Results 21 to 30 of about 2,664 (215)

Observation of Ionospheric Gravity Waves Introduced by Thunderstorms in Low Latitudes China by GNSS

open access: yesRemote Sensing, 2021
The disturbances of the ionosphere caused by thunderstorms or lightning events in the troposphere have an impact on global navigation satellite system (GNSS) signals.
Tong Liu   +4 more
doaj   +1 more source

Ionospheric response to the 2009 sudden stratospheric warming over the equatorial, low, and middle latitudes in the South American sector [PDF]

open access: yes, 2015
The present study investigates the ionospheric total electron content (TEC) and F-layer response in the Southern Hemisphere equatorial, low, and middle latitudes due to major sudden stratospheric warming (SSW) event, which took place during January ...
Coster, A. J.   +8 more
core   +2 more sources

The GPS global detection of the ionospheric response to solar flares [PDF]

open access: yes, 2000
This author suggests the concept of a new technology for global detection (GLOBDET) of atmospheric disturbances of natural and technogenic origin, on the basis of phase measurements of the total electron content (TEC) in the ionosphere using an ...
Afraimovich, E. L.
core   +3 more sources

Investigation of Low Latitude Spread-F Triggered by Nighttime Medium-Scale Traveling Ionospheric Disturbance

open access: yesRemote Sensing, 2021
In the current study, we investigated the mechanism of medium-scale traveling ionospheric disturbance (MSTID) triggering spread-F in the low latitude ionosphere using ionosonde observation and Global Navigation Satellite System-Total Electron Content ...
Zhongxin Deng   +8 more
doaj   +1 more source

Ionospheric effects of the solar flares of September 23, 1998 and July 29, 1999 as deduced from global GPS network data [PDF]

open access: yes, 2000
This paper presents data from first GPS measurements of global response of the ionosphere to solar flares of September 23, 1998 and July 29, 1999. The analysis used novel technology of a global detection of ionospheric effects from solar flares (GLOBDET)
A.T. Altyntsev   +27 more
core   +2 more sources

Ionosonde Observations of Spread F and Spread Es at Low and Middle Latitudes during the Recovery Phase of the 7–9 September 2017 Geomagnetic Storm

open access: yesRemote Sensing, 2021
This study presents observations of nighttime spread F/ionospheric irregularities and spread Es at low and middle latitudes in the South East Asia longitude of China sectors during the recovery phase of the 7–9 September 2017 geomagnetic storm.
Lehui Wei   +7 more
doaj   +1 more source

Simulation of Focusing Effect of Traveling Ionospheric Disturbances on Meter-Decameter Solar Dynamic Spectra [PDF]

open access: yes, 2018
For the first time we present simulation results of the focusing effect of the ionospheric plasma density irregularities, namely, Medium Scale Traveling Ionospheric Disturbances (MSTIDs), on solar radio emission by applying a ray-tracing method to the ...
Chen, Yao   +4 more
core   +2 more sources

Traveling ionospheric disturbances triggered by the 2009 North Korean underground nuclear explosion [PDF]

open access: yesAnnales Geophysicae, 2015
Underground nuclear explosions (UNEs) can induce acoustic-gravity waves, which disturb the ionosphere and initiate traveling ionospheric disturbances (TIDs).
X. Zhang, L. Tang
doaj   +1 more source

A LOFAR observation of ionospheric scintillation from two simultaneous travelling ionospheric disturbances [PDF]

open access: yesJournal of Space Weather and Space Climate, 2020
This paper presents the results from one of the first observations of ionospheric scintillation taken using the Low-Frequency Array (LOFAR). The observation was of the strong natural radio source Cassiopeia A, taken overnight on 18–19 August 2013, and exhibited moderately strong scattering effects in dynamic spectra of intensity received across an ...
Richard A. Fallows   +57 more
openaire   +16 more sources

Observations of ionospheric disturbances via U-shaped traces on ionograms

open access: yesГеодинамика и тектонофизика, 2019
The ionospheric vertical sounding is a basic technique for studying the Earth’s ionosphere. Taking into account the fact that conditions for propagation of radio waves depend on the operating frequency, diagnostics of the ionosphere is performed using ...
O. A. Laryunin
doaj   +1 more source

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