Ohmic heating as evidence for strong field-aligned currents in filamentary aurora
A large increase in electron temperature measured in filamentary aurora with the European incoherent scatter radar has been modeled with a one‐dimensional electron transport and ion chemistry code. To account for the observed changes in electron temperature, while also reproducing the measured E reg...
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| Veröffentlicht in: | Journal of Geophysical Research 2001-02, Vol.106 (A2), p.1785-1794 |
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| container_end_page | 1794 |
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| container_issue | A2 |
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| container_title | Journal of Geophysical Research |
| container_volume | 106 |
| creator | Lanchester, B. S. Rees, M. H. Lummerzheim, D. Otto, A. Sedgemore‐Schulthess, K. J. F. Zhu, H. McCrea, I. W. |
| description | A large increase in electron temperature measured in filamentary aurora with the European incoherent scatter radar has been modeled with a one‐dimensional electron transport and ion chemistry code. To account for the observed changes in electron temperature, while also reproducing the measured E region electron density profiles, a source of electron heating is required in addition to local heating from energy degradation of the precipitating electrons. We show that ohmic heating in a strong field‐aligned current can account for the required heat source. |
| doi_str_mv | 10.1029/1999JA000292 |
| format | Article |
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S. ; Rees, M. H. ; Lummerzheim, D. ; Otto, A. ; Sedgemore‐Schulthess, K. J. F. ; Zhu, H. ; McCrea, I. W.</creator><creatorcontrib>Lanchester, B. S. ; Rees, M. H. ; Lummerzheim, D. ; Otto, A. ; Sedgemore‐Schulthess, K. J. F. ; Zhu, H. ; McCrea, I. W.</creatorcontrib><description>A large increase in electron temperature measured in filamentary aurora with the European incoherent scatter radar has been modeled with a one‐dimensional electron transport and ion chemistry code. To account for the observed changes in electron temperature, while also reproducing the measured E region electron density profiles, a source of electron heating is required in addition to local heating from energy degradation of the precipitating electrons. We show that ohmic heating in a strong field‐aligned current can account for the required heat source.</description><identifier>ISSN: 0148-0227</identifier><identifier>EISSN: 2156-2202</identifier><identifier>DOI: 10.1029/1999JA000292</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>Airglow. 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We show that ohmic heating in a strong field‐aligned current can account for the required heat source.</description><subject>Airglow. Aurora</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>External geophysics</subject><subject>Physics of the high neutral atmosphere</subject><issn>0148-0227</issn><issn>2156-2202</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNqFkEtLAzEUhYMoWKo7f8CA4MrRPCeTZWltVaSiKC5DJnOj0elMTaY-_r2RSnGl2dzcm-8cbg5CBwSfEEzVKVFKXY4wTne6hQaUiCKnFNNtNMCElzmmVO6i_RifE4O5KDgmA3Rz_bTwNnsC0_v2MTMxgzdfQ2shc13IYh-6NHYemjo3jX9soc7sKgRo-5j5Nr00ZpEaEz4zswpdMHtox5kmwv5PHaL76dnd-Dy_up5djEdXueWcFHll0lFMci4q6jDYumKlcGnjSoFUAjvMFSFQUQVWKicFK4RRhknMayeADdHR2ncZutcVxF4vfLTQNKaFbhU1LWRRcs7_BUnJVUkVSeDxGrShizGA08vgF-lnmmD9nbH-nXHCD398TbSmccG01seNRpFSiG-Kral338Dnn476cnY7IoKJIqnytcrHHj42KhNedCGZFPphPtPz-e14Mp9O9Ix9ATJRmIk</recordid><startdate>20010201</startdate><enddate>20010201</enddate><creator>Lanchester, B. S.</creator><creator>Rees, M. 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W.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of Geophysical Research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lanchester, B. S.</au><au>Rees, M. H.</au><au>Lummerzheim, D.</au><au>Otto, A.</au><au>Sedgemore‐Schulthess, K. J. F.</au><au>Zhu, H.</au><au>McCrea, I. W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ohmic heating as evidence for strong field-aligned currents in filamentary aurora</atitle><jtitle>Journal of Geophysical Research</jtitle><addtitle>J. Geophys. Res</addtitle><date>2001-02-01</date><risdate>2001</risdate><volume>106</volume><issue>A2</issue><spage>1785</spage><epage>1794</epage><pages>1785-1794</pages><issn>0148-0227</issn><eissn>2156-2202</eissn><abstract>A large increase in electron temperature measured in filamentary aurora with the European incoherent scatter radar has been modeled with a one‐dimensional electron transport and ion chemistry code. To account for the observed changes in electron temperature, while also reproducing the measured E region electron density profiles, a source of electron heating is required in addition to local heating from energy degradation of the precipitating electrons. We show that ohmic heating in a strong field‐aligned current can account for the required heat source.</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/1999JA000292</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0148-0227 |
| ispartof | Journal of Geophysical Research, 2001-02, Vol.106 (A2), p.1785-1794 |
| issn | 0148-0227 2156-2202 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_26768444 |
| source | Wiley Free Content; Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Alma/SFX Local Collection |
| subjects | Airglow. Aurora Earth, ocean, space Exact sciences and technology External geophysics Physics of the high neutral atmosphere |
| title | Ohmic heating as evidence for strong field-aligned currents in filamentary aurora |
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