dorsal/arxiv
View SchemaWavelet analysis of magnetic turbulence in the Earth's plasma sheet
| Authors | W. Baumjohann, R. Nakamura, A. Runov, M. Volwerk, T. L. Zhang, A. Balogh |
|---|---|
| Categories | |
| ArXiv ID | physics/0410073 |
| URL | https://arxiv.org/abs/physics/0410073 |
| DOI | 10.1063/1.1667499 |
| Journal | Physics of Plasmas, 11, 1333, 2004 |
Abstract
Recent studies provide evidence for the multi-scale nature of magnetic turbulence in the plasma sheet. Wavelet methods represent modern time series analysis techniques suitable for the description of statistical characteristics of multi-scale turbulence. Cluster FGM (fluxgate magnetometer) magnetic field high-resolution (~67 Hz) measurements are studied during an interval in which the spacecraft are in the plasma sheet. As Cluster passes through different plasma regions, physical processes exhibit non-steady properties on magnetohydrodynamic (MHD) and small, possibly kinetic scales. As a consequence, the implementation of wavelet-based techniques becomes complicated due to the statistically transitory properties of magnetic fluctuations and finite size effects. Using a supervised multi-scale technique which allows existence test of moments, the robustness of higher-order statistics is investigated. On this basis the properties of magnetic turbulence are investigated for changing thickness of the plasma sheet.
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"abstract": "Recent studies provide evidence for the multi-scale nature of magnetic\nturbulence in the plasma sheet. Wavelet methods represent modern time series\nanalysis techniques suitable for the description of statistical characteristics\nof multi-scale turbulence. Cluster FGM (fluxgate magnetometer) magnetic field\nhigh-resolution (~67 Hz) measurements are studied during an interval in which\nthe spacecraft are in the plasma sheet. As Cluster passes through different\nplasma regions, physical processes exhibit non-steady properties on\nmagnetohydrodynamic (MHD) and small, possibly kinetic scales. As a consequence,\nthe implementation of wavelet-based techniques becomes complicated due to the\nstatistically transitory properties of magnetic fluctuations and finite size\neffects. Using a supervised multi-scale technique which allows existence test\nof moments, the robustness of higher-order statistics is investigated. On this\nbasis the properties of magnetic turbulence are investigated for changing\nthickness of the plasma sheet.",
"arxiv_id": "physics/0410073",
"authors": [
"W. Baumjohann",
"R. Nakamura",
"A. Runov",
"M. Volwerk",
"T. L. Zhang",
"A. Balogh"
],
"categories": [
"physics.space-ph",
"physics.plasm-ph"
],
"doi": "10.1063/1.1667499",
"journal_ref": "Physics of Plasmas, 11, 1333, 2004",
"title": "Wavelet analysis of magnetic turbulence in the Earth\u0027s plasma sheet",
"url": "https://arxiv.org/abs/physics/0410073"
},
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