Yu. Yampolsky

Yu. Yampolsky
Institute of Radio Astronomy NAS | ri.kharkov.ua · Radio Physics of Geospace

Dr. Sci., Corr. member, NAS Ukraine

About

242
Publications
22,972
Reads
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945
Citations
Additional affiliations
May 2016 - present
National Academy of Sciences of Ukraine
Position
  • Principal Investigator
June 1993 - March 2020
Institute of Radio Astronomy NAS
Position
  • Principal Investigator
Education
September 1964 - June 1969
V. N. Karazin Kharkiv National University
Field of study
  • Radio Physics and Electronics

Publications

Publications (242)
Conference Paper
Full-text available
In 2021, the former flagship of Britain's Royal Scientific Navy RRS James Clark Ross was bought by Ukraine and renamed to Noosphere (http://uac.gov.ua/en/icebreaker-noosphere-en/). At the end of January 2022, Noosphere should depart to its first voyage from Ukraine to Antarctica under the Ukrainian flag. Currently work is underway to install a radi...
Presentation
Full-text available
Akademik Vernadsky Station as a key point for studying the global lightning activity through Ukrainian ELF-VLF magnetometers network (review) Oleksandr Koloskov* (1, 2), Yuri Yampolski(2), Oleg Budanov(2), Alexander Shvets(3), Alexander Nikolaenko(3) (1) National Antarctic Scientific Center of Ukraine, Kyiv, Ukraine; e-mail: alexander.koloskov@gma...
Presentation
Full-text available
Geospace research at the Ukrainian Antarctic Station Akademik Vernadsky (review) Oleksandr Koloskov* (1, 2), Yuri Yampolski(2), Andriy Zalizovski(1, 2, 3) (1) National Antarctic Scientific Center of Ukraine, Kyiv, Ukraine; e-mail: alexander.koloskov@gmail.com, zalizovski@gmail.com (2) Institute of Radio Astronomy of NAS of Ukraine, Kharkiv, Ukrain...
Article
We present variations in the source bearings and polarization of the horizontal magnetic field of Q bursts recorded at Antarctic station “Akademik Vernadsky” (65.2458 ° S, 64.2572 ° W). We analyzed the parameters of the “polarization ellipse” inscribed in the initial impulse of the Q-burst, which is formed by a direct wave propagating from lightnin...
Article
Full-text available
This paper describes a system for multi‐position Doppler ionosphere sounding implemented at the beginning of 2018 in the Kharkiv region of Ukraine, the data processing technique and initial results of data analysis. The system comprises a high frequency (HF) transmitter and three receiving sites making almost a right triangle with catheti of 32.8 a...
Conference Paper
Full-text available
We report on the results obtained during the June 23-26, 2020 experiments at the EISCAT heating facility aimed to: 1) explore artificial ionospheric turbulence (AIT) and stimulated electromagnetic emissions (SEE) during transmissions near the 3 rd electron gyroharmonic and upper hybrid resonance; 2) search for artificial ionospheric layers; 3) expl...
Presentation
Full-text available
We report on the results obtained during the June 23-26, 2020 experiments at the EISCAT heating facility aimed to: 1) explore artificial ionospheric turbulence (AIT) and stimulated electromagnetic emissions (SEE) during transmissions near the 3rd electron gyroharmonic and upper hybrid resonance; 2) search for artificial ionospheric layers; 3) explo...
Conference Paper
Full-text available
The paper presents and discusses the distributions of the number of transient events derived from long-term ELF records collected in the Antarctic and in the Arctic.
Presentation
Full-text available
The paper presents and discusses the distributions of the number of transient events derived from long-term ELF records collected in the Antarctic and in the Arctic.
Conference Paper
Full-text available
Multiposition Doppler HF facility for monitoring travelling ionospheric disturbances (TID) over Ukraine is in operation since January 2018. As is well known, TID are the result of atmospheric gravity waves (AGW) propagating in the ionosphere. We report on the results of reconstruction of AGW/TID in the form of perfectly reflecting moving wave surfa...
Conference Paper
Full-text available
Continuous Doppler monitoring of the propagation of HF signals from Europe and North America to the Antarctic Peninsula region has been performed at the Ukrainian Antarctic Station Akademik Vernadsky (UAS) since May 2010. Data analysis of long-term measurements shows that long-distance propagation in these directions is provided by four different m...
Article
Full-text available
The Earth–ionosphere cavity resonator is occupied primarily by the electromagnetic radiation of lightning below 100 Hz. The phenomenon is known as Schumann resonances (SR). SR intensity is an excellent indicator of lightning activity and its distribution on global scales. However, long-term measurements from high latitude SR stations revealed a pro...
