Ion-scale spectral break of solar wind turbulence at high and low beta
The power spectrum of magnetic fluctuations in the solar wind at 1 AU displays a break between two power laws in the range of spacecraft‐frame frequencies 0.1 to 1 Hz. These frequencies correspond to spatial scales in the plasma frame near the proton gyroradius ρi and proton inertial length di. At 1...
Gespeichert in:
| Veröffentlicht in: | Geophysical research letters 2014-11, Vol.41 (22), p.8081-8088 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 8088 |
|---|---|
| container_issue | 22 |
| container_start_page | 8081 |
| container_title | Geophysical research letters |
| container_volume | 41 |
| creator | Chen, C. H. K. Leung, L. Boldyrev, S. Maruca, B. A. Bale, S. D. |
| description | The power spectrum of magnetic fluctuations in the solar wind at 1 AU displays a break between two power laws in the range of spacecraft‐frame frequencies 0.1 to 1 Hz. These frequencies correspond to spatial scales in the plasma frame near the proton gyroradius ρi and proton inertial length di. At 1 AU it is difficult to determine which of these is associated with the break, since di=ρi/β⊥i and the perpendicular ion plasma beta is typically β⊥i∼1. To address this, several exceptional intervals with β⊥i≪1 and β⊥i≫1 were investigated, during which these scales were well separated. It was found that for β⊥i≪1 the break occurs at di and for β⊥i≫1 at ρi, i.e., the larger of the two scales. Possible explanations for these results are discussed, including Alfvén wave dispersion, damping, and current sheets.
Key PointsIon‐scale spectral break measured in solar wind with very high and low betaBreak occurs at the larger of the ion gyroradius and ion inertial lengthResults compared to various theoretical expectations |
| doi_str_mv | 10.1002/2014GL062009 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_4459186</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1826617498</sourcerecordid><originalsourceid>FETCH-LOGICAL-c6146-7fd7477d39cb0b058adbb64dacd09df722777647da42edaac642a5131b30b9c73</originalsourceid><addsrcrecordid>eNqNks1v1DAQxS0EokvhxhlFcOFAYPwdX5CgoqHqqkgIVG6W7TjdtNl4sROW_vd4lbIqHAonW-PfvBk_PYSeYniNAcgbApjVSxAEQN1DC6wYKysAeR8tciXfiRQH6FFKlwBAgeKH6IAIkEwwskDHJ2EokzO9L9LGuzGavrDRm6sitEUKvYnFthuaYpyinXo_OF-YsVh1F6vC5HIftoX1o3mMHrSmT_7JzXmIvh5_-HL0sVx-qk-O3i1LJzATpWwbyaRsqHIWLPDKNNYK1hjXgGpaSYiUUjDZGEZ8Y4zLOxqOKbYUrHKSHqK3s-5msmvfOD_sNtab2K1NvNbBdPrPl6Fb6YvwQzPGFa5EFng-C4Q0djq5bvRu5cIw5L9rTBnheAe9vJkSw_fJp1Gvu-R835vBhylpXBEhsGSq-jcqOBOCE6H-B8WMM0JwRl_8hV6GKQ7ZWY0VhkopzOBOKpsoecWBZurVTLkYUoq-3buFQe8SpG8nKOPPbju8h39HJgNkBrZd76_vFNP15yUnhOwcLeemLo3-577JxCstJJVcn5_V-gzI-_P626k-pb8AwKra5g</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1647758503</pqid></control><display><type>article</type><title>Ion-scale spectral break of solar wind turbulence at high and low beta</title><source>Wiley Free Content</source><source>Wiley-Blackwell AGU Digital Library</source><source>Wiley Online Library Journals Frontfile Complete</source><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><creator>Chen, C. H. K. ; Leung, L. ; Boldyrev, S. ; Maruca, B. A. ; Bale, S. D.</creator><creatorcontrib>Chen, C. H. K. ; Leung, L. ; Boldyrev, S. ; Maruca, B. A. ; Bale, S. D. ; Univ. of Wisconsin, Madison, WI (United States)</creatorcontrib><description>The power spectrum of magnetic fluctuations in the solar wind at 1 AU displays a break between two power laws in the range of spacecraft‐frame frequencies 0.1 to 1 Hz. These frequencies correspond to spatial scales in the plasma frame near the proton gyroradius ρi and proton inertial length di. At 1 AU it is difficult to determine which of these is associated with the break, since di=ρi/β⊥i and the perpendicular ion plasma beta is typically β⊥i∼1. To address this, several exceptional intervals with β⊥i≪1 and β⊥i≫1 were investigated, during which these scales were well separated. It was found that for β⊥i≪1 the break occurs at di and for β⊥i≫1 at ρi, i.e., the larger of the two scales. Possible explanations for these results are discussed, including Alfvén wave dispersion, damping, and current sheets.
