Results 21 to 30 of about 579,130 (348)

Diagnostic study of geomagnetic storm-induced ionospheric changes over very low-frequency signal propagation paths in the mid-latitude D region [PDF]

open access: yesAnnales Geophysicae, 2022
We performed a diagnostic study of geomagnetic storm-induced disturbances that are coupled to the mid-latitude D region by quantifying the propagation characteristics of very low-frequency (VLF) radio signals from transmitters located in Cumbria, UK ...
V. U. J. Nwankwo   +10 more
doaj   +1 more source

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

open access: yesEPJ 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

Characterisation of millimetre wave multimode radio-over-fibre systems [PDF]

open access: yes, 2008
Millimetre wave radio-over-fibre links using both singlemode and multimode fibres are demonstrated over a 0-50 GHz bandwidth operating at 1550 nm. Results show that good link gain can be achieved with both single mode and multimode detectors.Millimetre ...
Cryan, MJ, Khawaja, BAM
core   +2 more sources

Методика выделения информативных признаков в сигналах геоакустической эмиссии

open access: yesИнформатика 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   +3 more
doaj   +1 more source

Analysis of ionospheric parameters during Solar events and geomagnetic storms

open access: yesE3S 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   +3 more
doaj   +1 more source

Methods and Algorithms of Subsurface Holographic Sounding

open access: yesRemote Sensing, 2022
In our experiments, we develop and test portable multi-element receiver antenna arrays, electrically scanned in order to immediately obtain a recognizable image of subsurface objects.
A. V. Popov   +5 more
doaj   +1 more source

The Radiation Transfer at a Layer of Magnetized Plasma With Random Irregularities [PDF]

open access: yes, 1998
The problem of radio wave reflection from an optically thick plane monotonous layer of magnetized plasma is considered at present work. The plasma electron density irregularities are described by spatial spectrum of an arbitrary form.
A G Bronin   +8 more
core   +2 more sources

On the Formation of Cluster Radio Relics [PDF]

open access: yes, 2001
(abridged) We present detailed 3-dimensional magneto-hydrodynamical simulations of the passage of a radio plasma cocoon filled with turbulent magnetic fields through a shock wave.
Brueggen, Marcus, Ensslin, Torsten A.
core   +4 more sources

Dynamics and spatio-temporal distribution of geomagnetic disturbances during periods of increased solar activity and magnetic storms [PDF]

open access: yesE3S Web of Conferences, 2020
A detailed spatio-temporal analysis of magnetic data was performed during the periods of magnetic storms on October 02, 2013 and September 27, 2019 based on measurements of the station network.
Mandrikova Oksana, Rodomanskay Anastasia
doaj   +1 more source

Wavelet analysis of the LF radio signals collected by the European VLF/LF network from July 2009 to April 2011 [PDF]

open access: yes, 2012
In 2008, a radio receiver that works in very low frequency (VLF; 20-60 kHz) and LF (150-300 kHz) bands was developed by an Italian factory. The receiver can monitor 10 frequencies distributed in these bands, with the measurement for each of them of the ...
Arabelos, D.N.   +13 more
core   +2 more sources

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