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Sign Singularity of...
Sign Singularity of the Local Energy Transfer in Space Plasma Turbulence
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- Sorriso-Valvo, Luca (author)
- Escuela Politecn Natl, Dept Fis, Quito, Ecuador;CNR, ISTP, Bari, Italy
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- De Vita, Gaetano (author)
- CNR, ISTP, Bari, Italy
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- Fraternale, Federico (author)
- Politecn Torino, Dipartimento Sci Applicata & Tecnol, Turin, Italy
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- Gurchumelia, Alexandre (author)
- Iv Javakhishvili Tbilisi State Univ, M Nadia Inst Geophys, Tbilisi, Georgia
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- Perri, Silvia (author)
- Univ Calabria, Dipartimento Fis, Arcavacata Di Rende, Italy
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- Nigro, Giuseppina (author)
- Univ Calabria, Dipartimento Fis, Arcavacata Di Rende, Italy
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- Catapano, Filomena (author)
- Serco Italia ESA ESRIN, Frascati, Italy
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- Retino, Alessandro (author)
- Sorbonne Univ, Ecole Poliechn, LPP CNRS, Paris, France
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- Chen, Christopher H. K. (author)
- Queen Mary Univ London, Sch Phys & Astron, London, England
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- Yordanova, Emiliya (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Pezzi, Oreste (author)
- Gran Sasso Sci Inst, Laquila, Italy;INFN, Lab Nazl Gran Sasso, Assergi, Italy
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- Chargazia, Khatuna (author)
- Iv Javakhishvili Tbilisi State Univ, M Nadia Inst Geophys, Tbilisi, Georgia;Iv Javakhishvili Tbilisi State Univ, I Vekua Inst Appl Math, Tbilisi, Georgia
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- Kharshiladze, Oleg (author)
- Iv Javakhishvili Tbilisi State Univ, M Nadia Inst Geophys, Tbilisi, Georgia
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- Kvaratskhelia, Diana (author)
- Iv Javakhishvili Tbilisi State Univ, M Nadia Inst Geophys, Tbilisi, Georgia;Sokhumi State Univ, Tbilisi, Georgia
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- Vsconez, Christian L. (author)
- Escuela Politecn Natl, Dept Fis, Quito, Ecuador
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- Marino, Raffaele (author)
- Univ Claude Bernard Lyon, Ecole Cent Lyon, Lab Mecan Fluides & Acoust, CNRS,INSA Lyon, Ecully, France
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- Le Contel, Olivier (author)
- Sorbonne Univ, Ecole Poliechn, LPP CNRS, Paris, France
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- Giles, Barbara (author)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA
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- Moore, Thomas E. (author)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA
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- Torbert, Roy B. (author)
- Univ New Hampshire, Space Sci Ctr, Durham, NH 03824 USA
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- Burch, James L. (author)
- Southwest Res Inst, San Antonio, TX USA
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(creator_code:org_t)
- 2019-08-20
- 2019
- English.
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In: Frontiers in Physics. - : FRONTIERS MEDIA SA. - 2296-424X. ; 7
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Abstract
Subject headings
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- In weakly collisional space plasmas, the turbulent cascade provides most of the energy that is dissipated at small scales by various kinetic processes. Understanding the characteristics of such dissipative mechanisms requires the accurate knowledge of the fluctuations that make energy available for conversion at small scales, as different dissipation processes are triggered by fluctuations of a different nature. The scaling properties of different energy channels are estimated here using a proxy of the local energy transfer, based on the third-order moment scaling law for magnetohydrodynamic turbulence. In particular, the sign-singularity analysis was used to explore the scaling properties of the alternating positive-negative energy fluxes, thus providing information on the structure and topology of such fluxes for each of the different type of fluctuations. The results show the highly complex geometrical nature of the flux, and that the local contributions associated with energy and cross-helicity non-linear transfer have similar scaling properties. Consequently, the fractal properties of current and vorticity structures are similar to those of the Alfvenic fluctuations.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- turbulence
- dissipation
- space plasmas
- magnetosphere
- singularity
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Sorriso-Valvo, L ...
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De Vita, Gaetano
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Fraternale, Fede ...
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Gurchumelia, Ale ...
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Perri, Silvia
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Nigro, Giuseppin ...
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Catapano, Filome ...
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Retino, Alessand ...
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Chen, Christophe ...
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Yordanova, Emili ...
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Pezzi, Oreste
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Chargazia, Khatu ...
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Kharshiladze, Ol ...
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Kvaratskhelia, D ...
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Vsconez, Christi ...
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Marino, Raffaele
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Le Contel, Olivi ...
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Giles, Barbara
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Moore, Thomas E.
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Torbert, Roy B.
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Burch, James L.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Frontiers in Phy ...
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Uppsala University