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Multiple Ionospheric Perturbations during the Saint Patrick's Day Storm 2015 in the European-African Sector

Borries, Claudia and Mahrous, A. M. and Ellahouny, Nada M. and Badeke, Ronny (2016) Multiple Ionospheric Perturbations during the Saint Patrick's Day Storm 2015 in the European-African Sector. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 121. Wiley. DOI: 10.1002/2016JA023178 ISSN 2169-9380

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Strong ionospheric perturbations were generated by the intense geomagnetic storm on 17 March 2015. In this article, we are studying perturbations in the European-African sector observed in the total electron content (TEC). Focal points are wavelike phenomena considered as large-scale traveling ionospheric disturbances (LSTIDs). In the European-African sector, the storm produced three different types of LSTIDs: (1) a concurrent TEC perturbation at all latitudes simultaneously; (2) one LSTID propagating toward the equator, having very large wave parameters (wavelength: ≈3600 km, period: ≈120 min, and speed: ≈500 m/s); and (3) several LSTIDs propagating toward the equator with typical wave parameters (wavelength: ≈2100 km, period: ≈60 min, and speed ≈600 m/s). The third type of LSTIDs is considered to be exited as most LSTIDs either due to variations in the Joule heating or variations in the Lorentz force, whereas the first two perturbation types are rather unusual in their appearance. They occurred during the partial recovery phase when the geomagnetic perturbations were minor and the interplanetary magnetic field turned northward. A westward prompt penetration electric field is considered to excite the first perturbation signature, which indicates a sudden TEC depletion. For the second LSTID type, variations in the Lorentz force because of perturbed electric fields and a minor particle precipitation effect are extracted as possible excitation mechanisms.

Item URL in elib:https://elib.dlr.de/105282/
Document Type:Article
Title:Multiple Ionospheric Perturbations during the Saint Patrick's Day Storm 2015 in the European-African Sector
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Borries, Claudiaclaudia.borries (at) dlr.dehttps://orcid.org/0000-0001-9948-3353
Mahrous, A. M.Helwan University Cairo, EgyptUNSPECIFIED
Ellahouny, Nada M.Helwan University Cairo, EgyptUNSPECIFIED
Badeke, Ronnyronny.badeke (at) dlr.deUNSPECIFIED
Date:1 November 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1002/2016JA023178
Keywords:ionosphere, storm, prompt penetration electric field, Travelling Ionospheric Disturbance, TID, Total Electron Content, 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 > Navigation
Deposited By: Borries, Dr. Claudia
Deposited On:29 Nov 2016 11:42
Last Modified:08 Mar 2018 18:35

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