Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Valery V. Hegai"'
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 34, Iss 4, Pp 251-256 (2017)
The electric coupling between the lithosphere and the ionosphere is examined. The electric field is considered as a timevarying irregular vertical Coulomb field presumably produced on the Earth’s surface before an earthquake within its epicentral z
Externí odkaz:
https://doaj.org/article/0a94c0974a2f4801b503a09ff2916982
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 34, Iss 4, Pp 245-250 (2017)
As a part of collaborative efforts to understand ionospheric irregularities, the Korea ionospheric scintillation sites (KISS) network has been built based on global positioning system (GPS) receivers with sampling rates higher than 1 Hz. We produce t
Externí odkaz:
https://doaj.org/article/6f45c10f91b448ce88f3086e9e02486a
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 34, Iss 1, Pp 1-5 (2017)
The F2-layer critical frequency (foF2) data from several ionosondes are employed to study the long-distance effect of the M8.8 Chile Earthquake of February 27, 2010, on the F2 layer. Significant perturbations of the peak F2-layer electron density h
Externí odkaz:
https://doaj.org/article/05a36cc0840a4a86ab779ca874d5f280
Autor:
Vitaly P. Kim, Valery V. Hegai
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 33, Iss 4, Pp 273-278 (2016)
December 2009 was one of the quietest (monthly Ap=2) months over the last eight decades. It provided an excellent opportunity to study the day-to-day variability of the F2 layer with the smallest contribution due to geomagnetic activity. With this
Externí odkaz:
https://doaj.org/article/edbba351c4b04847b549f38f7a3063ea
Autor:
Valery V. Hegai, Vitaly P. Kim
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 33, Iss 3, Pp 207-210 (2016)
Under the assumption of the presence of a medium-scale E × B drift vortex of plasma in the daytime midlatitude F region, and using a simplified ionospheric model, we demonstrate that the E × B drift produces noticeable perturbations in the horizo
Externí odkaz:
https://doaj.org/article/7d356a852851433ca395cd3490922c32
Autor:
Vitaly P. Kim, Valery V. Hegai
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 33, Iss 1, Pp 13-19 (2016)
In recent years, there has been renewed activity in the study of local plasma density enhancements in the low latitude F region ionosphere (low latitude plasma blobs). Satellite, all-sky airglow imager, and radar measurements have identified the ch
Externí odkaz:
https://doaj.org/article/455bd277afa74c5bac86c1bfbb5f2197
Autor:
Vitaly P. Kim, Valery V. Hegai
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 32, Iss 4, Pp 297-304 (2015)
In this study, we documented the midlatitude F2-layer response to five strong geomagnetic storms with minimum Dst < –150 nT that occurred in solar minimum years using hourly values of the F2-layer critical frequency (foF2) from four ionosondes lo
Externí odkaz:
https://doaj.org/article/8fd4738d6c0f444098891aa50605235b
Autor:
Lidiya P. Korsunova, Valery V. Hegai
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 32, Iss 2, Pp 137-140 (2015)
The results of the study of ionospheric variations in the summer months of 1998-2002 at an ionospheric station of vertical sounding "Petropavlovsk-Kamchatsky" are presented. Anomalous variations of virtual sporadic-E height (h'Es), Es blanketing fr
Externí odkaz:
https://doaj.org/article/c91cd58b85b948c9bf393e00b2b92721
Autor:
Vitaly P. Kim, Valery V. Hegai
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 32, Iss 2, Pp 141-144 (2015)
In this paper we study the transmission of the electrostatic field due to coulomb charges of an individual thundercloud into the midlatitude ionosphere, taking into account the total geomagnetic field integrated Pedersen conductivity of the ionosph
Externí odkaz:
https://doaj.org/article/b28ac3486914420aa08b180861758601
Publikováno v:
JOURNAL OF ASTRONOMY AND SPACE SCIENCES(34): 4
Journal of Astronomy and Space Sciences, Vol 34, Iss 4, Pp 245-250 (2017)
Journal of Astronomy and Space Sciences, Vol 34, Iss 4, Pp 245-250 (2017)
As a part of collaborative efforts to understand ionospheric irregularities, the Korea ionospheric scintillation sites (KISS) network has been built based on global positioning system (GPS) receivers with sampling rates higher than 1 Hz. We produce t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::e6b76e395af45833d02ae02633ab9ad1
http://open-repository.kisti.re.kr/cube/handle/open_repository/479639.do
http://open-repository.kisti.re.kr/cube/handle/open_repository/479639.do
