Results 131 to 140 of about 449 (162)
First Conjugate Observations of Medium-Scale Traveling Ionospheric Disturbances (MSTIDs) in the Europe-Africa Longitude Sector [PDF]
Journal of Geophysical Research: Space Physics, 2019 All-sky imagers located in Asiago, Italy (45.87oN, 11.53oE; 40.7o magnetic latitude) and Sutherland, South Africa (32.37oS, 20.81oE; −40.7o magnetic latitude) are used to study magnetically conjugate medium scale traveling ionospheric disturbances ...
Joei Wroten +2 more
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Self-Consistent Generation of MSTIDs Within the SAMI3 Numerical Model [PDF]
Journal of Geophysical Research: Space Physics, 2014 Abstract In this study, we use the three‐dimensional, physics‐based numerical model, SAMI3 (Sami3 is Another Model of the Ionosphere), to self‐consistently generate nighttime, electrified, medium‐scale traveling ionospheric disturbances (MSTIDs) at midlatitudes. These are the first numerical simulations to use the
Joseph D Huba, Jonathan J. Makela
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Investigations of Conjugate MSTIDS Over the Brazilian Sector During Daytime
Journal of Geophysical Research: Space Physics, 2017AbstractThis study focuses on the daytime medium‐scale traveling ionospheric disturbances (MSTIDs) observed at conjugate hemispheres. It is the first time that the geomagnetical conjugate daytime MSTIDs are observed over the South America sector. To observe the MSTID characteristics, we used detrended total electron content (TEC) derived from Global ...
Olusegun F Jonah, Esfhan A Kherani
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Advances in Space ResearchWe present evidence of the merging of Equatorial Plasma Bubbles (EPBs) with Medium-Scale Travelling Ionospheric Disturbances (MSTIDs) during the post-midnight sector over the Indian region, observed on the night of 28th January 2011, a typical spread F ...
Alok Taori, O B Gurav, R N Ghodpage
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SOURCE ANALYSIS OF DAYTIME MSTID USING OBSERVATION AND SIMULATION
2023Atmospheric gravity waves are known to be the source of medium-scale traveling ionospheric disturbances (MSTIDs) in the upper atmosphere. In recent studies, these gravity waves have mostly been linked to weather convection activities from tropospheric altitudes during the daytime.
Olusegun Jonah +3 more
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MSTID extraction from more frequent ionograms
2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2017The paper shows the possibility of rapid extraction from more frequent ionograms not only strong medium-scale traveling ionospheric disturbances (MSTIDs) in the F region in the form of cusps and hooks, but also weak MSTIDs, whose form may differ from the cusp (hook) shaped. To isolate these MSTIDs will be enough to follow the slope of the F layer cusp (
Adel Akchurin, Gregory Smirnov
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Seasonal Dependence of MSTIDs Obtained From 630.0 nm Airglow Imaging at Arecibo
Geophysical Research Letters, 2010 All‐sky imaging data of 630.0 nm airglow emissions are used to study the seasonal and solar activity dependence of medium‐scale traveling ionospheric disturbances (MSTIDs) over Arecibo, Puerto Rico (18.3° N, 66.7° W, 28° N mag lat). MSTIDs are typical F‐region signatures at midlatitudes, yet limited statistical results in the American sector hindered ...
Joei Wroten +2 more
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MHD Nature of Night-Time MSTIDs Excited by the Solar Terminator
Geophysical Research Letters, 2009 We have obtained first experimental evidence in favour of the magnetohydrodynamic (MHD) nature of night‐time medium‐scale travelling ionospheric disturbances (MSTIDs). We used total electron content (TEC) measurement data from the dense GPS networks in California and in Japan for 2008–2009.
Yury Yasyukevich +2 more
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Multi-Instrument Observations of MSTIDs and Source Determination
2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC), 2018A multi-day (6–8 May 2013), apparently medium-scale traveling ionospheric disturbance (MSTID) event with an ∼1 hour period was recorded using both the vertical-looking and steerable Millstone Hill incoherent scatter radar (ISR) systems during quiet geomagnetic activity.
Ross Dinsmore +3 more
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The influence of ionospheric neutral wind variations on the propagation of a MSTID event
2021<p>The event reports a special case of the propagation and morphology of medium scale travelling ionospheric disturbances (MSTIDs) over middle&#8211;latitude China. The MSTIDs were simultaneously observed by the all-sky imager, Swarm satellite, as well as the total electron content (TEC) from global positioning system (GPS).
Ji Luo +5 more
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