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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Unusual Enhancement of Midlatitude Sporadic-E Layers in Response to a Minor Geomagnetic Storm
Atmosphere, 2022 This study investigates the variations of middle and low latitude sporadic-E (Es) layers in response to a geomagnetic storm. Es layers are observed by five ionosondes located in the Eastern Asian sector.
Qiong Tang +6 more
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Long-distance propagation of 162 MHz shipping information links associated with sporadic E [PDF]
Atmospheric Measurement Techniques, 2022 Sporadic E layers form in the daytime midlatitude ionosphere as a result of wind shears in the mesosphere–lower-thermosphere compressing metallic ions of meteoric origin into dense, narrow sheets extending over hundreds or thousands of kilometers ...
A. T. Chartier +2 more
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Searching for effects caused by thunderstorms in midlatitude sporadic E layers [PDF]
, 2017 Possible thunderstorm - sporadic E (Es) layer coupling effects are investigated during two measurement periods, one in 2013 and one in 2014. The analysis was based on ionospheric observations obtained from a Digisonde at Pruhonice, the Czech Republic, an
Barta, Veronika +10 more
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An algorithm for determining torsion growth of elliptic curves
, 2020 We present a fast algorithm that takes as input an elliptic curve defined over $\mathbb Q$ and an integer $d$ and returns all the number fields $K$ of degree $d'$ dividing $d$ such that $E(K)_{tors}$ contains $E(F)_{tors}$ as a proper subgroup, for all ...
González-Jiménez, Enrique +1 more
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GNSS Ionosphere Sounding of Equatorial Plasma Bubbles
Atmosphere, 2019 Ground- and space-based Global Navigation Satellite System (GNSS) receivers can provide three-dimensional (3D) information about the occurrence of equatorial plasma bubbles (EPBs).
Guanyi Ma +5 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
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Solar-Terrestrial Physics, 2017 A double-laser beam lidar to measure potassium (K) layer at Beijing (40.5° N, 116.2° E) was successfully developed in 2010. The parameters of sporadic Ks layers and their distributions were given.
Jing Jiao +4 more
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First report of acute autochthonous hepatitis E in Portugal
Journal of Infection in Developing Countries, 2011 Hepatitis E infection is usually a self-limiting disease. In industrialized countries, sporadic cases of acute hepatitis E virus (HEV) infections have been described; their number seems to be increasing in European countries.
Vitor Duque +4 more
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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.
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