позволяет на хорошем персональном компьютере с одним или двумя современными графическими процессорами (GPU) Titan 1080 моделировать задачи, которые в случае использования метода частиц потребовали бы достаточно мощного кластерного суперкомпьютера.
Геоинформационная система мониторинга и прогнозирования состояния ионосферы в арктической области «Аврора - Арктика»
Два типа отклика магнитосферы в геомагнитных пульсациях Psc на взаимодействие с межпланетными ударными волнами
Estimation of the solar wind energy in the magnetosphere according to the results of the global MHD simulation.
Estimation of energy from solar wind to the magnetosphere according to the results of global MHD simulation
Dynamics of the proton aurora and SAR arc as a result of eastward propagation of Pc1 wave excitation region along the plasmapause. Case study
This technique has been implemented for key magnetospheric domains (midnight aurora and dayside cusp regions) as a complementary tool for monitoring the response of the geomagnetic field to solar wind and IMF forcing. About some possibilities of the regular balloon monitoring of cosmic rays in Apatity and Dolgoprudny for studying the magnetospheric effects in the intensity of cosmic rays.
On some possibilities of the regular balloon monitoring of cosmic rays in Apatity and Dolgoprudny for studying the magnetospheric effects in cosmic ray intensity
Ground-based magnetic disturbances, which are snapshots of solar wind/magnetosphere interaction processes, can be monitored by comparing time series of ground-based magnetic records with space weather parameters. However, a serious drawback of the analysis of ground magnetograms is the inevitable change in the magnetic response due to constant changes in the location of the station.
Analytical model of the Jovian magnetodisc: The choice of the current density azimuthal component dependence on distance from the planet
Fields, currents, particles in the magnetosphere We have developed and compared analytical models of the magnetosphere with different spatial dimensions and different dependencies of the azimuthal current density component on the distance. Simple models of an infinitely thin current disk, azimuthally symmetrical to the axis of the magnetic dipole, are considered in this work.
Modeling of the charged particles precipitation region from Earth’s radiation belts using the Stormer’s theory
The magnetodisk is located in the magnetic equatorial plane and depends on four parameters: distances to the inner and outer edges of the magnetodisc and two parameters that determine the radial profile of the current density in the disk. The current proportionality to 𝑗~1/𝑟 is related to the varying instability; and in the case 𝑗~1/𝑟2, the magnetic field flux of the disk 𝐵𝑀𝐷𝑟∙ 2𝜋𝑟2 in the northern and southern hemispheres is preserved, which corresponds to the free expansion of the plasma.
The determination of the location of geoelectric inhomogeneities in the earth's crust by using dual- frequency radioholographic method
This greatly facilitates the development of an analytical model, since in this case the vector potential of the magnetic field of the magnetic disk 𝐴𝑀𝐷 has only one non-zero component - 𝐴𝑀𝐷𝜑. Modeling the charged particle precipitation region from the Earth's radiation belts using the Stormer's theory.
Two-dimensional self-similar plasma equilibria
Does local B-minimum appear in the tail current sheet during substorm growth phase?
Fields, currents, particles in a magnetospheric growth phase event with six POES spacecraft crossing the pre-midnight auroral oval. An embedded anisotropic region was observed about 1o poleward of the outer boundary of the radiation belt in the 4-5 h wide sector of the MLT, indicating a persistent BZ2/j ridge-type maximum in the equatorial plasma sheet at distances of 15-20Re.
Sub-ion magnetic holes in the dipolarized magnetotail: Satellite observations and theoretical models
Dependence of relativistic electron precipitation on geomagnetic activity
We compare thinning and stretching processes for horizontal current sheets in near (X~ -10 Re) and far (X~ -20 Re) magnetotails, using data collected by the Cluster and THEMIS spacecraft missions. We show that the thinnest ends (origins) can be associated with tail plasma flows and compare these ends near and far from Earth.
Каппа распределения и особенности магнитосферной динамики
Структуры «косых» альвеновских волн в неоднородном двумерном магнитосферном резонаторе
Precipitation of subrelativistic energy electrons near the polar boundary of the Earth's radiation belt according to the data from measurements on the Vernov and Lomonosov satellites. Improvements in the flux of precipitating energetic electrons at the boundary of the Earth's outer radiation belt and the position of the oval auroras.
Система кинетических уравнений для бесстолкновительной космической плазмы в приближении силового равновесия электронов вдоль магнитного поля
Система уравнений модели тонкого токового слоя с постоянной нормальной компонентой магнитного поля с учетом замагниченных электронов
Поля, токи, частицы в магнитосфере, выражающие текущую плотность электронов через их концентрацию и магнитное поле.
Зависимость высыпаний энергичных протонов внутри анизотропной зоны от геомагнитной активности
This wave capture ensures that the ionospheric transmission/reflective properties are strongly dependent on the frequency. The IAR and IFW modes are coupled due to the frequency-dependent Hall conductivity of the ionosphere and the slope of the geomagnetic field lines.
