Fast modulations of pulsating proton aurora related to subpacket structures of Pc1 geomagnetic pulsations at subauroral latitudes
To understand the role of electromagnetic ion cyclotron (EMIC) waves in determining the temporal features of pulsating proton aurora (PPA) via wave‐particle interactions at subauroral latitudes, high‐time‐resolution (1/8 s) images of proton‐induced N2+ emissions were recorded using a new electron mu...
Gespeichert in:
| Veröffentlicht in: | Geophysical research letters 2016-08, Vol.43 (15), p.7859-7866 |
|---|---|
| Hauptverfasser: | , , , , , , , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 7866 |
|---|---|
| container_issue | 15 |
| container_start_page | 7859 |
| container_title | Geophysical research letters |
| container_volume | 43 |
| creator | Ozaki, M. Shiokawa, K. Miyoshi, Y. Kataoka, R. Yagitani, S. Inoue, T. Ebihara, Y. Jun, C.‐W Nomura, R. Sakaguchi, K. Otsuka, Y. Shoji, M. Schofield, I. Connors, M. Jordanova, V. K. |
| description | To understand the role of electromagnetic ion cyclotron (EMIC) waves in determining the temporal features of pulsating proton aurora (PPA) via wave‐particle interactions at subauroral latitudes, high‐time‐resolution (1/8 s) images of proton‐induced N2+ emissions were recorded using a new electron multiplying charge‐coupled device camera, along with related Pc1 pulsations on the ground. The observed Pc1 pulsations consisted of successive rising‐tone elements with a spacing for each element of 100 s and subpacket structures, which manifest as amplitude modulations with a period of a few tens of seconds. In accordance with the temporal features of the Pc1 pulsations, the auroral intensity showed a similar repetition period of 100 s and an unpredicted fast modulation of a few tens of seconds. These results indicate that PPA is generated by pitch angle scattering, nonlinearly interacting with Pc1/EMIC waves at the magnetic equator.
Key Points
Fast (a few tens of seconds) modulation of pulsating proton aurora was observed
Fast modulations of pulsating proton aurora were related with subpacket structures of Pc1 pulsations
The modulation frequency showed a correlation with Pc1 intensity based on a nonlinear theory |
| doi_str_mv | 10.1002/2016GL070008 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_1304820</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1819140094</sourcerecordid><originalsourceid>FETCH-LOGICAL-c5758-25169043ec8156da2dcbcba320c3a109642dec29d6208c902b62bf39c0e86b4a3</originalsourceid><addsrcrecordid>eNqN0k2LFDEQBuAgCo6rN39A0IsHR6vy1clRlt1RGFBEzyGdzoy99nTGfCB79J-bthXEw-IpCTz1hiqKkKcIrxCAvWaAareHDgD0PbJBI8RWA3T3yQbAtDvr1EPyKOebJjhw3JAf1y4XeopDnVwZ45xpPNBznXJ7zUd6TrHEmbqaYnI0hYbCQEukufZn57-GQnNJ1Zeawq_SDx7pMcSTO86hjP5P1BLsylK1Rk10-a7UIeTH5MHBTTk8-X1ekM_XV58u327373fvLt_st152Um-ZRGVA8OA1SjU4Nvje944z8NwhGCXYEDwzg2KgvQHWK9YfuPEQtOqF4xfk2Zobcxlt9mMJ_ouP8xx8schBaAYNvVhRa_xbDbnY05h9mCY3h1izRc2lVCCY-g-KBsUy90af_0NvYk1z69aiAWOEkiDvVBoFckTQTb1clU8x5xQO9pzGk0u3FsEuW2D_3oLG2cq_j1O4vdPa3ce9FJ3R_Cfy97Kg</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1814131108</pqid></control><display><type>article</type><title>Fast modulations of pulsating proton aurora related to subpacket structures of Pc1 geomagnetic pulsations at subauroral latitudes</title><source>Wiley Online Library Journals Frontfile Complete</source><source>Wiley Online Library Free Content</source><source>Wiley Online Library AGU Free Content</source><source>EZB-FREE-00999 freely available EZB journals</source><creator>Ozaki, M. ; Shiokawa, K. ; Miyoshi, Y. ; Kataoka, R. ; Yagitani, S. ; Inoue, T. ; Ebihara, Y. ; Jun, C.