Fractal reconnection structures on the magnetopause
Simple laminar flow models of the magnetosheath plasma lead to predictions of large‐scale reconnection structures on the dayside magnetopause. There is observational evidence from the ionosphere that such structures exist. However, in situ observations of the magnetosheath plasma near the magnetopau...
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| Veröffentlicht in: | Geophysical research letters 2005-02, Vol.32 (3), p.np-n/a |
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| creator | Coleman, Iain J. Freeman, Mervyn P. |
| description | Simple laminar flow models of the magnetosheath plasma lead to predictions of large‐scale reconnection structures on the dayside magnetopause. There is observational evidence from the ionosphere that such structures exist. However, in situ observations of the magnetosheath plasma near the magnetopause indicate that the fluid is highly disordered, with the magnetic field orientation in particular being extremely noisy. This raises the question of how coherent large‐scale reconnection structures can be created and persist. This paper shows that, if the apparent noise in the magnetosheath field has the characteristics of fractal turbulence, large‐scale structures can persist even when the apparent noise levels in the draped magnetic field are very large. Furthermore, the common observation of reconnection transients is naturally explained by this model. |
| doi_str_mv | 10.1029/2004GL021779 |
| format | Article |
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There is observational evidence from the ionosphere that such structures exist. However, in situ observations of the magnetosheath plasma near the magnetopause indicate that the fluid is highly disordered, with the magnetic field orientation in particular being extremely noisy. This raises the question of how coherent large‐scale reconnection structures can be created and persist. This paper shows that, if the apparent noise in the magnetosheath field has the characteristics of fractal turbulence, large‐scale structures can persist even when the apparent noise levels in the draped magnetic field are very large. 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Res. Lett</addtitle><description>Simple laminar flow models of the magnetosheath plasma lead to predictions of large‐scale reconnection structures on the dayside magnetopause. There is observational evidence from the ionosphere that such structures exist. However, in situ observations of the magnetosheath plasma near the magnetopause indicate that the fluid is highly disordered, with the magnetic field orientation in particular being extremely noisy. This raises the question of how coherent large‐scale reconnection structures can be created and persist. This paper shows that, if the apparent noise in the magnetosheath field has the characteristics of fractal turbulence, large‐scale structures can persist even when the apparent noise levels in the draped magnetic field are very large. Furthermore, the common observation of reconnection transients is naturally explained by this model.</description><subject>Computational fluid dynamics</subject><subject>Fluid flow</subject><subject>Fractal analysis</subject><subject>Fractals</subject><subject>Magnetic fields</subject><subject>Magnetopause</subject><subject>Magnetosheath</subject><subject>Turbulence</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNp9kMtKxEAQRRtRcBzd-QFZujBa_U4vZdCoBMXxtWzaTkWjmWTsTtD5eyMj4spV3YJziuISsk_hiAIzxwxA5AUwqrXZIBNqhEgzAL1JJgBmzEyrbbIT4ysAcOB0QvhZcL53TRLQd22Lvq-7Nol9GHw_BIzJuPUvmCzcc4t9t3RDxF2yVbkm4t7PnJL7s9O72XlaXOcXs5Mi9UJykWImSyUYd4xxxctS0dJxhcwb_6RQK6pVxZzhpc-Q6aqSEnyJ3nFJBcjxwSk5WN9dhu59wNjbRR09No1rsRuipZIZA1JqPaKHa9SHLsaAlV2GeuHCylKw393Yv92MOFvjH3WDq39Zm88LapgQo5SupTr2-PkrufBmleZa2ser3GY3D_Nbk11awb8Ar-1zbg</recordid><startdate>200502</startdate><enddate>200502</enddate><creator>Coleman, Iain J.</creator><creator>Freeman, Mervyn P.</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>200502</creationdate><title>Fractal reconnection structures on the magnetopause</title><author>Coleman, Iain J. ; Freeman, Mervyn P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4534-e85d6423a22363dd61da36e2c9cb6e76176f2a93dc8e27ff550cdeca351405003</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Computational fluid dynamics</topic><topic>Fluid flow</topic><topic>Fractal analysis</topic><topic>Fractals</topic><topic>Magnetic fields</topic><topic>Magnetopause</topic><topic>Magnetosheath</topic><topic>Turbulence</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Coleman, Iain J.</creatorcontrib><creatorcontrib>Freeman, Mervyn P.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Coleman, Iain J.</au><au>Freeman, Mervyn P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fractal reconnection structures on the magnetopause</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2005-02</date><risdate>2005</risdate><volume>32</volume><issue>3</issue><spage>np</spage><epage>n/a</epage><pages>np-n/a</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>Simple laminar flow models of the magnetosheath plasma lead to predictions of large‐scale reconnection structures on the dayside magnetopause. There is observational evidence from the ionosphere that such structures exist. However, in situ observations of the magnetosheath plasma near the magnetopause indicate that the fluid is highly disordered, with the magnetic field orientation in particular being extremely noisy. This raises the question of how coherent large‐scale reconnection structures can be created and persist. This paper shows that, if the apparent noise in the magnetosheath field has the characteristics of fractal turbulence, large‐scale structures can persist even when the apparent noise levels in the draped magnetic field are very large. Furthermore, the common observation of reconnection transients is naturally explained by this model.</abstract><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2004GL021779</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Geophysical research letters, 2005-02, Vol.32 (3), p.np-n/a |
| issn | 0094-8276 1944-8007 |
| language | eng |
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| source | Wiley-Blackwell AGU Digital Archive; Wiley Open Access; EZB Electronic Journals Library; Wiley Blackwell Journals |
| subjects | Computational fluid dynamics Fluid flow Fractal analysis Fractals Magnetic fields Magnetopause Magnetosheath Turbulence |
| title | Fractal reconnection structures on the magnetopause |
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