Conference Paper
Full-text available
Studies of geophysical processes in the Earth-ionosphere cavity driven by the global thunderstorm activity are carried out in order both to calculate the characteristics of excitation sources and estimate field propagation parameters in the global resonator formed by the Earth 's surface and the lower ionosphere. The main sources of excitation of...
Conference Paper
Full-text available
Doppler monitoring of the propagation of HF signals from Europe and North America to the Antarctic Peninsula region has been performed continuously at the Ukrainian Antarctic Akademik Vernadsky station (UAS) since May 2010. Data analysis of long-term measurements shows that long-distance propagation in these directions is provided by four different...
Conference Paper
Full-text available
Systematic round-the-clock observations of the horizontal orthogonal components of magnetic field variations in the ELF waveband have been performed at the Ukrainian Antarctic Station "Akademik Vernadsky" (65.25оS and 64.25оW) since 2002. The ELF signals are recorded by the magnetometer facility consists of two highly sensitive low noise induction-...
Conference Paper
Full-text available
Why is the problem of studying the dynamics of global lightning activity (GLA), despite its long history, becoming more and more relevance? This is due to several, in our opinion, a number of reasons. First, thunderstorm activity is the main source of the electromagnetic background at the low altitudes of atmosphere. The frequency spectrum of a lig...
Conference Paper
Full-text available
A dedicated HF ionosphere modification campaign was carried out during 23-26 June 2020 at the EISCAT heating facility, Tromsø, Norway within the framework of the Program of Scientific collaboration between Ukraine and the EISCAT scientific association. In the course of the experiment, O-and X-mode waves at frequencies stepping by 10 kHz around the...
Article
Full-text available
Purpose: Analysis of the air temperature annual variations over different South American regions by long series of long-term meteorological observations, consideration of the physico-geographical and climatic features of the Amazonian lowlands, which affect thunderstorm activity in this region, search for the connection between seasonal variations...
Article
Full-text available
The 11-year solar activity cycle in the vertical ozone distribution over the Antarctic station Faraday/Vernadsky in the Antarctic Peninsula region (65.25° S, 64.27° W) was analyzed using the Solar Backscatter Ultra Violet (SBUV) radiometer data Version 8.6 Merged Ozone Data Sets (MOD) over the 40-year period 1979-2018. The SBUV MOD ozone profiles a...
Presentation
Full-text available
Zonal average monthly Solar Backscatter Ultraviolet Radiometer (SBUV) satellite data have been used to study the vertical ozone distribution in 1979–2018. The quasi-11-year period solar activity cycle from the ozone data series was investigated with the wavelet transform. Solar activity was characterized by sunspot numbers and F10.7 solar radio flu...
Article
Full-text available
The paper aims at providing the technical information about Doppler vertical sounding of the ionosphere that started at the Ukrainian Antarctic Akademik Vernadsky station since 2017; developing the technique for processing and visualization of data of vertical sounding of the ionosphere in the form of height-time diagrams of median values of ionosp...
Article
Full-text available
Purpose: An experimental study of signatures of traveling ionospheric disturbances (TID) observed in diurnal-seasonal variations of the parameters of probe HF signals propagating on theoblique single-hop RWM–LFO radio path, derived from the yearlong monitoring data. Design/methodology/approach: A long term digital recording of the HF radio signals...
Article
The paper analyzes the records of the magnetic components of the Schumann resonance signals obtained at the Ukrainian Antarctic station “Akademik Vernadsky” (coordinates: 65.25° S, 64.25° W) from March 2002 to March 2019 and at Svalbard in the Arctic (coordinates: 78.15° N and 16.05° E) from October 2013 to June 2019. The time-course is studied of...
Article
Full-text available
This paper describes the results of the atmospherics measurements in the extremely low-frequency (ELF) and very low-frequency (VLF) frequency ranges performed at the Akademik Vernadsky station (64.26W; 65.25S) during February–April 2019. The main objective of the study was the implementation of a single-site technique for monitoring the lower ionos...
Article
Full-text available
Purpose. A qualitative and quantitative study of the correlation of space-time changes of the total electron content of the ionosphere with variations in the energetic electron flux during a significant increase of the solar wind density and velocity. Determination of the conditions when the increase of the intensity of the flux of energetic electr...
Article
Full-text available
To investigate weekly cycle in aerosol parameters using recent AERONET data, we analyse the 7-days peri-odicity in the different regions that vary in the level of the industrial aerosol load. In the paper we are looking for the weekly cycle in atmosphere aerosol optical thickness at 440 and 870 nm (AOT440, AOT870), measured by AERONE sun-photometer...