Key PointsIon‐scale spectral break measured in solar wind with very high and low betaBreak occurs at the larger of the ion gyroradius and ion inertial lengthResults compared to various theoretical expectations</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1002/2014GL062009</identifier><identifier>PMID: 26074642</identifier><language>eng</language><publisher>United States: Blackwell Publishing Ltd</publisher><subject>Alfven waves ; ASTRONOMY AND ASTROPHYSICS ; Breaking ; Current sheets ; Damping ; Dispersion ; Dispersions ; Displays ; Geophysics ; GEOSCIENCES ; Inertial ; Intervals ; Length ; Magnetic fields ; plasma ; Research Letters ; Sheets ; Solar generators ; Solar physics ; Solar wind ; Solar wind turbulence ; Spacecraft ; Spacecraft power supplies ; Spectra ; Turbulence ; Turbulent flow ; Wave dispersion ; Wind power generation</subject><ispartof>Geophysical research letters, 2014-11, Vol.41 (22), p.8081-8088</ispartof><rights>2014. The Authors.</rights><rights>2014. American Geophysical Union. All Rights Reserved.</rights><rights>2014. The Authors. 2014</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c6146-7fd7477d39cb0b058adbb64dacd09df722777647da42edaac642a5131b30b9c73</citedby><cites>FETCH-LOGICAL-c6146-7fd7477d39cb0b058adbb64dacd09df722777647da42edaac642a5131b30b9c73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F2014GL062009$$EPDF$$P50$$Gwiley$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2014GL062009$$EHTML$$P50$$Gwiley$$Hfree_for_read</linktohtml><link.rule.ids>230,314,776,780,881,1411,1427,11495,27903,27904,45553,45554,46387,46446,46811,46870</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26074642$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/servlets/purl/1342516$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Chen, C. H. K.</creatorcontrib><creatorcontrib>Leung, L.</creatorcontrib><creatorcontrib>Boldyrev, S.</creatorcontrib><creatorcontrib>Maruca, B. A.</creatorcontrib><creatorcontrib>Bale, S. D.</creatorcontrib><creatorcontrib>Univ. of Wisconsin, Madison, WI (United States)</creatorcontrib><title>Ion-scale spectral break of solar wind turbulence at high and low beta</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>The power spectrum of magnetic fluctuations in the solar wind at 1 AU displays a break between two power laws in the range of spacecraft‐frame frequencies 0.1 to 1 Hz. These frequencies correspond to spatial scales in the plasma frame near the proton gyroradius ρi and proton inertial length di. At 1 AU it is difficult to determine which of these is associated with the break, since di=ρi/β⊥i and the perpendicular ion plasma beta is typically β⊥i∼1. To address this, several exceptional intervals with β⊥i≪1 and β⊥i≫1 were investigated, during which these scales were well separated. It was found that for β⊥i≪1 the break occurs at di and for β⊥i≫1 at ρi, i.e., the larger of the two scales. Possible explanations for these results are discussed, including Alfvén wave dispersion, damping, and current sheets.
