On the 2015 St. Patrick's Storm Turbulent State of the Ionosphere: Hints From the Swarm Mission.
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| Title: | On the 2015 St. Patrick's Storm Turbulent State of the Ionosphere: Hints From the Swarm Mission. |
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| Authors: | De Michelis, P.1 paola.demichelis@ingv.it, Pignalberi, A.1, Consolini, G.2, Coco, I.1, Tozzi, R.1, Pezzopane, M.1, Giannattasio, F.1, Balasis, G.3 |
| Source: | Journal of Geophysical Research. Space Physics. Aug2020, Vol. 125 Issue 8, p1-14. 14p. |
| Subject Terms: | *Ionosphere, Fluctuations (Physics), Magnetohydrodynamics, Ionospheric plasma, Artificial satellites, Electron density |
| Abstract: | The scaling features of electron density fluctuations during the St. Patrick's magnetic storm (17 March 2015) are analyzed to try to characterize the possible turbulent nature of the ionosphere during the development of the geomagnetic storm. The electron density values recorded by two of the three satellites of Swarm constellation during a period of 7 days (16–22 March 2015) around the storm peak are analyzed at middle‐ and high‐latitude regions in both hemispheres. The analysis reveals interesting patterns in the scaling properties of electron density fluctuations and a possible explanation for the occurrence of high values of the Rate of change Of the electron Density Index (RODI). Indeed, the obtained results seem to suggest that very high values of RODI, which describes the structuring of the plasma within a fixed time and is used as an ionospheric disturbance index, are correlated with the antipersistent character of electron density fluctuations and with the values around 5/3 of the power spectral density scaling exponent. These features are independent of the different phases of the analyzed geomagnetic storm and seem to support the idea of a fluid and/or magnetohydrodynamic turbulence as the main responsible of the high values of RODI recorded at high latitudes in the auroral and polar cap regions. Plain Language Summary: Electron density fluctuations characterizing the ionospheric plasma during the St. Patrick's geomagnetic storm occurred on 17 March 2015 are analyzed to investigate their possible turbulent nature. To perform this study, electron density values recorded by two of the three satellites of the Swarm constellation are considered at middle and high latitudes of both hemispheres between 16 and 22 March 2015. Results show that electron density fluctuations present interesting patterns and that high values of the Rate Of change of electron Density Index (RODI), which is used as an ionospheric disturbance index, may be related to a turbulent dynamics of the ionosphere. Specifically, independently of the different phases of the analyzed geomagnetic storm, the observed features seem to support the idea of a fluid and/or magnetohydrodynamic turbulence as the main cause of the high values of RODI recorded at high latitudes in the auroral and polar cap regions. Key Points: Self‐similarity/affinity nature of the plasma density fluctuations in the F region of middle‐ and high‐latitude ionospherePlasma density fluctuations at high latitudes in the auroral and polar cap regions seem to be related to a turbulent ionospheric dynamicsHigh values of RODI can be a proxy of the occurrence of ionospheric turbulence [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Geophysical Research. Space Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 145340417 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: On the 2015 St. Patrick's Storm Turbulent State of the Ionosphere: Hints From the Swarm Mission. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22De+Michelis%2C+P%2E%22">De Michelis, P.</searchLink><relatesTo>1</relatesTo><i> paola.demichelis@ingv.it</i><br /><searchLink fieldCode="AR" term="%22Pignalberi%2C+A%2E%22">Pignalberi, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Consolini%2C+G%2E%22">Consolini, G.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Coco%2C+I%2E%22">Coco, I.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tozzi%2C+R%2E%22">Tozzi, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Pezzopane%2C+M%2E%22">Pezzopane, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Giannattasio%2C+F%2E%22">Giannattasio, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Balasis%2C+G%2E%22">Balasis, G.</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Geophysical+Research%2E+Space+Physics%22">Journal of Geophysical Research. Space Physics</searchLink>. Aug2020, Vol. 125 Issue 8, p1-14. 