EGU General Assembly 2020
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Solar and Interplanetary Turbulence: Lagrangian Coherent Structures

Abraham C.L. Chian1,2,3, Luis R. Bellot Rubio4, Heng Q. Feng5, Tiago F. P. Gomes2, Milan Gosic6, Daniela Grasso7, Qiang Hu8, Kanya Kusano3, Rodrigo A. Miranda9, Pablo R. Munoz10, Erico L. Rempel2,11, David Ruffolo12, Suzana S. A. Silva11, and De J. Wu13
Abraham C.L. Chian et al.
  • 1University of Adelaide, School of Mathematical Sciences, Adelaide, Australia (
  • 2National Institute for Space Research, Sao Jose dos Campos, Brazil
  • 3ISEE, Nagoya University, Japan
  • 4Institute of Astrophysics of Andalucia, Granada, Spain
  • 5Luoyang Normal University, Luoyang, China
  • 6Lockheed Martin Solar and Astrophysics Laboratory, Palo Alto, USA
  • 7ISC-CNR and Politecnico di Torino, Torino, Italy
  • 8University of Alabama in Huntsville, Huntsville, USA
  • 9University of Brasilia, Brasilia, Brazil
  • 10University of La Serena, La Serena, Chile
  • 11Institute of Aeronautical Technology, Sao Jose dos Campos, Brazil
  • 12Mahidol University, Bangkok, Thailand
  • 13Purple Mountain Observatory, Nanjing, China

The dynamics of solar and interplanetary plasmas is governed by coherent structures such as current sheets and magnetic flux ropes which are responsible for the genesis of intermittent turbulence via magnetic reconnections in solar supergranular junctions, solar coronal loops, the shock-sheath region of an interplanetary coronal mass ejection, and the interface region of two interplanetary magnetic flux ropes. Lagrangian coherent structures provide a new powerful technique to detect time- or space-dependent transport barriers, and objective (i.e., frame invariant) kinematic and magnetic vortices in space plasma turbulence. We discuss the basic concepts of Lagrangian coherent structures in plasmas based on the computation of the finite-time Lyapunov exponent, the Lagrangian averaged vorticity deviation and the integrated averaged current deviation, as well as their applications to numerical simulations of MHD turbulence and space and ground observations.

How to cite: Chian, A. C. L., Bellot Rubio, L. R., Feng, H. Q., Gomes, T. F. P., Gosic, M., Grasso, D., Hu, Q., Kusano, K., Miranda, R. A., Munoz, P. R., Rempel, E. L., Ruffolo, D., Silva, S. S. A., and Wu, D. J.: Solar and Interplanetary Turbulence: Lagrangian Coherent Structures , EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-4289,, 2020


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