Results 41 to 50 of about 1,552 (215)
Solar-Terrestrial Physics, 2020 In this paper, we discuss the main types of quasiperiodic variations in amplitudes of a reflected signal during vertical sounding of the ionosphere at middle latitudes.
K.М. Yusupov +7 more
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Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.Abstract The vertical shear of horizontal neutral winds plays an important role in forming dense metallic layers in the E region. Previous studies suggest that metal ion layers may inhibit equatorial plasma bubble (EPB) development by enhancing E‐region Pedersen conductivity.
Minjing Li +3 more
wiley +1 more source
Solar-Terrestrial Physics, 2016 We present the results of numerical modeling of a traveling ionospheric disturbance that causes z-shaped bends at the Pedersen ray of oblique incidence ionograms.
Kim A.G. +3 more
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Image processing of digital chest ionograms
The British Journal of Radiology, 1988 Abstract A number of image-processing techniques have been applied to a digital ionographic chest image in order to evaluate their possible effects on this type of image. In order to quantify any effect, a simulated lesion was superimposed on the image at a variety of locations representing different types of structural detail ...
J R, Yarwood, B M, Moores
openaire +2 more sources
Reinvestigating the Nightside Ionosphere of Mars With 8 Years of Mars Express and MAVEN Data
Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.Abstract Tailward ion escape in the nightside magnetotail is one of the dominant paths of ion escape from Mars. The Martian nightside ionosphere can serve as a major reservoir for this escape channel, but its global distributions and dependence on the upstream solar wind have not been fully investigated due to observational limitations.
N. Takeuchi +2 more
wiley +1 more source
ROSE: a high performance oblique ionosonde providing new opportunities for ionospheric research
Annals of Geophysics, 1994 A high quality high frequency (HF) oblique ionosonde has been developed for use in propagation research and associated studies of the ionosphere. The ionosonde is known as ROSE (radio oblique sounding equipment) and requires the connection of a specially
P. S. Cannon, P. C. Arthur
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Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.Abstract We report the detection of a traveling ionospheric disturbance (TID) captured by the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) Active Ionospheric Sounding (AIS) instrument aboard the Mars Express spacecraft at 150–250 km altitude.
Rong Tian +10 more
wiley +1 more source
Highlighting the F2 trace on an ionogram to improve Autoscala performance
, 2010 This work describes a linear regression based method for highlighting the cuspidal trace on an ionogram. This method was initially thought to smooth out cases in which the autoscaling of the ionogram performed by Autoscala was erroneous because the F2 ...
Scotto, C. +3 more
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Assessing the quality of ionogram interpretation using the HF Doppler technique [PDF]
, 2007 International audienceThe first joint common volume measurements by the Digisonde Portable Sounder (DPS-4) and a new Doppler type system has been run at the Pruhonice ionospheric observatory (49.99° N, 14.54° E) since January 2004. The measurement of the
Lastovicka, J. +11 more
core +2 more sources
Doppler vertical sounding of the ionosphere at the Akademik Vernadsky station
Український антарктичний журнал, 2020 The paper aims at providing the technical information about Doppler vertical sounding of the ionosphere that started at the Ukrainian Antarctic Akademik Vernadsky station since 2017; developing the technique for processing and visualization of data of ...
A. Zalizovski +5 more
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