A current disruption mechanism in the neutral sheet: A possible trigger for substorm expansions
A linear analysis is performed to investigate the kinetic cross-field streaming instability in the earth's magnetotail neutral sheet region. Numerical solution of the dispersion equation shows that the instability can occur under conditions expected for the neutral sheet just prior to the onset...
Gespeichert in:
| Veröffentlicht in: | Geophysical research letters 1990-05, Vol.17 (6), p.745-748 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 748 |
|---|---|
| container_issue | 6 |
| container_start_page | 745 |
| container_title | Geophysical research letters |
| container_volume | 17 |
| creator | Lui, A. T. Y. Mankofsky, A. Chang, C.-L. Papadopoulos, K. Wu, C. S. |
| description | A linear analysis is performed to investigate the kinetic cross-field streaming instability in the earth's magnetotail neutral sheet region. Numerical solution of the dispersion equation shows that the instability can occur under conditions expected for the neutral sheet just prior to the onset of substorm expansion. The excited waves are obliquely propagating whistlers with a mixed polarization in the lower hybrid frequency range. The ensuing turbulence of this instability can lead to a local reduction of the cross-tail current causing it to continue through the ionosphere to form a substorm current wedge. A substorm expansion onset scenario is proposed based on this instability in which the relative drift between ions and electrons is primarily due to unmagnetized ions undergoing current sheet acceleration in the presence of a cross-tail electric field. The required electric field strength is within the range of electric field values detected in the neutral sheet region during substorm intervals. The skew in local time of substorm onset location and the three conditions under which substorm onset is observed can be understood on the basis of the proposed scenario. |
| doi_str_mv | 10.1029/GL017i006p00745 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_6485683</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>18257417</sourcerecordid><originalsourceid>FETCH-LOGICAL-c5637-3087d398d85f3de8d31168f28c26ce2a92cd2d45d35ee2114cf4b8a8197491db3</originalsourceid><addsrcrecordid>eNqFks-L1DAUx4soOK6evXgIguKlbn42ibdx0SoMq4iieAmZNN2JdtJuXoq7_70pXRQ8uKckfD_vw0tequoxwS8Jpvq03WEiA8bNhLHk4k61IZrzWpXT3WqDsS57Kpv71QOAHxhjhhnZVGaL3JySjxl1AdI85TBGdPTuYGOAIwoR5YNH0c852QHBwfv8Cm3RNAKE_eBRTuHiwifUjwnBvIc8piPyV5ONUEzwsLrX2wH8o5v1pPry9s3ns3f17kP7_my7q51omKwZVrJjWnVK9KzzqmOENKqnytHGeWo1dR3tuOiY8J4Swl3P98oqoiXXpNuzk-rp6h0hBwMu5HIFN8boXTYNV6JRrEDPV2hK4-XsIZtjAOeHwUY_zmCoaAhlCt8KEkWF5EQW8MX_QUG1ZpSzxXm6oi6Vt0u-N1MKR5uuDcFmmaD5Z4Kl4tmN3IKzQ59sdAH-lmkqsJALx1fuVxj89W1a037acSmX3p-sZdGCNTGn0q7W5WcsqS5xvcYBsr_6Y7Xpp2kkk8J8PW8N-fi9fS3wN3POfgPJt8He</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1529932430</pqid></control><display><type>article</type><title>A current disruption mechanism in the neutral sheet: A possible trigger for substorm expansions</title><source>Wiley Online Library Journals Frontfile Complete</source><source>NASA Technical Reports Server</source><creator>Lui, A. T. Y. ; Mankofsky, A. ; Chang, C.-L. ; Papadopoulos, K. ; Wu, C. S.</creator><creatorcontrib>Lui, A. T. Y. ; Mankofsky, A. ; Chang, C.-L. ; Papadopoulos, K. ; Wu, C. S.</creatorcontrib><description>A linear analysis is performed to investigate the kinetic cross-field streaming instability in the earth's magnetotail neutral sheet region. Numerical solution of the dispersion equation shows that the instability can occur under conditions expected for the neutral sheet just prior to the onset of substorm expansion. The excited waves are obliquely propagating whistlers with a mixed polarization in the lower hybrid frequency range. The ensuing turbulence of this instability can lead to a local reduction of the cross-tail current causing it to continue through the ionosphere to