‐W ; Nomura, R. ; Sakaguchi, K. ; Otsuka, Y. ; Shoji, M. ; Schofield, I. ; Connors, M. ; Jordanova, V. K.</creator><creatorcontrib>Ozaki, M. ; Shiokawa, K. ; Miyoshi, Y. ; Kataoka, R. ; Yagitani, S. ; Inoue, T. ; Ebihara, Y. ; Jun, C.‐W ; Nomura, R. ; Sakaguchi, K. ; Otsuka, Y. ; Shoji, M. ; Schofield, I. ; Connors, M. ; Jordanova, V. K. ; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)</creatorcontrib><description>To understand the role of electromagnetic ion cyclotron (EMIC) waves in determining the temporal features of pulsating proton aurora (PPA) via wave‐particle interactions at subauroral latitudes, high‐time‐resolution (1/8 s) images of proton‐induced N2+ emissions were recorded using a new electron multiplying charge‐coupled device camera, along with related Pc1 pulsations on the ground. The observed Pc1 pulsations consisted of successive rising‐tone elements with a spacing for each element of 100 s and subpacket structures, which manifest as amplitude modulations with a period of a few tens of seconds. In accordance with the temporal features of the Pc1 pulsations, the auroral intensity showed a similar repetition period of 100 s and an unpredicted fast modulation of a few tens of seconds. These results indicate that PPA is generated by pitch angle scattering, nonlinearly interacting with Pc1/EMIC waves at the magnetic equator.
Key Points
Fast (a few tens of seconds) modulation of pulsating proton aurora was observed
Fast modulations of pulsating proton aurora were related with subpacket structures of Pc1 pulsations
The modulation frequency showed a correlation with Pc1 intensity based on a nonlinear theory</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1002/2016GL070008</identifier><language>eng</language><publisher>Washington: John Wiley & Sons, Inc</publisher><subject>Amplitude ; Amplitude modulation ; Auroral protons ; Auroras ; Charge coupled devices ; Charged particles ; Cyclotrons ; Equator ; fast modulation ; Geomagnetic pulsations ; Geomagnetism ; GEOSCIENCES ; Heliospheric and Magnetospheric Physics ; Interactions ; Ion cyclotron waves ; Latitude ; Magnetic equator ; Magnetic fields ; Modulation ; Pc1 geomagnetic pulsations ; Pitch (inclination) ; Pitch angle ; pulsating proton aurora ; Pulsation ; Repetition ; Resolution ; Scattering ; Structures ; subpacket structure ; Temporal variations ; Wave-particle interactions</subject><ispartof>Geophysical research letters, 2016-08, Vol.43 (15), p.7859-7866</ispartof><rights>2016. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5758-25169043ec8156da2dcbcba320c3a109642dec29d6208c902b62bf39c0e86b4a3</citedby><cites>FETCH-LOGICAL-c5758-25169043ec8156da2dcbcba320c3a109642dec29d6208c902b62bf39c0e86b4a3</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%2F2016GL070008$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2016GL070008$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>230,314,776,780,881,1411,1427,11493,27901,27902,45550,45551,46384,46443,46808,46867</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1304820$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Ozaki, M.</creatorcontrib><creatorcontrib>Shiokawa, K.</creatorcontrib><creatorcontrib>Miyoshi, Y.