Results 21 to 30 of about 3,587,319 (350)

Registration of Atmospheric-Electric Effects from Volcanic Clouds on the Kamchatka Peninsula (Russia)

Atmosphere, 2020
The paper is devoted to the description of observations over atmospheric and electric effects from volcanic eruptions on Kamchatka peninsula (Russia) and perspectives of their development.
Pavel P. Firstov, Evgeniy I. Malkin, Rinat R. Akbashev, Gennadiy I. Druzhin, Nina V. Cherneva, Robert H. Holzworth, Vladimir N. Uvarov, Ivan E. Stasiy   +7 more
doaj   +1 more source

Estimation earthquake occurrence probability in Kamchatka region based on seismological and complex of ionospheric precursors [PDF]

EPJ Web of Conferences, 2021
In this paper the authors present the method of estimation of a region, waiting period and probability of strong earthquakes with KS ≥ 13.5 (M ≥ 6.0) in Kamchatka region based on the combination of mid-term and short-term predictive signs accompanying ...
Boganov Vadim, Pavlov Aleksey
doaj   +1 more source

Методика выделения информативных признаков в сигналах геоакустической эмиссии

Информатика и автоматизация, 2019
Исследования геоакустической эмиссии в сейсмоактивном регионе на Камчатке показывают, что при подготовке землетрясений и последующей релаксации поля локальных напряжений в пункте наблюдений в геоакустических сигналах возникают ярко выраженные импульсные ...
Yuri Igorevich Senkevich, Yuri Valentinovich Marapulets, Olga Olegovna Lukovenkova, Alexandra Andreevna Solodchuk   +3 more
doaj   +1 more source

Balanced‐to‐unbalanced and balanced‐to‐balanced filtering rat‐race couplers using multilayer substate integrated waveguide cavities

IET Microwaves, Antennas & Propagation, 2021
This study reports a class of balanced‐to‐unbalanced (BTU) and balanced‐to‐balanced (BTB) filtering rat‐race couplers (FRCs) based on multilayer substrate integrated waveguide (SIW) cavities.
Xian Wang, Dongfang Zhou, Dewei Zhang, Yue Wang, Dalong Lv, Yi Zhang   +5 more
doaj   +1 more source

Statistical and simulation study on the separation in junction frequencies between ordinary (O) and extraordinary (X) wave in oblique ionograms

Earth, Planets and Space, 2022
The most important aim in interpreting an oblique ionogram is to obtain the accurate Junction Frequencies (JFs) of the ordinary (O) and extraordinary (X) mode.
Sun FengJuan, Wan XianRong, Zhang HongBo, Zhou Bao, Ban PanPan, Cao Hongyan   +5 more
doaj   +1 more source

gprMax: Open source software to simulate electromagnetic wave propagation for Ground Penetrating Radar

Computer Physics Communications, 2016
gprMax is open source software that simulates electromagnetic wave propagation, using the Finite-Difference Time-Domain (FDTD) method, for the numerical modelling of Ground Penetrating Radar (GPR).
Craig Warren, A. Giannopoulos, I. Giannakis   +2 more
semanticscholar   +1 more source

Analysis of ionospheric parameters during Solar events and geomagnetic storms

E3S Web of Conferences, 2016
The paper shows new methods of analysis of ionospheric and magnetic data applying the models of multicomponent constructions (MCM models) developed by the authors.
Mandrikova Oksana, Polozov Yury, Solovev Igor, Fetisova Nadezhda   +3 more
doaj   +1 more source

Propagation of Waves in Helical Wave Guides [PDF]

Journal of Applied Physics, 1958
The field configuration near the conductors of a helical wave guide is obtained from the solution of the spatial-wave equation for a developed helix. This solution is first obtained for the case of tape conductors and then adapted to elliptical (including circular) conductors by conformal transformation.
openaire   +3 more sources

Design of a polarization selective surface for co‐channel interference suppression

Electronics Letters, 2022
In this paper, a novel design of polarization selective surface (PSS) is proposed for co‐channel interference (CCI) suppression. By establishing a switchable doublet topology, two types of second‐order filtering responses with two transmission zeros are ...
Xian Wang, Yue Wang, Qikun Liu, Dongfang Zhou, Dalong Lv   +4 more
doaj   +1 more source

Acoustic wave propagation in the solar sub-photosphere with localised magnetic field concentration: effect of magnetic tension [PDF]

, 2009
Aims: We analyse numerically the propagation and dispersion of acoustic waves in the solar-like sub-photosphere with localised non-uniform magnetic field concentrations, mimicking sunspots with various representative magnetic field configurations ...
Shelyag, S., Thompson, Michael John, Zharkov, Sergei, Zharkov, S., M. J. Thompson, Fedun, V., S. Zharkov, Shelyag, Sergiy, Erdélyi, Robert, Erdelyi, R., R. Erdélyi, S. Shelyag, V. Fedun, Thompson, M.J., Fedun, Viktor   +14 more
core   +1 more source