Complicated Pc1 emissions in the late recovery phase of the last strong magnetic storm in September 2017
The terrestrial spatial and spectral structures of the Pc1 wave are calculated for local summer day/night conditions at a midlatitude observatory. The upper part of the ULF spectrum (f>1 Hz) is severely attenuated during wave transmission through the daytime ionosphere.
First results of exit point location estimation at high latitudes using probability density of Poynting vector and the circular polarization index at the ground
We can assume that this was the result of the influence of the wave propagation in the ionospheric Alfven resonator (IAR) at the latitudes where the pulsation frequency corresponds to the IAR-specific frequency. These Pc1 decreasing frequency emissions coincided with the rapid decrease of the solar wind dynamic pressure (Psw) from 6 nPa to 2 nPa (unfortunately there was a gap in the OMNI IMF and solar wind data in the past) that provided the plasma pause extending to the higher L-shells.
Геомагнитные пульсации и роль В.А. Троицкой в создании российской школы их исследований
MHD models of magnetic reconnection predict that standing slow mode shocks will be the main energy conversion region during the process. In one-dimensional approach, magnetic reconnection problem turns out to be a Riemannian task described by current plate decay in a wave train consisting of slow shock(s), rotational and contact discontinuity(s).
Широкополосные УНЧ возмущения электрического поля в прибрежной зоне Охотского моря
Несколько слов о взаимодействии малых возмущений с ударной волной в вязкой среде А.А. Любчич
Питч-угловая диффузия энергичных протонов при их взаимодействии с ЭМИЦ волнами
Аномальные пульсации герцового диапазона на фазе восстановления магнитной бури в сентябре 2017 г.: динамика пульсаций в контексте изменения параметров межпланетной
Поэтому с помощью многокомпонентных измерений на спутниках Van Allen Probe мы определили участки траекторий спутников, на которых вектор Пойнтинга QP-излучения был направлен от экватора и углы скорости волн были малы. Также на основе данных о функции распределения электронов по энергии и концентрации холодной плазмы, измеренных спутниками Van Allen Probe, были выполнены расчеты скорости роста свистковой волны при продольном распространении, которые сравнивались с наблюдаемыми спектрами QP выбросы. .
Results of solar cosmic rays flux observation on several spacecraft at different orbits in September 2017
Results of observation of the cosmic solar radiation on several spacecraft in different orbits in September 2017.
The study of coronal holes and related space weather phenomena in the CRAO А.V. Borisenko
Peculiarity of long-term changes in the geomagnetic cutoff rigidity of cosmic rays of inclined directions
These are southeast directions for detectors in the North Atlantic Ocean anomaly zone and northwest directions for the South Atlantic Ocean anomaly zone. On the trend in the heliosphere characteristics and galactic cosmic ray intensity in the minima of the last solar activity cycles.
On the trend in the heliospheric characteristics and galactic cosmic ray intensity in the minima of the last solar activity cycles
In the former zone the shear stiffness increases, in the latter zone it decreases, and on a global scale the shear stiffness decreases. The configuration of the magnetic field in the corona above the active region in which the energy for solar flares is accumulated.
The configuration of the magnetic field in the corona above the active region in which the energy is accumulated for solar flares
On the possibility of prognosis of solar flares and proton events from behavior of the ultraviolet emission
The proton flux on Earth could only be detected if the proton flux of this flare propagates along the magnetic field lines of the Archimedes spiral. The front of the flux of the solar cosmic rays is registered by the GOES apparatus with the delay that does not exceed the proton transit time and has a very steep rise.
Kinetic-scale plasma turbulence in the Earth's magnetosheath affected by the bow shock and the magnetopause
The arrival of cosmic solar radiation from western solar flares with a delay equal to the transit time and the coincidence of the measured spectrum of the fast (fast) component of cosmic solar radiation with the calculated spectrum of protons accelerated in a solar flare current diagram are the direct evidence of the proton acceleration in a solar flare. Diurnal variations of the bottom of the ionosphere during the proton precipitation on and after September 29, 1989.
Diurnal variations of the bottom edge of the ionosphere during the proton precipitations on and after 29 September 1989
Kinetic scale current sheets in solar wind
The role and technique of accounting of penumbra at estimation of the effective geomagnetic cutoff rigidity of cosmic rays
Событие GLE 10 сентября 2017
Солнце, солнечный ветер, космические лучи. Диаграмма направленности и геометрический фактор телескопических систем заряженных частиц с учетом фактической толщины детекторов, их эффективности и сравнения.
Использование пакета RUSCOSMICS в задачах оценки скорости ионизации атмосферы Земли протонами космических лучей
Response of the highest parameters of the F2 ionospheric layer around the EIA peak to some space weather events.
