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  The Role of Dipole Tilt on External Driving of EMIC Waves in the Magnetosphere

Johnson, J., Kim, E.-H. (2023): The Role of Dipole Tilt on External Driving of EMIC Waves in the Magnetosphere, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3666

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020876 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020876_1
Genre: Conference Paper

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 Creators:
Johnson, Jay1, Author
Kim, Eun-Hwa1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: We examine the role of dipole tilt on solar wind driving of electromagnetic ion cyclotron (EMIC) waves in the magnetosphere using an advanced full-wave simulation code---Petra-M. While very little wave power reaches the inner magnetosphere without tilt effects, a tilted dipole field dramatically increases the efficiency of the coupling process. Solar wind fluctuations incident at high magnetic latitude can reach ionospheric altitudes more efficiently as they mode-convert to linearly polarized field-aligned propagating waves at the Alfvén and IIH resonances. We discuss implications of these results for seasonal and diurnal biases on externally driver EMIC waves and implications for radiation belt loss processes.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
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 Identifiers: DOI: 10.57757/IUGG23-3666
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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