form a substorm current wedge. A substorm expansion onset scenario is proposed based on this instability in which the relative drift between ions and electrons is primarily due to unmagnetized ions undergoing current sheet acceleration in the presence of a cross-tail electric field. The required electric field strength is within the range of electric field values detected in the neutral sheet region during substorm intervals. The skew in local time of substorm onset location and the three conditions under which substorm onset is observed can be understood on the basis of the proposed scenario.</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/GL017i006p00745</identifier><identifier>CODEN: GPRLAJ</identifier><language>eng</language><publisher>Legacy CDMS: Blackwell Publishing Ltd</publisher><subject>640201 - Atmospheric Physics- Auroral, Ionospheric, & Magetospheric Phenomena ; ACCELERATION ; CHARGED PARTICLES ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; Current sheets ; EARTH ATMOSPHERE ; EARTH MAGNETOSPHERE ; Earth, ocean, space ; ELECTRIC FIELDS ; ELECTROMAGNETIC RADIATION ; Exact sciences and technology ; EXPANSION ; External geophysics ; Geophysics ; INSTABILITY ; IONOSPHERE ; IONS ; MAGNETIC BAYS ; MAGNETIC FIELDS ; Magnetic storms, substorms ; MAGNETOTAIL ; Mathematical analysis ; Neutral sheets ; NOISE ; NUMERICAL SOLUTION ; Physics of the magnetosphere ; PLANETARY IONOSPHERES ; PLASMA DRIFT ; PLASMA INSTABILITY ; PLASMA SHEET ; RADIATIONS ; RADIO NOISE ; RADIOWAVE RADIATION ; Stability ; Wave propagation ; WHISTLERS</subject><ispartof>Geophysical research letters, 1990-05, Vol.17 (6), p.745-748</ispartof><rights>Copyright 1990 by the American Geophysical Union.</rights><rights>1991 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5637-3087d398d85f3de8d31168f28c26ce2a92cd2d45d35ee2114cf4b8a8197491db3</citedby><cites>FETCH-LOGICAL-c5637-3087d398d85f3de8d31168f28c26ce2a92cd2d45d35ee2114cf4b8a8197491db3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2FGL017i006p00745$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2FGL017i006p00745$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,776,780,881,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19250575$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/6485683$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Lui, A. T. Y.</creatorcontrib><creatorcontrib>Mankofsky, A.</creatorcontrib><creatorcontrib>Chang, C.-L.</creatorcontrib><creatorcontrib>Papadopoulos, K.</creatorcontrib><creatorcontrib>Wu, C. S.</creatorcontrib><title>A current disruption mechanism in the neutral sheet: A possible trigger for substorm expansions</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>A linear analysis is performed to investigate the kinetic cross-field streaming instability in the earth's magnetotail neutral sheet region. Numerical solution of the dispersion equation shows that the instability can occur under conditions expected for the neutral sheet just prior to the onset of substorm expansion. The excited waves are obliquely propagating whistlers with a mixed polarization in the lower hybrid frequency range. The ensuing turbulence of this instability can lead to a local reduction of the cross-tail current causing it to continue through the ionosphere to form a substorm current wedge. A substorm expansion onset scenario is proposed based on this instability in which the relative drift between ions and electrons is primarily due to unmagnetized ions undergoing current sheet acceleration in the presence of a cross-tail electric field. The required electric field strength is within the range of electric field values detected in the neutral sheet region during substorm intervals. The skew in local time of substorm onset location and the three conditions under which substorm onset is observed can be understood on the basis of the proposed scenario.