Results 21 to 30 of about 139,585 (296)

Sporadic E-layer and Powerful HF-Radio Emission

open access: yes2019 Russian Open Conference on Radio Wave Propagation (RWP), 2019
285 ...
Yusupov Kamil Maratovich   +5 more
openaire   +4 more sources

Observation of electron biteout regions below sporadic E layers at polar latitudes [PDF]

open access: yesAnnales Geophysicae, 2015
The descent of a narrow sporadic E layer near 95 km altitude over Poker Flat Research Range in Alaska was observed with electron probes on two consecutive sounding rockets and with incoherent scatter radar during a 2 h period near magnetic midnight.
G. A. Lehmacher   +2 more
doaj   +1 more source

Electron temperature in nighttime sporadic E layer at mid-latitude [PDF]

open access: yesAnnales Geophysicae, 2008
Electron temperature in the sporadic E layer was measured with a glass-sealed Langmuir probe at a mid-latitude station in Japan in the framework of the SEEK (Sporadic E Experiment over Kyushu)-2 campaign which was conducted in August 2002.
K.-I. Oyama, T. Abe, H. Mori, J. Y. Liu
doaj   +1 more source

Sporadi-E layer and metereological activity

open access: yesAnnals of Geophysics, 1995
Obscrvations of Es laycr performed at the ionospheric observatory of Rome from 1982 to 1989 have been used to investigate a possible correlation with cold front passages. Such a correlation may exist because of the AGW excited by tropospheric activity at
C. Scotto
doaj   +1 more source

Sporadic-E associated with the Leonid meteor shower event of November 1998 over low and equatorial latitudes [PDF]

open access: yesAnnales Geophysicae, 2001
Rapid radio soundings were made over Ahmedabad, a low latitude station during the period 16–20 November 1998 to study the sporadic-E layer associated with the Leonid shower activity using the KEL Aerospace digital ionosonde.
H. Chandra   +6 more
doaj   +1 more source

Searching for effects caused by thunderstorms in midlatitude sporadic E layers [PDF]

open access: yes, 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
core   +2 more sources

IMF effect on sporadic-E layers at two northern polar cap sites: Part II – Electric field [PDF]

open access: yesAnnales Geophysicae, 2006
This paper is the second in a series on a study of the link between IMF and sporadic-E layers within the polar cap. In Paper I (Voiculescu et al., 2006), an analysis of the sporadic-E data from Thule and Longyearbyen was presented.
T. Nygrén   +4 more
doaj   +1 more source

Vertical fine structure and time evolution of plasma irregularities in the E-s layer observed by a high-resolution Ca+ lidar [PDF]

open access: yes, 2019
The vertical fine structures and the time evolution of plasma irregularities in the sporadic E (E s) layer were observed via calcium ion (Ca+) density measurements using a resonance scattering lidar with a high time-height resolution (5 s and 15 m) at ...
Katsuhiko Tsuno   +9 more
core   +2 more sources

The formation of sporadic E layers by a vortical perturbation excited in a horizontal wind shear flow [PDF]

open access: yesAnnales Geophysicae, 2008
The formation of the mid-latitude sporadic E layers (Es layers) by an atmospheric vortical perturbation excited in a horizontal shear flow (horizontal wind with a horizontal linear shear) is investigated.
G. G. Didebulidze, L. N. Lomidze
doaj   +1 more source

Simultaneous lidar observations of the sporadic Ni layer and sporadic Na layer in the MLT

open access: yesEarth and Planetary Physics
Here we report on simultaneous lidar observations of sporadic Ni (Nis) layers and sporadic Na (Nas) layers in the atmosphere over Yanqing, Beijing (40.42°N, 116.02°E) from April 2019 to October 2022.
ZhiJun Zhao   +5 more
doaj   +1 more source

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