</creatorcontrib><creatorcontrib>Kataoka, R.</creatorcontrib><creatorcontrib>Yagitani, S.</creatorcontrib><creatorcontrib>Inoue, T.</creatorcontrib><creatorcontrib>Ebihara, Y.</creatorcontrib><creatorcontrib>Jun, C.‐W</creatorcontrib><creatorcontrib>Nomura, R.</creatorcontrib><creatorcontrib>Sakaguchi, K.</creatorcontrib><creatorcontrib>Otsuka, Y.</creatorcontrib><creatorcontrib>Shoji, M.</creatorcontrib><creatorcontrib>Schofield, I.</creatorcontrib><creatorcontrib>Connors, M.</creatorcontrib><creatorcontrib>Jordanova, V. K.</creatorcontrib><creatorcontrib>Los Alamos National Lab. (LANL), Los Alamos, NM (United States)</creatorcontrib><title>Fast modulations of pulsating proton aurora related to subpacket structures of Pc1 geomagnetic pulsations at subauroral latitudes</title><title>Geophysical research letters</title><description>To understand the role of electromagnetic ion cyclotron (EMIC) waves in determining the temporal features of pulsating proton aurora (PPA) via wave‐particle interactions at subauroral latitudes, high‐time‐resolution (1/8 s) images of proton‐induced N2+ emissions were recorded using a new electron multiplying charge‐coupled device camera, along with related Pc1 pulsations on the ground. The observed Pc1 pulsations consisted of successive rising‐tone elements with a spacing for each element of 100 s and subpacket structures, which manifest as amplitude modulations with a period of a few tens of seconds. In accordance with the temporal features of the Pc1 pulsations, the auroral intensity showed a similar repetition period of 100 s and an unpredicted fast modulation of a few tens of seconds. These results indicate that PPA is generated by pitch angle scattering, nonlinearly interacting with Pc1/EMIC waves at the magnetic equator.
Key Points
Fast (a few tens of seconds) modulation of pulsating proton aurora was observed
Fast modulations of pulsating proton aurora were related with subpacket structures of Pc1 pulsations
The modulation frequency showed a correlation with Pc1 intensity based on a nonlinear theory</description><subject>Amplitude</subject><subject>Amplitude modulation</subject><subject>Auroral protons</subject><subject>Auroras</subject><subject>Charge coupled devices</subject><subject>Charged particles</subject><subject>Cyclotrons</subject><subject>Equator</subject><subject>fast modulation</subject><subject>Geomagnetic pulsations</subject><subject>Geomagnetism</subject><subject>GEOSCIENCES</subject><subject>Heliospheric and Magnetospheric Physics</subject><subject>Interactions</subject><subject>Ion cyclotron waves</subject><subject>Latitude</subject><subject>Magnetic equator</subject><subject>Magnetic fields</subject><subject>Modulation</subject><subject>Pc1 geomagnetic pulsations</subject><subject>Pitch (inclination)</subject><subject>Pitch angle</subject><subject>pulsating proton aurora</subject><subject>Pulsation</subject><subject>Repetition</subject><subject>Resolution</subject><subject>Scattering</subject><subject>Structures</subject><subject>subpacket structure</subject><subject>Temporal variations</subject><subject>Wave-particle interactions</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqN0k2LFDEQBuAgCo6rN39A0IsHR6vy1clRlt1RGFBEzyGdzoy99nTGfCB79J-bthXEw-IpCTz1hiqKkKcIrxCAvWaAareHDgD0PbJBI8RWA3T3yQbAtDvr1EPyKOebJjhw3JAf1y4XeopDnVwZ45xpPNBznXJ7zUd6TrHEmbqaYnI0hYbCQEukufZn57-GQnNJ1Zeawq_SDx7pMcSTO86hjP5P1BLsylK1Rk10-a7UIeTH5MHBTTk8-X1ekM_XV58u327373fvLt_st152Um-ZRGVA8OA1SjU4Nvje944z8NwhGCXYEDwzg2KgvQHWK9YfuPEQtOqF4xfk2Zobcxlt9mMJ_ouP8xx8schBaAYNvVhRa_xbDbnY05h9mCY3h1izRc2lVCCY-g-KBsUy90af_0NvYk1z69aiAWOEkiDvVBoFckTQTb1clU8x5xQO9pzGk0u3FsEuW2D_3oLG2cq_j1O4vdPa3ce9FJ3R_Cfy97Kg</recordid><startdate>20160816</startdate><enddate>20160816</enddate><creator>Ozaki, M.