Search Results - "Kulak, Andrzej"

An unusual sequence of sprites followed by a secondary TLE: An analysis of ELF radio measurements and optical observations by Mlynarczyk, Janusz, Bór, József, Kulak, Andrzej, Popek, Martin, Kubisz, Jerzy

“…We present an extraordinary case of sprites in rapid succession—four sprite clusters in only 400 ms—followed by a secondary jet. Simultaneous ELF and optical…”
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Extremely low frequency electromagnetic field measurements at the Hylaty station and methodology of signal analysis by Kulak, Andrzej, Kubisz, Jerzy, Klucjasz, Slawomir, Michalec, Adam, Mlynarczyk, Janusz, Nieckarz, Zenon, Ostrowski, Michal, Zieba, Stanislaw

“…We present the Hylaty geophysical station, a high‐sensitivity and low‐noise facility for extremely low frequency (ELF, 0.03–300 Hz) electromagnetic field…”
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Novel analysis of a sudden ionospheric disturbance using Schumann resonance measurements by Dyrda, Michał, Kulak, Andrzej, Mlynarczyk, Janusz, Ostrowski, Michał

“…A spherical cavity between Earth and the lower ionosphere forms a global resonator for Extremely Low Frequency electromagnetic waves. Constant thunderstorm…”
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A new technique for reconstruction of the current moment waveform related to a gigantic jet from the magnetic field component recorded by an ELF station by Kuak, Andrzej, Mynarczyk, Janusz

“…The paper presents a reconstruction of the current moment waveform of the gigantic jet observed optically last winter in Europe, based on the magnetic field…”
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Comparison of global storm activity rate calculated from Schumann resonance background components to electric field intensity E0Z by NIECKARZ, Zenon, KULAK, Andrzej, ZIEBA, Stanisław, KUBICKI, Marek, MICHNOWSKI, Stanisław, BARANSKI, Piotr

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Estimation of global lightning activity and observations of atmospheric electric field by Gołkowski, Marek, Kubicki, Marek, Cohen, Morris, Kułak, Andrzej, Inan, Umran S.

“…Variations in the global atmospheric electric circuit are investigated using a wide range of globally spaced instruments observing VLF (∼10 kHz) waves, ELF…”
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The Accuracy of Radio Direction Finding in the Extremely Low Frequency Range by Mlynarczyk, Janusz, Kulak, Andrzej, Salvador, Jacobo

“…In this work, we study the accuracy of direction finding in the extremely low frequency (ELF) range using a newly installed broadband receiver equipped with…”
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New model simulations of the global atmospheric electric circuit driven by thunderstorms and electrified shower clouds: The roles of lightning and sprites by Rycroft, Michael J., Odzimek, Anna, Arnold, Neil F., Füllekrug, Martin, Kułak, Andrzej, Neubert, Torsten

“…Several processes acting below, in and above thunderstorms and in electrified shower clouds drive upward currents which close through the global atmospheric…”
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Finite-difference time-domain analysis of ELF radio wave propagation in the spherical Earth–ionosphere waveguide and its validation based on analytical solutions by Marchenko, Volodymyr, Kulak, Andrzej, Mlynarczyk, Janusz

“…The finite-difference time-domain (FDTD) model of electromagnetic wave propagation in the Earth–ionosphere cavity was developed under assumption of an…”
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An Analytical Model of ELF Radiowave Propagation in Ground-Ionosphere Waveguides With a Multilayered Ground by Kulak, Andrzej, Mlynarczyk, Janusz, Kozakiewicz, Joanna

“…A planetary crust with a low electric conductivity has a strong influence on extremely low frequency (ELF) radiowave propagation in the ground-ionosphere…”
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ELF Propagation Parameters for the Ground-Ionosphere Waveguide With Finite Ground Conductivity by Kulak, A., Mlynarczyk, J.

“…In the extremely low frequency (ELF) range, the space between the ground and ionosphere forms a spherical waveguide. When studying the ELF radio-wave…”
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Analytical modeling of Schumann resonance and ELF propagation parameters on Mars with a multi-layered ground by Kozakiewicz, Joanna, Kulak, Andrzej, Mlynarczyk, Janusz

“…Two electrically conductive planetary spheres, the ionosphere and the ground, form a spherical waveguide. Within such a planetary cavity a phenomenon called…”
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Mesoscale convective systems as a source of electromagnetic signals registered by ground-based system and DEMETER (Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions) satellite by Martynski, Karol, Blecki, Jan, Wronowski, Roman, Kulak, Andrzej, Mlynarczyk, Janusz, Iwanski, Rafal

“…Mesoscale convective systems (MCSs) are especially visible in the summertime when there is an advection of warm maritime air from the west. Advection of air…”
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Extremely Low Frequency Electromagnetic Investigation on Mars by Kozakiewicz, Joanna, Kulak, Andrzej, Kubisz, Jerzy, Zietara, Krzysztof

“…Natural electromagnetic (EM) signals of extremely low frequencies (ELF, 3 Hz–3 kHz) can be used to study many of the electromagnetic processes and properties…”
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Application of the Schumann resonance spectral decomposition in characterizing the main African thunderstorm center by Dyrda, Michał, Kulak, Andrzej, Mlynarczyk, Janusz, Ostrowski, Michał, Kubisz, Jerzy, Michalec, Adam, Nieckarz, Zenon

“…In this paper we present a new method for quantifying the main tropical thunderstorm regions based on extremely low frequency (ELF) electromagnetic wave…”
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Multiple-site investigation of the properties of an HF radio channel and the ionosphere using Digital Radio Mondiale broadcasting by Mlynarczyk, Janusz, Koperski, Piotr, Kulak, Andrzej

“…The Digital Radio Mondiale (DRM), one of the new digital radio broadcasting standards, has been designed to overcome typical short wave radio channel…”
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Study of a TGF Associated With an Elve Using Extremely Low Frequency Electromagnetic Waves by Marchenko, Volodymyr, Mlynarczyk, Janusz, Ostrowski, Michał, Kulak, Andrzej, Senchenko, Olesia, Kubisz, Jerzy, Michalec, Adam, Salvador, Jacobo, Diaz, Nahuel

“…A terrestrial gamma‐ray flash (TGF) associated with an Elve was recently reported by the Atmosphere‐Space Interactions Monitor (ASIM) (Neubert et al., 2020,…”
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Cloud-to-ground lightning dipole moment from simultaneous observations by ELF receiver and combined direction finding and time-of-arrival lightning detection system by Nieckarz, Zenon, Kulak, Andrzej, Zieba, Stanislaw, Odzimek, Anna

“…We present a new method of automatic detection of ELF impulses related to cloud‐to‐ground lightning at distances 1–2 Mm from a broadband ELF receiver and also…”
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Comparison of the charge moment change calculated from electrostatic analysis and from ELF radio observations by Nieckarz, Zenon, Baranski, Piotr, Mlynarczyk, Janusz, Kulak, Andrzej, Wiszniowski, Jan

“…We compare the results of two methods of calculation of the charge moment change (CMC, also called the dipole moment change) of the cloud‐to‐ground lightning…”
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Comparison of charge moment distribution in supercell and moderate thunderstorm based on ELF electromagnetic field measurements by Martynski, Karol, Kulak, Andrzej, Iwanski, Rafal

“…In this paper we have analysed atmospheric discharges, which occurred in storm cells in different synoptic and meteorological conditions. We have used the data…”
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