Migrating and nonmigrating tidal signatures in sporadic E layer occurrence rates [PDF]
Advances in Radio Science, 2023 Abstract. We analyse sporadic E (ES) layer occurrence rates (OR) obtained from ionospheric GPS radio occultation measurements by the FORMOSAT-3/COSMIC constellation. Maximum OR are seen at 95–105 km altitude. Midlatitude ES layers are mainly due to wind shear in the presence of tides, and the strongest signals are the migrating diurnal and semidiurnal ...
Christoph Jacobi +2 more
openaire +4 more sources
Atmosphere, 2022 The development of sporadic-E (Es) layers over five Digisonde stations in the American sector is analyzed. This work aims to investigate the dynamic of such layers during the days around the geomagnetic storm that occurred on 8 September 2017. Therefore,
Laysa C. A. Resende +14 more
doaj +1 more source
Simultaneous observation of sporadic E with a rapid-run ionosonde and VHF coherent backscatter radar [PDF]
Annales Geophysicae, 2006 During the SEEK 2 rocket campaign, ionograms were recorded every minute at the Yamagawa Radio Observatory at about 90km west of the region monitored by a VHF (very high frequency) coherent backscatter radar.
T. Maruyama +3 more
doaj +1 more source
Inhomogeneous structure of the high-latitude ionosphere as observed at Norilsk [PDF]
, 2001 In March and August/September 1995, February 1996, and in March-April 1998, observations of the inhomogeneous structure of the high-latitude ionosphere were carried out at Norilsk (geomagnetic latitude and longitude are 64.2 N and 160.4 E, and L=5.2 ...
Lipko, Yu. V.
core +4 more sources
Modification Of Sporadic E-Layers Caused By Seismic Activity [PDF]
Surveys in Geophysics, 2000 Among all earthquake precursors, those related to electromagneticeffects are the most puzzling, and the many possible sources ofnoise are cause of lively controversies. A large number oflaboratory experiments clearly suggest that micro-fracturingis associated with the appearance of spontaneous charge production(electrification) and transient Electric ...
Pochotelov, O +6 more
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Sounding of sporadic E layers from China Seismo-Electromagnetic Satellite (CSES) radio occultation and comparing with ionosonde measurements [PDF]
Annales Geophysicae, 2022 GNSS radio occultation (RO) plays an important role in ionospheric electron density inversion and sounding of sporadic E layers. As China's first electromagnetic satellite, China Seismo-Electromagnetic Satellite (CSES) has collected the RO data from both
C. Gan +5 more
doaj +1 more source
Unusual Enhancements of NmF2 in Anyang Ionosonde Data [PDF]
Journal of Astronomy and Space Sciences, 2013 Sudden enhancements of daytime NmF2 appeared in Anyang ionosonde data during summer seasons in 2006-2007. In order to investigate the causes of this unusual enhancement, we compared Anyang NmF2’s with the total electron contents (GPS TECs) observed at ...
Jongyeon Yun +4 more
doaj +1 more source
Ionospheric irregularity reconstruction using multisource data fusion via deep learning [PDF]
Atmospheric Chemistry and Physics, 2023 Ionospheric sporadic E layers (Es) are intense plasma irregularities between 80 and 130 km in altitude and are generally unpredictable. Reconstructing the morphology of sporadic E layers is not only essential for understanding the nature of ionospheric ...
P. Tian +10 more
doaj +1 more source
Comparison of sporadic sodium layer characteristics observed at different time resolutions [PDF]
Annales Geophysicae, 2013 Sporadic sodium (Nas) layers, occurring in roughly the same height range as ionospheric sporadic-E layers, were first detected by lidar some 30 yr ago.
Y. J. Liu +3 more
doaj +1 more source
Sporadic E Layer with a Structure of Double Cusp in the Vertical Sounding Ionogram
Atmosphere, 2021 In this study, we analyzed a large number of vertical sounding ionograms, obtained by the mid-latitude Cyclone ionosonde (55.85° N; 48.8° E) of Kazan (Volga Region) Federal University, which operates in a rapid-run mode of ionograms (1 ionogram per ...
Kamil M. Yusupov +1 more
doaj +1 more source