</description><subject>640201 - Atmospheric Physics- Auroral, Ionospheric, & Magetospheric Phenomena</subject><subject>ACCELERATION</subject><subject>CHARGED PARTICLES</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>Current sheets</subject><subject>EARTH ATMOSPHERE</subject><subject>EARTH MAGNETOSPHERE</subject><subject>Earth, ocean, space</subject><subject>ELECTRIC FIELDS</subject><subject>ELECTROMAGNETIC RADIATION</subject><subject>Exact sciences and technology</subject><subject>EXPANSION</subject><subject>External geophysics</subject><subject>Geophysics</subject><subject>INSTABILITY</subject><subject>IONOSPHERE</subject><subject>IONS</subject><subject>MAGNETIC BAYS</subject><subject>MAGNETIC FIELDS</subject><subject>Magnetic storms, substorms</subject><subject>MAGNETOTAIL</subject><subject>Mathematical analysis</subject><subject>Neutral sheets</subject><subject>NOISE</subject><subject>NUMERICAL SOLUTION</subject><subject>Physics of the magnetosphere</subject><subject>PLANETARY IONOSPHERES</subject><subject>PLASMA DRIFT</subject><subject>PLASMA INSTABILITY</subject><subject>PLASMA SHEET</subject><subject>RADIATIONS</subject><subject>RADIO NOISE</subject><subject>RADIOWAVE RADIATION</subject><subject>Stability</subject><subject>Wave propagation</subject><subject>WHISTLERS</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><sourceid>CYI</sourceid><recordid>eNqFks-L1DAUx4soOK6evXgIguKlbn42ibdx0SoMq4iieAmZNN2JdtJuXoq7_70pXRQ8uKckfD_vw0tequoxwS8Jpvq03WEiA8bNhLHk4k61IZrzWpXT3WqDsS57Kpv71QOAHxhjhhnZVGaL3JySjxl1AdI85TBGdPTuYGOAIwoR5YNH0c852QHBwfv8Cm3RNAKE_eBRTuHiwifUjwnBvIc8piPyV5ONUEzwsLrX2wH8o5v1pPry9s3ns3f17kP7_my7q51omKwZVrJjWnVK9KzzqmOENKqnytHGeWo1dR3tuOiY8J4Swl3P98oqoiXXpNuzk-rp6h0hBwMu5HIFN8boXTYNV6JRrEDPV2hK4-XsIZtjAOeHwUY_zmCoaAhlCt8KEkWF5EQW8MX_QUG1ZpSzxXm6oi6Vt0u-N1MKR5uuDcFmmaD5Z4Kl4tmN3IKzQ59sdAH-lmkqsJALx1fuVxj89W1a037acSmX3p-sZdGCNTGn0q7W5WcsqS5xvcYBsr_6Y7Xpp2kkk8J8PW8N-fi9fS3wN3POfgPJt8He</recordid><startdate>199005</startdate><enddate>199005</enddate><creator>Lui, A. T. Y.</creator><creator>Mankofsky, A.</creator><creator>Chang, C.-L.</creator><creator>Papadopoulos, K.</creator><creator>Wu, C. S.</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><scope>BSCLL</scope><scope>CYE</scope><scope>CYI</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope><scope>7TG</scope><scope>KL.</scope><scope>OTOTI</scope></search><sort><creationdate>199005</creationdate><title>A current disruption mechanism in the neutral sheet: A possible trigger for substorm expansions</title><author>Lui, A. T. Y. ; Mankofsky, A. ; Chang, C.-L. ; Papadopoulos, K. ; Wu, C. S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5637-3087d398d85f3de8d31168f28c26ce2a92cd2d45d35ee2114cf4b8a8197491db3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>640201 - Atmospheric Physics- Auroral, Ionospheric, & Magetospheric Phenomena</topic><topic>ACCELERATION</topic><topic>CHARGED PARTICLES</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>Current sheets</topic><topic>EARTH ATMOSPHERE</topic><topic>EARTH MAGNETOSPHERE</topic><topic>Earth, ocean, space</topic><topic>ELECTRIC FIELDS</topic><topic>ELECTROMAGNETIC RADIATION</topic><topic>Exact sciences and technology</topic><topic>EXPANSION</topic><topic>External geophysics</topic><topic>Geophysics</topic><topic>INSTABILITY</topic><topic>IONOSPHERE</topic><topic>IONS</topic><topic>MAGNETIC BAYS</topic><topic>MAGNETIC FIELDS</topic><topic>Magnetic storms, substorms</topic><topic>MAGNETOTAIL</topic><topic>Mathematical analysis</topic><topic>Neutral sheets</topic><topic>NOISE</topic><topic>NUMERICAL SOLUTION</topic><topic>Physics of the magnetosphere</topic><topic>PLANETARY IONOSPHERES</topic><topic>PLASMA DRIFT</topic><topic>PLASMA INSTABILITY</topic><topic>PLASMA SHEET</topic><topic>RADIATIONS</topic><topic>RADIO NOISE</topic><topic>RADIOWAVE RADIATION</topic><topic>Stability</topic><topic>Wave propagation</topic><topic>WHISTLERS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lui, A. T. Y.</creatorcontrib><creatorcontrib>Mankofsky, A.</creatorcontrib><creatorcontrib>Chang, C.