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Signature of Gravity Waves and Ionospheric Perturbations over European and North African region during the Solar Eclipse of 1 August 2008

Mahrous, A. M. and Hoque, Mohammed Mainul and Desoky, Eman (2018) Signature of Gravity Waves and Ionospheric Perturbations over European and North African region during the Solar Eclipse of 1 August 2008. Journal of Atmospheric and Solar-Terrestrial Physics, pp. 56-63. Elsevier. DOI: 10.1016/j.jastp.2018.03.010 ISSN 1364-6826

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Official URL: https://doi.org/10.1016/j.jastp.2018.03.010

Abstract

Solar eclipses provide unique chances to study the ionospheric/thermospheric response to solar radiation changes. The solar eclipse of 1 August 2008 was an outstanding event since it has occurred during the deep minimum of the solar cycle 23. The ionospheric behavior during that event has been investigated using global GPS-Total Electron Content (TEC) maps, COSMIC satellite measurements and Coherent Ionospheric Doppler Radar (CIDR). We analyzed the behavior of total ionospheric ionization over European and North African region by reconstructing TEC maps and differential TEC maps. TEC estimation showed that the total ionization reduces up to 30% at high latitude region during the eclipse as a function of obscuration. COSMIC observations showed a height profile of percentage reduction in electron density with a maximum reduction at the F2 layer of about 30%. The CIDR system allowed us to study the spatial changes of the ionospheric F2 layer during the passage of the solar eclipse which revealed many interesting features of horizontally-propagating gravity waves with wavelength (λ) about 752.39 km and velocity ~ 151.28 km/min associated with the solar eclipse. The wavelet analysis displays the existence of periodic waves of ~5 min period at F-region altitude and wave like features shown in the diurnal variation of GPS TEC during the eclipse day.

Item URL in elib:https://elib.dlr.de/123725/
Document Type:Article
Title:Signature of Gravity Waves and Ionospheric Perturbations over European and North African region during the Solar Eclipse of 1 August 2008
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mahrous, A. M.Helwan University Cairo, EgyptUNSPECIFIED
Hoque, Mohammed MainulMainul.Hoque (at) dlr.dehttps://orcid.org/0000-0001-5134-4901
Desoky, EmanHelwan University Cairo, EgyptUNSPECIFIED
Date:October 2018
Journal or Publication Title:Journal of Atmospheric and Solar-Terrestrial Physics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.jastp.2018.03.010
Page Range:pp. 56-63
Publisher:Elsevier
ISSN:1364-6826
Status:Published
Keywords:Solar eclipse, Gravity waves, GPS, CIDR, TEC
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Ionosphäre
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation
Institute of Communication and Navigation > Navigation
Deposited By: Hoque, Mohammed Mainul
Deposited On:28 Nov 2018 10:46
Last Modified:10 Jul 2019 11:25

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