Results 21 to 30 of about 336,044 (232)
Ionospheric flow during extended intervals of northward but BY-dominated IMF [PDF]
, 2003 We present SuperDARN radar observations of the nightside high-latitude ionospheric flow during two 6-hour intervals of quasi-steady northward interplanetary magnetic field (IMF).
Sigwarth, J.B. +2 more
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SUDDEN DISTURBANCES OF THE IONOSPHERE
Journal of Applied Physics, 1937 The phenomenon described in this paper is the occurrence of a very sudden change in ionization of a portion of the ionosphere. It manifests itself by the complete fading out of high-frequency radio transmission for a period of a few minutes to an hour or more, and by perturbations of terrestrial magnetism and earth currents.
openaire +2 more sources
Atmosphere, 2022 The Tonga volcano erupted on 15 January 2022, at 04:15:45 UTC, which significantly influenced the atmosphere and space environment, at the same time, an unprecedented opportunity to monitor ionospheric anomalies is provided by its powerful eruption.
Qiaoli Kong +7 more
doaj +1 more source
Comparison between SuperDARN flow vectors and equivalent ionospheric currents from ground magnetometer arrays [PDF]
, 2012 Equivalent ionospheric currents obtained with the spherical elementary current systems (SECS) method and derived from nearly 100 ground magnetometers spread over North America and Greenland are compared with ionospheric flow vectors measured by the ...
Angelopoulos, V. +6 more
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WTEC: A new index to estimate the intensity of ionospheric disturbances
Results in Physics, 2018 We propose a new index, WTEC, to estimate the level of ionospheric disturbances from Global Navigation Satellite Systems (GNSS) data. The index is calculated based on dual-frequency phase measurements from single GNSS receiver.
S.V. Voeykov +4 more
doaj +1 more source
An extended TRANSCAR model including ionospheric convection: Simulation of EISCAT observations using input from AMIE [PDF]
, 2005 International audienceThe TRANSCAR ionospheric model was extended to account for the convection of the magnetic field lines in the auroral and polar ionosphere.
Lathuillere, C. +11 more
core +2 more sources
Choice of optimum heights for registration of ionospheric response onto earthquakes
E3S Web of Conferences, 2017 To investigate the dependence of ionospheric disturbances on height we used model calculations, and the data of seismic and ionospheric observations during the Tohoku-Oki earthquake.
Krasnov Valerii +3 more
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Accuracy of VRS ionospheric corrections during ionospheric disturbances [PDF]
The 9th International Conference "Environmental Engineering 2014", 2014 This research presents accuracy analysis of ionospheric corrections embedded in VRS data stream provided by ASG-EUPOS reference network. The analysis are provided for disturbed ionospheric conditions that occurred in November 2013. The research are based on processing VRS station data and comparing the results to processing of real station data located
M Krukowska +2 more
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Ionospheric Phase Compensation for InSAR Measurements Based on the Faraday Rotation Inversion Method
Sensors, 2020 The ionospheric error can significantly affect the synthetic aperture radar (SAR) signals, particularly in the case of L band and lower frequency SAR systems. The ionospheric distortions are mixed with terrain and ground deformation signals, lowering the
Bing Li +7 more
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Earth, Planets and Space, 2022 A large eruption occurred on Jan. 15, 2022, at the submarine volcano Hunga Tonga-Hunga Ha’apai, southern Pacific, and the atmospheric Lamb wave was observed to have traveled round the Earth multiple times with a speed of ~ 0.3 km/s. Here, I compare their
Kosuke Heki
doaj +1 more source