The response of the ionospheric F2 layer peak parameters around the crest of the EIA to some space weather events
The structural pattern and degree of perturbation in the ionosphere based on the radio tomography data under different geomagnetic activity levels
Production and quenching of Herzberg states of molecular oxygen in the nightglow of Venus, Mars, Earth
Height profiles of concentrations of the electronically excited oxygen molecules in the upper atmospheres of Venus, Mars and Earth for various vibrational levels are calculated. Estimation of the mode conversion effect for a VLF inverse problem solution in the cases of ultraenergetic relativistic electron (~ 100 MeV) precipitation.
Estimation of the mode conversion effect for a VLF inverse problem solution in the cases of ultra- energetic relativistic electron (~ 100 MeV) precipitations
Optical recording of the meteorite flight made it possible to accurately calculate the time and place of the meteorite explosion. A comparative analysis of electron concentration from object observations of partial reflections and the IRI model.
A comparative analysis of the electron concentration from the observations of the partial reflections facility and the IRI model
The monthly and seasonal variations of the NeQuick-2 model TEC with IRI-Plas 2017 model were compared with the GPS-TEC. From the forecast errors, it shows that the monthly and seasonal variation of the IRI-Plas 2017 GPS-TEC is overestimated in all the regions compared to NeQuick -2 models except in Addis Ababa station where there is a good agreement with the GPS-TEC is .
Study of HF radio waves absorption effects during X-ray solar flares using amplitude characteristics of chirp signals
The mechanism of PJ generation should be effective even in the conditions of high electrical conductivity in sunlit summer ionosphere. In the region of PJ formation due to strong heating of neutrals under the action of electric field, the thermospheric circulation is completely reconstructed.
Vibrational populations of electronically excited states of molecular nitrogen in the atmosphere associated with sprites
The SuperDARN data also demonstrate the existence of large sporadic electric fields at the time of PJ formation, suggesting that the thermoelectric mechanism of electric field generation in the voltage generation mode is efficient. Vibrational populations of sprite-related electronically excited states of atmospheric molecular nitrogen.
Ionospheric response to 2015 St. Patrick geomagnetic storm
The successful identification of single rays in the images from both cameras allows us to derive the height profile of the auroral emission [3]. Synthetic radiation spectra of some systems of blue-green spectral bands // "Physics of auroral phenomena" - Apatity, 2015.
The ionospheric ELF/VLF source electromagnetic field and the lower ionosphere electron density profile by ground-based observations in ionosphere heating experiments
It is concluded that the brightening in beam forms is usually accompanied by a hardening of the spectra of precipitating electrons. We present an approach to solve the inverse problem of estimating the ionospheric electron density profiles using ground-based measurements.
Simulation of oblique sounding ionogram at high latitudes
To find the optimal profile, we used the Monte-Carlo search, where the trial solutions are random modifications of the basic electron density profile that preserves its shape and continuity. The particularities of the solutions to the inverse problem and their confidence intervals are discussed.
BDS-GEO TEC variability at different time scales
Using the phase screen model and the theory of wave propagation in random media, we have identified the orientation of ionospheric irregularities over Weihai in the local geomagnetic field. Studies of the lithosphere-ionosphere coupling span more than four decades and still do not have a widely accepted solution.
IAR pulses and regional thunderstorms
However, at low latitudes, the SF branch never occurred, and a new type of SF often occurred, called strong-radius SF (SSF) derived from the SF range. Therefore, we suggest that, at low latitudes, ionospheric SF should be divided into four types, i.e., frequency SF, mixed SF, range SF, and strong beam SF, at high latitudes, SF types are the same as those described in the URSI Manual.
Ion upward flows in subauroral polarisation jet
According to the URSI manual, scattered F (SF) is divided into four types: frequency SF, range SF, mixed SF and branch SF. Since low-altitude ionospheric scintillation is caused by EPBs, SSF should have a similar physical mechanism to EPBs.
An analysis of one approach to model electric currents of seismic origin floating between the Earth and ionosphere
SSF had a closer correlation with ionospheric scintillations, but other types of SF did not. This paper presents the preliminary results of the intercomparison of the Upper Atmosphere Model (UAM) with the CADI digisounder data of the Voeikovo Observatory for February 2013 and with other well-known ionosphere models – TIE-GCM (2 versions), CTIPe (3 versions), UAM-P (Potsdam version) UAM).