14p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Ionosphere%22">Ionosphere</searchLink><br /><searchLink fieldCode="DE" term="%22Fluctuations+%28Physics%29%22">Fluctuations (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetohydrodynamics%22">Magnetohydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Ionospheric+plasma%22">Ionospheric plasma</searchLink><br /><searchLink fieldCode="DE" term="%22Artificial+satellites%22">Artificial satellites</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+density%22">Electron density</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The scaling features of electron density fluctuations during the St. Patrick's magnetic storm (17 March 2015) are analyzed to try to characterize the possible turbulent nature of the ionosphere during the development of the geomagnetic storm. The electron density values recorded by two of the three satellites of Swarm constellation during a period of 7 days (16–22 March 2015) around the storm peak are analyzed at middle‐ and high‐latitude regions in both hemispheres. The analysis reveals interesting patterns in the scaling properties of electron density fluctuations and a possible explanation for the occurrence of high values of the Rate of change Of the electron Density Index (RODI). Indeed, the obtained results seem to suggest that very high values of RODI, which describes the structuring of the plasma within a fixed time and is used as an ionospheric disturbance index, are correlated with the antipersistent character of electron density fluctuations and with the values around 5/3 of the power spectral density scaling exponent. These features are independent of the different phases of the analyzed geomagnetic storm and seem to support the idea of a fluid and/or magnetohydrodynamic turbulence as the main responsible of the high values of RODI recorded at high latitudes in the auroral and polar cap regions. Plain Language Summary: Electron density fluctuations characterizing the ionospheric plasma during the St. Patrick's geomagnetic storm occurred on 17 March 2015 are analyzed to investigate their possible turbulent nature. To perform this study, electron density values recorded by two of the three satellites of the Swarm constellation are considered at middle and high latitudes of both hemispheres between 16 and 22 March 2015. Results show that electron density fluctuations present interesting patterns and that high values of the Rate Of change of electron Density Index (RODI), which is used as an ionospheric disturbance index, may be related to a turbulent dynamics of the ionosphere. Specifically, independently of the different phases of the analyzed geomagnetic storm, the observed features seem to support the idea of a fluid and/or magnetohydrodynamic turbulence as the main cause of the high values of RODI recorded at high latitudes in the auroral and polar cap regions. Key Points: Self‐similarity/affinity nature of the plasma density fluctuations in the F region of middle‐ and high‐latitude ionospherePlasma density fluctuations at high latitudes in the auroral and polar cap regions seem to be related to a turbulent ionospheric dynamicsHigh values of RODI can be a proxy of the occurrence of ionospheric turbulence [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Geophysical Research. Space Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1029/2020JA027934 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 1 Subjects: – SubjectFull: Ionosphere Type: general – SubjectFull: Fluctuations (Physics) Type: general – SubjectFull: Magnetohydrodynamics Type: general – SubjectFull: Ionospheric plasma Type: general – SubjectFull: Artificial satellites Type: general – SubjectFull: Electron density Type: general Titles: – TitleFull: On the 2015 St. Patrick's Storm Turbulent State of the Ionosphere: Hints From the Swarm Mission. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: De Michelis, P. – PersonEntity: Name: NameFull: Pignalberi, A. – PersonEntity: Name: NameFull: Consolini, G. – PersonEntity: Name: NameFull: Coco, I. – PersonEntity: Name: NameFull: Tozzi, R. – PersonEntity: Name: NameFull: Pezzopane, M. – PersonEntity: Name: NameFull: Giannattasio, F. – PersonEntity: Name: NameFull: Balasis, G. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2020 Type: published Y: 2020 Identifiers: – Type: issn-print Value: 21699380 Numbering: – Type: volume Value: 125 – Type: issue Value: 8 Titles: – TitleFull: Journal of Geophysical Research. Space Physics Type: main |
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