Article
Full-text available
PACS numbers: 92.60.Pw, 93.30.Bz, 93.30.Ca Purpose: Search for the connection of seasonal variations in characteristics of the Earth-ionosphere global resonator with air temperature in Africa. Comparison of results obtained in Arctica, Antarctica and in the midlatitudes of the Northern Hemisphere with the surface temperature of African continent....
Conference Paper
Full-text available
The aim of this work is testing a new ELF-VLF receiving and analyzing system for registration and analysis of natural pulsed electromagnetic signals – tweek-atmospherics, and signals from VLF radio stations in the frequency range from 700 Hz to 24 kHz at “Academik Vernadsky” station.
Conference Paper
Full-text available
We present the results of investigations of AGW/TID over the Antarctic Peninsula and Europe obtained using two different techniques of RF remote sensing.  Multi-position coherent HF system was installed in Antarctica at the Akademik Vernadsky (Ukraine) and Palmer (USA) Antarctic stations, and at Kharkiv region of Ukraine. Several GNSS receivers ar...
Article
Full-text available
Мета. Розробка метода дослідження динаміки екваторіальної границі нічної сторони північного аврорального овалу за даними реєстрацій розсіяних сигналів на наддалекій радіолінії. Методи. Спектральний, часовий і частотно-часовий аналіз ВЧ сигналів станцій служби точного часу, що реєструються на Українській антарктичній станції (УАС) «Академік Вернадсь...
Conference Paper
The state of the near-Earth space environment, including the biosphere, is determined by many factors. Traditionally, we take into consideration only "strong" factors that are given to a person in feelings. This is-illumination, gravity, temperature, pressure, humidity, chemical composition and convection of air. A number of the latter are included...
Conference Paper
Full-text available
The state of the near-Earth space environment, including the biosphere, is determined by many factors. Traditionally, we take into consideration only "strong" factors that are given to a person in feelings. This is-illumination, gravity, temperature, pressure, humidity, chemical composition and convection of air. A number of the latter are included...
Conference Paper
According to the long-term monitoring of the natural noise of the extremely low frequency (ELF) range at the Ukrainian Antarctic Akademik Vernadsky station, at the Low Frequency Observatory (LFO) of the IRA NAS of Ukraine in the Martova village, as well as on the SOUSY Observatory at Svalbard, Norway, seasonal variations in the intensity of the fir...
Conference Paper
Full-text available
The work presents the results of diagnostics of atmospheric gravity waves (AGW) and associated with them travelling ionospheric disturbances (TID) over the Antarctic Peninsula obtained using two different RF remote sensing techniques. The first one is based on multi-positional GNSS measurements of total electron content (TEC). The second technique...
Presentation
Full-text available
A technique for multiposition Doppler HF sounding of the ionosphere that use the emission of broadcasting radio-stations as probing signals is developed in the Institute of Radio Astronomy of National Academy of Sciences of Ukraine (IRA NASU) during some last decades. At present the Internet-controlled receiving sites designed by IRA NASU are locat...
Presentation
Full-text available
Presentation is devoted to to the processing and analysis of signals from RWM radiostation of the exact time and frequency service on two radio lines - high-latitude (RWM-Tromso) and mid-latitude (RWM-LFO). The signals were continuously registered at a frequency of 9.996 MHz during 2013 by two receiving stations located at the Low-frequency Observa...
Conference Paper
Full-text available
MULTIPOSITIONAL - ANTARCTICA, UKRAINE, ARCTIC ELF DIAGNOSTICS OF GLOBAL THUNDERSTORM ACTIVITY (RESULTS AND PROSPECTS) Global thunderstorm activity (GTA) is connected with powerful dynamic processes in the Earth's atmosphere and can be used as an indicator of climate change. One of the effective remote methods of its observation is the monitoring o...
Article
Full-text available
A new super-long-range wave propagation technique was implemented at different High Frequency (HF) heating facilities. The HF waves radiated by a powerful heater were scattered into the ionospheric waveguide by the stimulated field aligned striations. This waveguide was formed in a valley region between the E-and F-layers of the ionosphere. The wav...
Conference Paper
Full-text available
Ionospheric HF sounding observations made during 2015-2017 in Antarctic Peninsula region are analyzed with the emphasis on the travelling ionospheric disturbances phenomenology. Drake Passage in Antarctica generates severe tropospheric disturbances making it a good candidate for studying tropospheric-ionospheric interaction and propagation of the w...
