Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Multiple ionospheric perturbations during the Saint Patrick’s Day storm 2015 in the European-African sector
Responsible organisation
2016 (English)In: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 121, no 11, 11-333 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2016. Vol. 121, no 11, 11-333 p.
Keyword [en]
Electric fields, Ionospheric storms, Wave propagation, Solar wind/magnetosphere interactions, Magnetic storms and substorms, ionosphere, storm, prompt penetration electric field, TID, TEC
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:polar:diva-3546DOI: 10.1002/2016JA023178OAI: oai:DiVA.org:polar-3546DiVA: diva2:1096856
Note

2016JA023178

Available from: 2017-05-19 Created: 2017-05-19 Last updated: 2017-05-19

Open Access in DiVA

No full text

Other links

Publisher's full texthttp://dx.doi.org/10.1002/2016JA023178
In the same journal
Journal of Geophysical Research - Space Physics
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 8 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf