Results 31 to 40 of about 373,009 (204)
Atmospheric Chemistry and Physics, 2020 . Long-lived metallic ions in the Earth's atmosphere (ionosphere) have been investigated for many decades. Although the seasonal variation in ionospheric “sporadic E” layers was first observed in the 1960s, the mechanism driving the variation remains a ...
Bingkun Yu +10 more
semanticscholar +1 more source
An Empirical Model of the Sporadic E Layer Intensity Based on COSMIC Radio Occultation Observations
Space Weather, 2023 Ionospheric sporadic E layers are common phenomena occurring in the ionospheric E region altitude (∼90–120 km) with much higher electron density. The lack of a large amount of sporadic E layer intensity observation on a global scale restrains the ...
Jun Niu, Han‐xian Fang
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Currents and turbulence in and near mid-latitude sporadic E-layers caused by strong acoustic impulses [PDF]
Annales Geophysicae, 1997 The generation of Hall and field-aligned currents in and in the vicinity of nighttime mid-latitude sporadic E-layers moving under the action of strong acoustic impulses of seismic, anthropogenic, or meteorological nature is considered in a model ...
V. A. Liperovsky +3 more
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Sporadic E-layer and Powerful HF-Radio Emission
2019 Russian Open Conference on Radio Wave Propagation (RWP), 2019 285 ...
Yusupov Kamil Maratovich +5 more
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Vertical motion of ionization induced by the linear interaction of tides with planetary waves [PDF]
Annales Geophysicae, 2003 Experimental findings have shown that travelling planetary waves modulate the occurrence of mid-latitude sporadic-E-layers. Using a simple quantitative model, we analyse the effects of the linear interaction between tides and planetary waves on ion
M. Voiculescu, M. Ignat
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Journal of Geophysical Research: Space Physics, 2020 This study analyzes strong sporadic E layer (Es) formation in Boa Vista (BV, 2.8°N, 60.7°W, dip: 18°), a low‐latitude region in the Brazilian sector, which occurred far after the onset of a magnetic storm recovery phase.
L. Resende +12 more
semanticscholar +1 more source
Mid-latitude E-region bulk motions inferred from digital ionosonde and HF radar measurements [PDF]
Annales Geophysicae, 2004 In the mid-latitude E-region there is now evidence suggesting that neutral winds play a significant role in driving the local plasma instabilities and electrodynamics inside sporadicE layers.
G. C. Hussey +4 more
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Sequential sporadic-E layers at low latitudes in the Indian sector [PDF]
Annales Geophysicae, 1999 A study of the formation and movement of sequential Sporadic-E layers observed during the night-time hours at two Indian low-latitude stations, SHAR (dip 10°N) and Waltair (dip 20°N) shows that the layer are formed around 19:00 h. IST at altitudes of ~
P. T. Jayachandran +5 more
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IEEE Transactions on Antennas and Propagation, 2020 In the E-region of the ionosphere, at heights between 90 and 130 km, thin patches of enhanced ionization occur intermittently. The electron density in these sporadic-E (Es) clouds can sometimes be so high that radio waves with frequencies up to 150 MHz ...
C. Deacon +3 more
semanticscholar +1 more source
Artificial Periodic Irregularities and Investigations of Sporadic E-Layers
2019 URSI Asia-Pacific Radio Science Conference (AP-RASC), 2019 © 2019 URSI. All rights reserved. Artificial periodic irregularities (API) formed in the antinodes of the high-power standing radio wave in the Earth’s ionosphere are proven to be a powerful tool for studying E-region sporadic ionization (Es). We present some applications of the API technique for experimental studies of the Es-layer formations and ...
Bakhmetieva N.V., Yusupov K.M.
openaire +4 more sources