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Scale size estimati...
Scale size estimation and flow pattern recognition around a magnetosheath jet
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- Pöppelwerth, Adrian (författare)
- Institute of Geophysics and Extraterrestrial Physics, Technische Universität Braunschweig, Braunschweig, Germany
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- Glebe, Georg (författare)
- Institute of Geophysics and Extraterrestrial Physics, Technische Universität Braunschweig, Braunschweig, Germany; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA
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- Mieth, Johannes Z.D. (författare)
- Institute of Geophysics and Extraterrestrial Physics, Technische Universität Braunschweig, Braunschweig, Germany
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- Koller, Florian (författare)
- Institute of Physics, University of Graz, Graz, Austria
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- Karlsson, Tomas, 1964- (författare)
- KTH,Rymd- och plasmafysik
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- Vörös, Zoltán (författare)
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria; Institute of Earth Physics and Space Science, HUN-REN, Sopron, Hungary
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- Plaschke, Ferdinand (författare)
- Institute of Geophysics and Extraterrestrial Physics, Technische Universität Braunschweig, Braunschweig, Germany
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(creator_code:org_t)
- Copernicus GmbH, 2024
- 2024
- Engelska.
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Ingår i: Annales Geophysicae. - : Copernicus GmbH. - 0992-7689 .- 1432-0576. ; 42:1, s. 271-284
- Relaterad länk:
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https://doi.org/10.5...
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https://urn.kb.se/re...
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https://doi.org/10.5...
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Abstract
Ämnesord
Stäng
- Transient enhancements in the dynamic pressure, so-called magnetosheath jets or simply jets, are abundantly found in the magnetosheath. They travel from the bow shock through the magnetosheath towards the magnetopause. On their way through the magnetosheath, jets disturb the ambient plasma. Multiple studies already investigated their scale size perpendicular to their propagation direction, and almost exclusively in a statistical manner. In this paper, we use multi-point measurements from the Time History of Events and Macroscale Interactions during Substorms (THEMIS) mission to study the passage of a single jet. The method described here allows us to estimate the spatial distribution of the dynamic pressure within the jet. Furthermore, the size perpendicular to the propagation direction can be estimated for different cross sections. In the jet event investigated here, both the dynamic pressure and the perpendicular size increase along the propagation axis from the front part towards the center of the jet and decrease again towards the rear part, but neither monotonically nor symmetrically. We obtain a maximum diameter in the perpendicular direction of about 1 RE and a dynamic pressure of about 6 nPa at the jet center.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
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- art (ämneskategori)
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