EGU23-7257
https://doi.org/10.5194/egusphere-egu23-7257
EGU General Assembly 2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Energy Conversion Associated with Flux Transfer Events at Earth’s Magnetopause

Souhail Dahani1, Benoit Lavraud1,2, Vincent Génot1, Sergio Toledo-Redondo3, Rungployphan Kieokaew1, Naïs Fargette1,4, Daniel Gershman5, Barbara Giles5, Roy Torbert6, and Jim Burch7
Souhail Dahani et al.
  • 1IRAP, University of Toulouse 3, CNRS, CNES, Toulouse, France
  • 2LAB, University of Bordeaux, Bordeaux, France
  • 3Department of Electromagnetism, University of Murcia, Murcia, Spain
  • 4The Blackett Laboratory, Imperial College, London, United Kingdom
  • 5NASA Goddard Space Flight Center, Greenbelt, MD, USA
  • 6University of New Hampshire, Durham, NH, USA
  • 7Southwest Research Institute, San Antonio, TX, USA

Flux Transfer Events (FTEs) are transient phenomena generated at the dayside magnetopause as a result of magnetic reconnection. FTEs have a significant role in the transfer of momentum and energy into the magnetosphere. We study here, in a multifluid framework, how the energy is converted within FTEs and their surrounding plasma. In particular we investigate how the plasma gains or loses kinetic energy through electric and/or pressure gradient terms. We also investigate the terms that control how the internal energy of the plasma is gained or dissipated through the pressure work term. Using observations from Magnetospheric MultiScale (MMS), we perform a statistical study based on an existing FTE catalog (Fargette et al., 2020). We analyze FTEs with or without internal current sheets. We discuss the contribution of the different terms in the energy conversion process separately for ions and electrons and as a function of location within the FTE. We analyze and compare the results found for FTEs’ intervals with magnetosheath intervals (Wang et al. 2021), taking into account their locations, using probability distribution functions of the various energy terms measured in each interval. This work contributes to a better understanding of energy conversion processes associated with FTEs at the magnetopause.

How to cite: Dahani, S., Lavraud, B., Génot, V., Toledo-Redondo, S., Kieokaew, R., Fargette, N., Gershman, D., Giles, B., Torbert, R., and Burch, J.: Energy Conversion Associated with Flux Transfer Events at Earth’s Magnetopause, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-7257, https://doi.org/10.5194/egusphere-egu23-7257, 2023.