Zobrazeno 1 - 10
of 531
pro vyhledávání: '"A. Belehaki"'
Autor:
A. Karamanos, M. Kanakidou, G. Economou, N. Christou, A. Belehaki, A. F. Bais, V. Amiridis, D. Founda, I. Tsagouri, C. S. Zerefos, E. Gerasopoulos, M. Petrakis, P. Zanis
Publikováno v:
Atmospheric Chemistry and Physics, Vol 8, Iss 17, Pp 5205-5220 (2008)
This paper provides the overview of an integrated, multi-disciplinary effort to study the effects of the 29 March 2006 total solar eclipse on the environment, with special focus on the atmosphere. The eclipse has been visible over the Eastern Mediter
Externí odkaz:
https://doaj.org/article/534bfde99cf04fe8b5304ba408637f6b
Publikováno v:
Annales Geophysicae, Vol 26, Pp 371-386 (2008)
A new method for ionospheric predictions based on time series autoregressive models (AR) that was recently developed to serve the needs of the European Digital Upper Atmosphere Server (DIAS) for short term forecast of the foF2 parameter over Europ
Externí odkaz:
https://doaj.org/article/60a1f5e950c14ca5a9c83cd5ad6dad16
Autor:
C. S. Zerefos, E. Gerasopoulos, I. Tsagouri, B. E. Psiloglou, A. Belehaki, T. Herekakis, A. Bais, S. Kazadzis, C. Eleftheratos, N. Kalivitis, N. Mihalopoulos
Publikováno v:
Atmospheric Chemistry and Physics, Vol 7, Iss 18, Pp 4943-4951 (2007)
This study aims at providing experimental evidence, to support the hypothesis according to which the movement of the moon's shadow sweeping the ozone layer at supersonic speed, during a solar eclipse, creates gravity waves in the atmosphere. An exper
Externí odkaz:
https://doaj.org/article/5722b968cbc44674bb2024ce0c226e02
Autor:
K. Koutroumbas, A. Belehaki
Publikováno v:
Annales Geophysicae, Vol 23, Pp 3035-3042 (2005)
In this paper the problem of one-step ahead prediction of the critical frequency (foF2) of the middle-latitude ionosphere, using time series forecasting methods, is considered. The whole study is based on a sample of about 58000 observations of fo
Externí odkaz:
https://doaj.org/article/a9d7215426cd48bcbb0ad4ff0b601e6a
Publikováno v:
Advances in Radio Science, Vol 2, Pp 293-297 (2004)
Groundbased ionograms measure the Chapman scale height HT at the F2-layer peak that is used to construct the topside profile. After a brief review of the topside model extrapolation technique, comparisons are presented between the modeled profiles wi
Externí odkaz:
https://doaj.org/article/4552277fa637457989f020f3c544a1e8
Autor:
I. Tsagouri, A. Belehaki
Publikováno v:
Annales Geophysicae, Vol 20, Pp 1225-1238 (2002)
True height electron density profiles observed with the Athens Digisonde were analyzed together with geomagnetic data indices for six magnetic storms in September and October 2000 in an effort to define the ionospheric structure during events o
Externí odkaz:
https://doaj.org/article/9562e794bb3d485ab9eb8de5e3bd883b
Publikováno v:
Annales Geophysicae, Vol 16, Pp 1423-1433 (1998)
In this work we examine simultaneous observations from the two geosynchronous satellites GOES-5 and GOES-6 located at 282°E and 265°E respectively, and from middle and low latitude ground observatories located within 250°E and 294°E geographic
Externí odkaz:
https://doaj.org/article/f8fbeef2b4b04d6799b01b6a29bb36cf
Publikováno v:
Annales Geophysicae, Vol 16, Pp 528-541 (1998)
Simultaneous energetic particle and magnetic field observations from the GEOTAIL spacecraft in the distant tail (XGSM≈ –150 Re) have been analysed to study the response of the Earth's magnetotail during a strong substorm (AE ≤ 680 nT). At geosy
Externí odkaz:
https://doaj.org/article/7f9e768b0aba495ca9d395762a00816a
Autor:
Lucilla Alfonsi, Claudio Cesaroni, Manuel Hernandez-Pajares, Elvira Astafyeva, Simon Bufféral, Panagiotis Elias, Anna Belehaki, Tsagouri Ioanna, Heng Yang, Marco Guerra
Publikováno v:
Earth, Planets and Space, Vol 76, Iss 1, Pp 1-14 (2024)
Abstract On 30 October 2020 at 11:51 UT, a magnitude 7.0 earthquake occurred in the Dodecanese sea (37.84°N, 26.81°E, 10 km depth) and generated a tsunami with an observed run-up of more than 1 m on the Turkish coasts. Both the earthquake and the t
Externí odkaz:
https://doaj.org/article/d6473ab59de44a839631d9ee447a8d14
Publikováno v:
Annales Geophysicae, Vol 15, Pp 1515-1531 (1997)
Geotail energetic particle, magnetic field data and plasma observations (EPIC, MGF and CPI experiments) have been examined for a number of energetic particle bursts in the distant tail (120ReGSM|< 130 Re), associated with moving magnetic field str
Externí odkaz:
https://doaj.org/article/b7eca17ab5ce41e9b566227bf2dba429