Key PointsIon‐scale spectral break measured in solar wind with very high and low betaBreak occurs at the larger of the ion gyroradius and ion inertial lengthResults compared to various theoretical expectations</description><subject>Alfven waves</subject><subject>ASTRONOMY AND ASTROPHYSICS</subject><subject>Breaking</subject><subject>Current sheets</subject><subject>Damping</subject><subject>Dispersion</subject><subject>Dispersions</subject><subject>Displays</subject><subject>Geophysics</subject><subject>GEOSCIENCES</subject><subject>Inertial</subject><subject>Intervals</subject><subject>Length</subject><subject>Magnetic fields</subject><subject>plasma</subject><subject>Research Letters</subject><subject>Sheets</subject><subject>Solar generators</subject><subject>Solar physics</subject><subject>Solar wind</subject><subject>Solar wind turbulence</subject><subject>Spacecraft</subject><subject>Spacecraft power supplies</subject><subject>Spectra</subject><subject>Turbulence</subject><subject>Turbulent flow</subject><subject>Wave dispersion</subject><subject>Wind power generation</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><recordid>eNqNks1v1DAQxS0EokvhxhlFcOFAYPwdX5CgoqHqqkgIVG6W7TjdtNl4sROW_vd4lbIqHAonW-PfvBk_PYSeYniNAcgbApjVSxAEQN1DC6wYKysAeR8tciXfiRQH6FFKlwBAgeKH6IAIkEwwskDHJ2EokzO9L9LGuzGavrDRm6sitEUKvYnFthuaYpyinXo_OF-YsVh1F6vC5HIftoX1o3mMHrSmT_7JzXmIvh5_-HL0sVx-qk-O3i1LJzATpWwbyaRsqHIWLPDKNNYK1hjXgGpaSYiUUjDZGEZ8Y4zLOxqOKbYUrHKSHqK3s-5msmvfOD_sNtab2K1NvNbBdPrPl6Fb6YvwQzPGFa5EFng-C4Q0djq5bvRu5cIw5L9rTBnheAe9vJkSw_fJp1Gvu-R835vBhylpXBEhsGSq-jcqOBOCE6H-B8WMM0JwRl_8hV6GKQ7ZWY0VhkopzOBOKpsoecWBZurVTLkYUoq-3buFQe8SpG8nKOPPbju8h39HJgNkBrZd76_vFNP15yUnhOwcLeemLo3-577JxCstJJVcn5_V-gzI-_P626k-pb8AwKra5g</recordid><startdate>20141128</startdate><enddate>20141128</enddate><creator>Chen, C. H. K.</creator><creator>Leung, L.</creator><creator>Boldyrev, S.</creator><creator>Maruca, B. A.</creator><creator>Bale, S. D.</creator><general>Blackwell Publishing Ltd</general><general>John Wiley & Sons, Inc</general><general>American Geophysical Union</general><general>BlackWell Publishing Ltd</general><scope>BSCLL</scope><scope>24P</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>7UA</scope><scope>C1K</scope><scope>7X8</scope><scope>OIOZB</scope><scope>OTOTI</scope><scope>5PM</scope></search><sort><creationdate>20141128</creationdate><title>Ion-scale spectral break of solar wind turbulence at high and low beta</title><author>Chen, C. H. K. ; Leung, L. ; Boldyrev, S. ; Maruca, B. A. ; Bale, S. D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c6146-7fd7477d39cb0b058adbb64dacd09df722777647da42edaac642a5131b30b9c73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Alfven waves</topic><topic>ASTRONOMY AND ASTROPHYSICS</topic><topic>Breaking</topic><topic>Current sheets</topic><topic>Damping</topic><topic>Dispersion</topic><topic>Dispersions</topic><topic>Displays</topic><topic>Geophysics</topic><topic>GEOSCIENCES</topic><topic>Inertial</topic><topic>Intervals</topic><topic>Length</topic><topic>Magnetic fields</topic><topic>plasma</topic><topic>Research Letters</topic><topic>Sheets</topic><topic>Solar generators</topic><topic>Solar physics</topic><topic>Solar wind</topic><topic>Solar wind turbulence</topic><topic>Spacecraft</topic><topic>Spacecraft power supplies</topic><topic>Spectra</topic><topic>Turbulence</topic><topic>Turbulent flow</topic><topic>Wave dispersion</topic><topic>Wind power generation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, C. H. K.</creatorcontrib><creatorcontrib>Leung, L.