Моделирование процессов распространения электромагнитных волн в волноводе Земля- ионосфера с учетом анизотропной ионосферы
Предварительные результаты (без какой-либо калибровки) показывают, что (1) TIE-GCM в целом воспроизводит форму и амплитуду дневного NmF2, в то время как другие модели, включая UAM, занижают дневные значения NmF2; (2) TIE-GCM и CTIPe значительно завышают наблюдаемые значения NmF2 в ночное время; завышение для TIE-GCM больше, чем для CTIPe; как УАМ, так и УАМ-П обычно занижают ночные значения NmF2, существуют также области завышения. Исследование показало, что в течение местной ночи в суббуревой интервал на обсерваториях в диапазоне широт от 20° до 70° с.ш. регистрируются синхронные ионосферные и геомагнитные возмущения в течение периода от 20 до 40 минут.
О связи пространственной глубины фронта зондирующего электромагнитного импульса в среде с дисперсией с эффективностью обнаружения объектов
Оценка концентрации окиси азота в полярных сияниях по данным наземных фотометрических наблюдений
Анализ высокоширотных ионограмм наклонного зондирования в период геомагнитной бури 17 марта 2015 г
Для изучения механизмов воздействия метеорологических процессов на ионосферу мы проанализировали данные электромагнитных и плазменных измерений на спутниках SWARM во время полетов над тайфуном ВонгФонг в 2014 г. В период интенсивной фазы тайфуна (со скоростью ветра более 100 узлов) ), в верхней ионосфере зафиксировано наличие «магнитной ряби» — колебаний небольшой амплитуды (0,1-5 нТл) с доминирующим периодом около нескольких десятков секунд, вызванных мелкомасштабными токами силовых линий.
Модель расчета лучевых траекторий коротких радиоволн с учетом анизотропии ионосферной плазмы и отклоняющего поглощения
Прикладная модель расчета распространения коротких радиоволн
Обсуждаются необходимость и перспективы создания самосогласованной модели системы магнитосфера-ионосфера-верхняя и средняя атмосфера, а также теоретический подход к описанию движения ионов и электронов в этой системе, эволюция самосогласованности. . магнитное и электрическое поля.
Выделение высокочастотных составляющих вариаций критической частоты методами спектрального анализа
Корреляция между направлением дрейфа и ориентацией поперечной анизотропии мелкомасштабных неоднородностей в ионосфере над Москвой
В период геомагнитной возмущенности в сентябре 2017 г., когда 8 сентября 2017 г. минимальное значение Dst достигло Dstmin = -142 нТл по данным http://wdc.kugi.kyoto-u.ac.jp/dst_realtime/ 201709/index.html), радиотомографические станции в пос.
Анализ ионограмм внешнего зондирования ИК-19 в области аврорального овала для условий равноденствия
Учет особенностей диаграмм направленности для ретроспективного анализа и соответствующей интерпретации ионограмм внешнего зондирования
Аномальное изменение поглощения ППШ в период дневной фазы эффекта день-ночь вариации
Рассмотрены данные комплексных синхронных измерений во время события 10 января 1997 г., когда в южном ММП произошел скачок плотности солнечного ветра с Bz = -10,3 нТл. Во всех случаях дуга РСА развивалась в L-оболочках с резким радиальным градиентом концентрации ионов водорода и примыкала к плазмопаузе снаружи.
The contribution of bremsstrahlung effect to the ionization of the polar atmosphere during the relativistic electron precipitation
Simultaneous monitoring of middle atmosphere ozone at Apatity and Peterhof in the winter 2017/2018
The study of this impact needs continuous monitoring of the air temperature and physical parameters of the cave – rock temperature, condensation processes, heat exchange, etc. For the evaluation of the optical depth, the ratio of the observed radiation and the estimated radiation for cloud-free conditions at 380 nm is determined depending on the zenith angle.
Типы профилей возрастаний гамма-фона при осадках и их связь с атмосферными явлениями
Ozone column data from the OMI instrument satellite Aura on the Earth Observing System were used for comparisons and to set the exact wavelength center position of the 313 nm filter to minimize the ozone retrieval error of our algorithms. By regressing our ozone data against the OMI data when ozone amounts were retrieved for the same days, the exact central wavelength of the 313 nm filter was determined.
Возрастания гамма-фона при осадках: характеристики событий и их статистические особенности
Микроклиматические вариации температуры воздуха в условиях слабовсхолмленного рельефа
Применение математической модели для исследования влияния рельефа Земли на глобальную циркуляцию ее средней атмосферы
Параметризации оптических параметров в дальнем и среднем ИК диапазонах в нижней и средней атмосфере Земли
Footprints of volcanic activity in polar tree rings
The main problem in the whole problem of biological effects of natural geomagnetic disturbances is the deficit between the modeled current and the fields in biological media enriches 5-7 orders of magnitude due to the slow and weak fields caused by geomagnetic disturbances, including the most severe storms, and reported correlations between biological objects and geomagnetic disturbances. This makes it possible to distinguish between studies based on spurious correlations and effects that may be related to geomagnetic disturbances.
Количественная оценка двигательной активности серых тюленей при воздействии на них низкочастотных электромагнитных полей