-L.</creatorcontrib><creatorcontrib>Papadopoulos, K.</creatorcontrib><creatorcontrib>Wu, C. S.</creatorcontrib><collection>Istex</collection><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection><collection>Pascal-Francis</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><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>OSTI.GOV</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lui, A. T. Y.</au><au>Mankofsky, A.</au><au>Chang, C.-L.</au><au>Papadopoulos, K.</au><au>Wu, C. S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A current disruption mechanism in the neutral sheet: A possible trigger for substorm expansions</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>1990-05</date><risdate>1990</risdate><volume>17</volume><issue>6</issue><spage>745</spage><epage>748</epage><pages>745-748</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><coden>GPRLAJ</coden><abstract>A linear analysis is performed to investigate the kinetic cross-field streaming instability in the earth's magnetotail neutral sheet region. Numerical solution of the dispersion equation shows that the instability can occur under conditions expected for the neutral sheet just prior to the onset of substorm expansion. The excited waves are obliquely propagating whistlers with a mixed polarization in the lower hybrid frequency range. The ensuing turbulence of this instability can lead to a local reduction of the cross-tail current causing it to continue through the ionosphere to form a substorm current wedge. A substorm expansion onset scenario is proposed based on this instability in which the relative drift between ions and electrons is primarily due to unmagnetized ions undergoing current sheet acceleration in the presence of a cross-tail electric field. The required electric field strength is within the range of electric field values detected in the neutral sheet region during substorm intervals. The skew in local time of substorm onset location and the three conditions under which substorm onset is observed can be understood on the basis of the proposed scenario.</abstract><cop>Legacy CDMS</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/GL017i006p00745</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-8276 |
| ispartof | Geophysical research letters, 1990-05, Vol.17 (6), p.745-748 |
| issn | 0094-8276 1944-8007 |
| language | eng |
| recordid | cdi_osti_scitechconnect_6485683 |
| source | Wiley Online Library Journals Frontfile Complete; NASA Technical Reports Server |
| subjects | 640201 - Atmospheric Physics- Auroral, Ionospheric, & Magetospheric Phenomena ACCELERATION CHARGED PARTICLES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Current sheets EARTH ATMOSPHERE EARTH MAGNETOSPHERE Earth, ocean, space ELECTRIC FIELDS ELECTROMAGNETIC RADIATION Exact sciences and technology EXPANSION External geophysics Geophysics INSTABILITY IONOSPHERE IONS MAGNETIC BAYS MAGNETIC FIELDS Magnetic storms, substorms MAGNETOTAIL Mathematical analysis Neutral sheets NOISE NUMERICAL SOLUTION Physics of the magnetosphere PLANETARY IONOSPHERES PLASMA DRIFT PLASMA INSTABILITY PLASMA SHEET RADIATIONS RADIO NOISE RADIOWAVE RADIATION Stability Wave propagation WHISTLERS |
| title | A current disruption mechanism in the neutral sheet: A possible trigger for substorm expansions |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-02T05%3A37%3A45IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=A%20current%20disruption%20mechanism%20in%20the%20neutral%20sheet:%20A%20possible%20trigger%20for%20substorm%20expansions&rft.jtitle=Geophysical%20research%20letters&rft.au=Lui,%20A.%20T.%20Y.&rft.date=1990-05&rft.volume=17&rft.issue=6&rft.spage=745&rft.epage=748&rft.pages=745-748&rft.issn=0094-8276&rft.eissn=1944-8007&rft.coden=GPRLAJ&rft_id=info:doi/10.1029/GL017i006p00745&rft_dat=%3Cproquest_osti_%3E18257417%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1529932430&rft_id=info:pmid/&rfr_iscdi=true |