</creatorcontrib><creatorcontrib>Boldyrev, S.</creatorcontrib><creatorcontrib>Maruca, B. A.</creatorcontrib><creatorcontrib>Bale, S. D.</creatorcontrib><creatorcontrib>Univ. of Wisconsin, Madison, WI (United States)</creatorcontrib><collection>Istex</collection><collection>Wiley Online Library Open Access</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, C. H. K.</au><au>Leung, L.</au><au>Boldyrev, S.</au><au>Maruca, B. A.</au><au>Bale, S. D.</au><aucorp>Univ. of Wisconsin, Madison, WI (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ion-scale spectral break of solar wind turbulence at high and low beta</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2014-11-28</date><risdate>2014</risdate><volume>41</volume><issue>22</issue><spage>8081</spage><epage>8088</epage><pages>8081-8088</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>The power spectrum of magnetic fluctuations in the solar wind at 1 AU displays a break between two power laws in the range of spacecraft‐frame frequencies 0.1 to 1 Hz. These frequencies correspond to spatial scales in the plasma frame near the proton gyroradius ρi and proton inertial length di. At 1 AU it is difficult to determine which of these is associated with the break, since di=ρi/β⊥i and the perpendicular ion plasma beta is typically β⊥i∼1. To address this, several exceptional intervals with β⊥i≪1 and β⊥i≫1 were investigated, during which these scales were well separated. It was found that for β⊥i≪1 the break occurs at di and for β⊥i≫1 at ρi, i.e., the larger of the two scales. Possible explanations for these results are discussed, including Alfvén wave dispersion, damping, and current sheets.
Key PointsIon‐scale spectral break measured in solar wind with very high and low betaBreak occurs at the larger of the ion gyroradius and ion inertial lengthResults compared to various theoretical expectations</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>26074642</pmid><doi>10.1002/2014GL062009</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-8276 |
| ispartof | Geophysical research letters, 2014-11, Vol.41 (22), p.8081-8088 |
| issn | 0094-8276 1944-8007 |
| language | eng |
| recordid | cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_4459186 |
| source | Wiley Free Content; Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Alfven waves ASTRONOMY AND ASTROPHYSICS Breaking Current sheets Damping Dispersion Dispersions Displays Geophysics GEOSCIENCES Inertial Intervals Length Magnetic fields plasma Research Letters Sheets Solar generators Solar physics Solar wind Solar wind turbulence Spacecraft Spacecraft power supplies Spectra Turbulence Turbulent flow Wave dispersion Wind power generation |
| title | Ion-scale spectral break of solar wind turbulence at high and low beta |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-27T12%3A53%3A45IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pubme&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Ion-scale%20spectral%20break%20of%20solar%20wind%20turbulence%20at%20high%20and%20low%20beta&rft.jtitle=Geophysical%20research%20letters&rft.au=Chen,%20C.%20H.%20K.&rft.aucorp=Univ.%20of%20Wisconsin,%20Madison,%20WI%20(United%20States)&rft.date=2014-11-28&rft.volume=41&rft.issue=22&rft.spage=8081&rft.epage=8088&rft.pages=8081-8088&rft.issn=0094-8276&rft.eissn=1944-8007&rft_id=info:doi/10.1002/2014GL062009&rft_dat=%3Cproquest_pubme%3E1826617498%3C/proquest_pubme%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1647758503&rft_id=info:pmid/26074642&rfr_iscdi=true |