Article
Full-text available
Purpose: Diagnostics of regular and sporadic ionospheric variations using coherent systematic monitoring of spectral characteristics of the probe HF signals on the inclined singlehop radio paths. Design/methodology/approach: Two HF receiving stations located at the Low Frequency Observatory of the Institute of Radio Astronomy, National Academy of...
Article
Full-text available
Main objective of the study: сorrelation study of long-term seasonal variations of the intensity of the global electromagnetic (Schumann) resonance in the Earth-ionosphere cavity and the air temperature and in African center of the global thunderstorm activity. Methods: the correlation analysis of the time series was used. By using the 13-year data...
Article
Full-text available
objectives: (1) comparison of the 7-day variation of aerosol parameters of industrially developed regions of the Earth with weekly changes in the Antarctic as an area with a minimum technogenic load; (2) test the anthropogenic nature hypothesis of 7-day variation of aerosol content in the atmosphere (weekend-effect), which was previously proposed b...
Article
Full-text available
Vertical sounding of the ionosphere (VSI) is the oldest and still one of the most widely used methods of diagnostics of the Earth atmosphere’s plasma. Today there exists a worldwide network of the VSI sounders developed by different research groups; however, the existing coverage is still not sufficient for modern scientific and operational purpose...
Conference Paper
Full-text available
Ozone is a minor constituent of the terrestrial atmosphere with its altitudinal maximum in the stratosphere. Ozone content is dependent on a series of chemical and dynamical factors including catalytic destruction under influence of chlorine and bromine, Brewer–Dobson circulation, large-scale atmospheric wave penetration. Existence of ozone molecul...
Article
The peculiarities of acoustic-gravity waves propagating in inhomogeneous polar thermosphere flows have been investigated. It is shown that a spectrum filtration and a change in amplitudes of acoustic-gravity waves occur in the region of polar thermosphere circulation. As a result, the waves with horizontal lengths of 500–700 km and periods of ∼10 m...
Article
Full-text available
The background seasonal and diurnal variations of characteristics of HF radio signals in frequency and time domains propagated at the long radio paths are studied. The signals transmitted by RWM (frequencies 4996, 9996, and 14996 kHz) and CHU (frequencies 3330, and 7850 kHz) time service radio stations were received at the Ukrainian Antarctic Stati...
Article
Full-text available
The technique of the orthogonal projection of ionosphere electronic content variations for mapping total electron content (TEC) allows us to visualize ionospheric irregularities. For the reconstruction of global ionospheric characteristics, numerous global navigation satellite system (GNSS) receivers located in different regions of the Earth are us...
Article
Full-text available
Purpose: Correlation study of long-term seasonal variations of intensity of the global electromagnetic (Schumann) resonance in the Earth-ionosphere cavity and the air temperature for the African center of the global thunderstorm activity. Design/methodology/approach: The correlation analysis of the time series was used. By using the 13-year data (s...
Conference Paper
Full-text available
The work presents the results of diagnostics of AGW/TID phenomena over the Antarctic Peninsula obtained using two different RF remote sensing techniques. The first one is based on multi-positional GNSS TEC measurements. The second technique is bistatic HF Doppler ionospheric sounding. Twoposition coherent HF system was created at Akademik Vernadsky...
Conference Paper
Full-text available
As a result of analysis of more than 20-year experimental databases accumulated in Antarctica at Akademik Vernadsky station it was found that both Es and spread-F dependent on the tropospheric weather mostly at the winter time.
Conference Paper
Full-text available
One among the features of ionosphere over the Antarctic Peninsula is the anomalous diurnal variation of electron concentration in the summer. This phenomenon was discovered more than half of century ago at Faraday station by the data of vertical sounding of ionosphere (VSI) in variations of critical frequency (foF2), and was called subsequently "We...
Poster
Full-text available
Multiposition radio sounding of the near-Earth plasma, by the signals of global navigation satellite system (GNSS), can be efficiently used for studying the ionospheric processes. This became possible due to development of the networks of dual-frequency receivers, which originally were designed for geodetic and navigation tasks [1]. Using the techn...
Conference Paper
As is known, auroral ovals represent areas in the height latitude ionosphere in which large numbers of protons, electrons and ions precipitate from the Earth’s magnetosphere. These particles have energies up to hundreds keV and disturb atoms and molecules in the upper atmosphere. As a result, it is possible to register their luminosity in optical a...
Conference Paper
Full-text available
In the past century, the human impact on the environment has become very important and even has produced a new cycle of atmospheric parameter variations, which is associated with a weekly cycle. In the report we are testing on the base of atmospheric aerosol data. We provided the search of weekly variations in the atmosphere aerosol parameters over...