Jiang, Wence;
Li, Hui;
Andres, Nahuel;
Hadid, Lina;
Verscharen, Daniel;
Wang, Chi;
(2025)
Significant Amplification of Turbulent Energy Dissipation Through the Shock Transition at Mars.
Geophysical Research Letters
, 52
(21)
, Article e2025GL117801. 10.1029/2025GL117801.
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Abstract
Turbulence is fundamental to energy transfer across scales in space and astrophysical plasmas. Bow shock interactions have long been hypothesized to significantly modify turbulence in planetary environments, yet the quantification of such effects and their parametric dependencies remain largely unaddressed. Using in situ long‐term high‐time resolution measurements from NASA's MAVEN mission, we report the first observational characterization of the evolution and parametric dependence of the turbulence energy cascade rate εC at magnetohydrodynamic (MHD) scales. Key findings reveal an averaged three‐order‐ of‐magnitude enhancement in εC when transitioning from the solar wind to the magnetosheath. Notably, downstream measurements of oblique and quasi‐perpendicular shocks exhibit higher energy dissipation rates than those of quasi‐parallel configurations. These results provide the first direct evidence linking shock obliquity to turbulence amplification, offering key insights into shock‐mediated turbulence in similar but inaccessible systems.
| Type: | Article |
|---|---|
| Title: | Significant Amplification of Turbulent Energy Dissipation Through the Shock Transition at Mars |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/2025GL117801 |
| Publisher version: | https://doi.org/10.1029/2025GL117801 |
| Language: | English |
| Additional information: | © 2025. The Author(s). This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
| Keywords: | Science & Technology, Physical Sciences, Geosciences, Multidisciplinary, Geology, turbulence, shock, Mars, space plasma, SOLAR-WIND, QUASI-PARALLEL, MARTIAN SHOCK, WAVES, UPSTREAM, MAGNETOSPHERE, MAGNETOSHEATH, FLUCTUATIONS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10216877 |
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