EGU23-3207, updated on 22 Feb 2023
https://doi.org/10.5194/egusphere-egu23-3207
EGU General Assembly 2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

The change of properties of solar wind turbulence across different types of interplanetary shocks

Byeongseon Park1, Alexander Pitňa1, Jana Šafránková1, Zdeněk Němeček1, Oksana Krupařová2,3,4, and Vratislav Krupař2,3,4
Byeongseon Park et al.
  • 1Charles University, Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Czechia (byeongseon.park@matfyz.cuni.cz)
  • 2Goddard Planetary Heliophysics Institute, University of Maryland, Baltimore, MD 21250, USA
  • 3Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
  • 4Department of Space Physics, Institute of Atmospheric Physics, Czech Academy of Sciences, Prague, Czech Republic

The interaction between interplanetary (IP) shocks and solar wind has been studied for the understanding of energy dissipation mechanisms and the properties of turbulence (e.g., cross helicity, residual energy, proton temperature anisotropy, magnetic compressibility, etc.) within collisionless plasmas. Compared to the study of the interaction with fast shocks, less attention has been directed to the interaction with other types of IP shocks including slow mode shocks (i.e., fast forward, fast reverse, slow forward and slow reverse). We analyze IP shocks observed by the Wind spacecraft from 1995 to 2021. Spectral indices in the ion inertial and kinetic ranges for the upstream and downstream magnetic field fluctuations are estimated by continuous wavelet transform. The changes of the plasma turbulence properties and the distributions of characteristic proton length scales are presented. We preliminarily found that spectral indices in both inertial and kinetic ranges and the distributions of characteristic proton length scales are statistically conserved across the investigated shocks. Mechanisms associated with the energy dissipation can be seen unaffected by shock. Other turbulence properties—cross helicity, residual energy and proton temperature anisotropy—evolve without a significant modification as well.

How to cite: Park, B., Pitňa, A., Šafránková, J., Němeček, Z., Krupařová, O., and Krupař, V.: The change of properties of solar wind turbulence across different types of interplanetary shocks, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-3207, https://doi.org/10.5194/egusphere-egu23-3207, 2023.