Research laboratory «Physics of Solar and Terrestrial Connections»
Project leader:

Nikolay Barkhatov

Physics and Mathematics. D., Professor

Scientific staff

  • Anatoly Levitin – Doctor of Physics and Mathematics, Chief Research Officer of IZMIR RAN
  • Gennady Grigorev – Candidate of Physics and Mathematics, Leading Research Officer of FGNU NIRFI
  • Sergey Revunov – Candidate of Physics and Mathematics, Associate Professor
  • Oksana Barkhatova – Candidate of Physics and Mathematics, Associate Professor of NNGASU
  • Elena Revunova – Candidate of Physics and Mathematics, Senior teacher of NNGASU
  • Dmitry Shadrukov –Research Officer
  • Nataliya Kosolapova – Postgraduate
  • Aleksandr Vinogradov – Postgraduate

Development of the Scientific Research Laboratory

Scientific research laboratory «Solar - Terrestrial Relations» was established in 2004 upon the decision of the Academic Board FGBOU VPO ‘Minin University’.

Until the year 2014 the laboratory «Solar - Terrestrial Relations» functioned on a voluntary basis as a part of scientific and educational programs of the Academy of Sciences of Russia and the Ministry of Education and Science of the Russian Federation. Researches have been financed by grants RFFI, INTAS and by the Ministry of Education and Science of the Russian Federation within departmental special-purpose programs «Fundamental Researches of the higher school in terms of natural sciences and liberal arts» and «Development of scientific potential of the higher school». The laboratory received a government order made by the Ministry of Education and Science named «Fundamental Consistencies of Solar Activity Influence on Magnetosphericly-Ionospheric Electromagnetic and Plasma Processes».

Goals:

To establish fundamental consistencies of solar activity influence on magnetosphericly-ionospheric electromagnetic and plasma processes.

Objectives:

  1. Discover the nature of geomagnetic and plasma disturbance in circumterrestrial space caused by solar activity and high-energy geophysical phenomenon.
  2. Assess a level of their negative impact on ground-based and space-based communications and on satellite positioning systems.
  3. Develop systems forecasting and recovering geophysical parameters, which include methods of artificial intelligence.

Profile:

  1. Physical phenomena in magnetic clouds of solar wind causing geomagnetic storms of high intensity and high latitude substorms.
  2. Fundamental consistencies of the cause-effect relationship of long-term variations of geomagnetic field with preflare increase in electromagnetic disturbance in UV, X-ray and MHD spectrum.
  3. Ionospheric and geomagnetic disturbances stipulated by magneto gravity waves caused by high-energy geophysical phenomena.

Objects of research:

A magnetic cloud (A) of the solar wind causes an intensive geomagnetic storm (B) and the sequence of all polar events (substorm) (C): magnetic disturbance, energetic particle dropout, polar auroras. An intensive solar flare (D) changes parameters of the layers of t Earth’s atmosphere (E) by X-ray emissions. High intensity geophysical phenomena of natural (earthquakes, meteoroids, current systems) and artificial origin effect condition of the ionosphere (E) and geomagnetic field (F).

The role of scientific and research work in educational programs of the university

The laboratory’s achievements have been reflected on the educational process and used in while developing the following course of Physics: ‘Theoretical Physics - Electrodynamics’, ‘Electrical Engineering’, ‘Hydrodynamics and Magnetic Hydrodynamics’, ‘Wave Activities in space Plasma’, ‘Solar-Terrestrial Physics’, ‘Artificial Neural Networks’.

 

Candidate’s theses in Physics and Mathematics:

  1. Sergey Sakharov, Candidate’s thesis ‘Study of the Elements of Magnetospheric Activity through the Computer Modelling Method’ – specialization 25.00.29 – ‘Atmospheric and Hydrospheric Physics’;
  2. Aleksey Korolev, Candidate’s thesis ‘Study of Quantitative Connection of the elements of Solar Activity and Magnetospheric Disturbance’ – specialization 25.00.29 – ‘Atmospheric and Hydrospheric Physics’;
  3. Elena Zhulina, candidate’s thesis ‘Geomagnetic Activity Connected with Solar Coronal Emissions ’ – specialization 25.00.29 – ‘Atmospheric and Hydrospheric Physics’;
  4. Sergey Revunov, Candidate’s thesis ‘Large-Scale Phenomena in Solar Winds and Magnetospheric-Ionospheric Activity’ – specialization 25.00.29 – ‘Atmospheric and Hydrospheric Physics’;
  5. Oksana Barkhatova, Candidate’s thesis ‘Study of Ionospheric-Magnetospheric Current Systems and their Impact on Ionospheric Processes during Geomagnetic Disturbances ’ – specialization 25.00.29 – ‘Atmospheric and Hydrospheric Physics’;
  6. Elena Revunova, Candidate’s thesis ‘Connection of Stormy Geomagnetic Activities with the Characteristics of Magnetic Cloud and the Trajectory of the Earth’s Magnetosphere through it’ – specialization 25.00.29 – ‘Atmospheric and Hydrospheric Physics’.

