Magnetic field fluctuation properties of coronal mass ejection-driven sheath regions in the near-Earth solar wind

Kilpua, Emilia K. J.; Fontaine, Dominique; Good, Simon W.; Ala-Lahti, Matti; Osmane, Adnane; Palmerio, Erika; Yordanova, Emiliya; Moissard, Clement; Hadid, Lina Z.; Janvier, Miho

doi:https://doi.org/10.5194/angeo-38-999-2020

Articles | Volume 38, issue 5

https://doi.org/10.5194/angeo-38-999-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/angeo-38-999-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 38, issue 5

Regular paper

|

16 Sep 2020

Regular paper |

| 16 Sep 2020

Magnetic field fluctuation properties of coronal mass ejection-driven sheath regions in the near-Earth solar wind

Emilia K. J. Kilpua, Dominique Fontaine, Simon W. Good, Matti Ala-Lahti, Adnane Osmane, Erika Palmerio, Emiliya Yordanova, Clement Moissard, Lina Z. Hadid, and Miho Janvier

Supplement

https://doi.org/10.5194/angeo-38-999-2020-supplement

Data sets

Coordinated Data Analysis Web (CDAWeb) NASA https://cdaweb.sci.gsfc.nasa.gov/index.html/

Short summary

This paper studies magnetic field fluctuations in three turbulent sheath regions ahead of interplanetary coronal mass ejections (ICMEs) in the near-Earth solar wind. Our results show that fluctuation properties vary significantly in different parts of the sheath when compared to solar wind ahead. Turbulence in sheaths resembles that of the slow solar wind in the terrestrial magnetosheath, e.g. regarding compressibility and intermittency, and it often lacks Kolmogorov's spectral indices.