Students’ participation in the work of the laboratory

Winners of the Razuvaev Scholarship in Nizhny Novgorod oblast:

Sergey Sakharov , Sergey Revunov, Oksana Barkhatova

Upheld Master’s Theses:

  1. N.Emelyanov ‘A Modelling Technique of Spatial-Temporal Wave Dynamics in Cosmic Plasma’;
  2. M.Zyryanova ‘Study of Heliospheric Storms with the Help of Modelling Methods by Students Majoring in Physics’;
  3. O.Barkhatova ‘Artificial Neural Nets For Cosmic Weather Forecast’;
    I.Dudkina ‘Study of Solar activity Manifestations in Geomagnetic Disturbances as a part of an Optional Course ‘Solar-terrestrial Physics’ ’;
  4. S.Revunov ‘Study of Solar-Terrestrial Relations while Forecasting Ionospheric Parameters as a Part of an Optional Course ‘Artificial Neural Nets in Geophysical Applications’;
  5. R.Ulybina ‘Forecasting of Ionospheric Parameters at High Latitudes ’;
  6. E.Kalinina ‘Manifestation of Arrangements of Magnetic Clouds of Solar Winds during Geomagnetic Activities’;
  7. R.Gluzman ‘Revision of Global Geomagnetic Activity Index Kp ;
  8. A.Guryashkina ‘Search and Identification of Parameters of Magnetic Clouds of Solar Winds’;
  9. E.Mochalova ‘Night Plasmospheric Protrusion as a Reason for Asymmetry in the Ring Current’;
  10. A.Panchuk ‘Geomagnetic Efficiency of Magnetic Cloud depending on the Trajectory of the Earth’s Magnetosphere Moving through it’

Annual students’ participation in the conference ‘Young Scientists of Nizhny Novgorod Oblast’.

Regular students’ participation in ‘Annual Conference in Radiophysics’ in Nizhny Novgorod State University.

Partners of the laboratory

  1. Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation named after Nikolay Pushkov of the Russian Academy of Sciences (IZMIRAN), Moscow
  2. Space Research Institute of the Russian Academy of Sciences (SRI RAS), Moscow
  3. Polar Geophysical Institute of the Russian Academy of Sciences (PGI KF RAS), Apatity
  4. Radiophysical Research Institute (RRI),the Ministry of Education and Science of the Russian Federation, Nizhny Novgorod
  5. Institute of Applied Science of the Russian Academy of Sciences (IPF RAS), Nizhny Novgorod

Main results of the laboratory activity

  • Neural networks principles of long-term predictions of solar activity indexes have been developed. Forecasting of the average annual Wolf number and average monthly value of radiant flux has become possible with forecasting efficiency 90%.
  • Value ranges of parameters of magnetic clouds of solar winds have been defined, which determine intensity of geomagnetic storms which they can generate while interacting with the Earth’s magnetosphere.
  • On the basis of the data from a patrol satellite which registers parameters of the interplanetary medium an algorithm of defining magnetic clouds and a method of short-term forecast of intensity of a possible magnetic storm have been elaborated.
  • A method of complex classification of global geomagnetic disturbances has been developed which is based on cause-and-effect relations with solar activity in solar winds.
  • A method of an hour-long forecast of dynamics of a global geomagnetic activity index Dst has been created with quality 85% according to the parameters of circumterrestrial plasma and interplanetary magnetic field which can be received on-line from patrol spacecraft while being in solar wind.
  • A method of the recovery of records of a horizontal component of the geomagnetic field at a chosen magnetic station has been established on the basis of data from other magnetic stations with 95% quality.
  • A method of correction of contemporary indexes of auroral electro jets intensity has been discovered which are identified according to the data of the less number of magnetic observatories in comparison with classical indexes AE.
    A taxonomic neural network method has been developed to identify location of a polar cap, auroral oval and subauroral zone of high-latitude space according to the geomagnetic data of meridional chains of magnetic stations.
  • An algorithm forecasting critical frequency of an ionospheric layer F2 and of a maximum observed frequency (MOF) for ionospheric short waves wireless signals has been elaborated taking into account geoeffective phenomena in space and the level of geomagnetic activity.
  • A possibility to use the observations of magnetogravitational disturbances in the Earth’s ionosphere in order to predict high-energy geophysical activities including tsunami and earthquake.

Publications in scientific magazines:

  1. ‘Bulletin of the Russian Academy of Sciences: Physics’
  2. ‘Radiophysics and Quantum Electronics’
  3. ‘Geomagnetism and Aeronomy’
  4. ‘Cosmic Research’
  5. ‘Magnetospheric Researches’
  6. ‘Magnetohydrodynamics’
  7. ‘Solar-Terrestrial Physics’
  8. ‘Annales Geophysicae’
  9. ‘Advances in Space Research’.

Development strategy of the laboratory:

  1. Participation in scientific projects supported by the grants of RFFI, INTAS and the Ministry of Education and Science of the Russian Federation within the project ‘Potential Development of the Higher School’.
  2. Extension of scientific collaboration with organizations which are related to exploration of the Arctic Regions for action-oriented purposes: forecast of geophysical disturbance in high latitude regions.
  3. Search of organizations which need forecast of high-energy geophysical phenomena (geomagnetic storms, tsunami, earthquakes) for scientific collaboration.
  4. Search of organizations which need assessment of the level of the negative impact on ground-based and space-based communications: short wave radio failure, decrease in accuracy of satellite positioning systems, power lines failure, pipeline corrosion.
  5. Intensification of popular-science and organizational activity to attract school leavers and university students to do scientific work within the laboratory’s activity fields.
  6. Renovating facilities and resources of the laboratory.