</creator><creator>Shiokawa, K.</creator><creator>Miyoshi, Y.</creator><creator>Kataoka, R.</creator><creator>Yagitani, S.</creator><creator>Inoue, T.</creator><creator>Ebihara, Y.</creator><creator>Jun, C.‐W</creator><creator>Nomura, R.</creator><creator>Sakaguchi, K.</creator><creator>Otsuka, Y.</creator><creator>Shoji, M.</creator><creator>Schofield, I.</creator><creator>Connors, M.</creator><creator>Jordanova, V. K.</creator><general>John Wiley & Sons, Inc</general><general>American Geophysical Union</general><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>OIOZB</scope><scope>OTOTI</scope></search><sort><creationdate>20160816</creationdate><title>Fast modulations of pulsating proton aurora related to subpacket structures of Pc1 geomagnetic pulsations at subauroral latitudes</title><author>Ozaki, M. ; Shiokawa, K. ; Miyoshi, Y. ; Kataoka, R. ; Yagitani, S. ; Inoue, T. ; Ebihara, Y. ; Jun, C.‐W ; Nomura, R. ; Sakaguchi, K. ; Otsuka, Y. ; Shoji, M. ; Schofield, I. ; Connors, M. ; Jordanova, V. K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5758-25169043ec8156da2dcbcba320c3a109642dec29d6208c902b62bf39c0e86b4a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Amplitude</topic><topic>Amplitude modulation</topic><topic>Auroral protons</topic><topic>Auroras</topic><topic>Charge coupled devices</topic><topic>Charged particles</topic><topic>Cyclotrons</topic><topic>Equator</topic><topic>fast modulation</topic><topic>Geomagnetic pulsations</topic><topic>Geomagnetism</topic><topic>GEOSCIENCES</topic><topic>Heliospheric and Magnetospheric Physics</topic><topic>Interactions</topic><topic>Ion cyclotron waves</topic><topic>Latitude</topic><topic>Magnetic equator</topic><topic>Magnetic fields</topic><topic>Modulation</topic><topic>Pc1 geomagnetic pulsations</topic><topic>Pitch (inclination)</topic><topic>Pitch angle</topic><topic>pulsating proton aurora</topic><topic>Pulsation</topic><topic>Repetition</topic><topic>Resolution</topic><topic>Scattering</topic><topic>Structures</topic><topic>subpacket structure</topic><topic>Temporal variations</topic><topic>Wave-particle interactions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ozaki, M.</creatorcontrib><creatorcontrib>Shiokawa, K.</creatorcontrib><creatorcontrib>Miyoshi, Y.</creatorcontrib><creatorcontrib>Kataoka, R.</creatorcontrib><creatorcontrib>Yagitani, S.</creatorcontrib><creatorcontrib>Inoue, T.</creatorcontrib><creatorcontrib>Ebihara, Y.</creatorcontrib><creatorcontrib>Jun, C.‐W</creatorcontrib><creatorcontrib>Nomura, R.</creatorcontrib><creatorcontrib>Sakaguchi, K.</creatorcontrib><creatorcontrib>Otsuka, Y.</creatorcontrib><creatorcontrib>Shoji, M.</creatorcontrib><creatorcontrib>Schofield, I.</creatorcontrib><creatorcontrib>Connors, M.</creatorcontrib><creatorcontrib>Jordanova, V. K.</creatorcontrib><creatorcontrib>Los Alamos National Lab. (LANL), Los Alamos, NM (United States)</creatorcontrib><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>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ozaki, M.</au><au>Shiokawa, K.</au><au>Miyoshi, Y.</au><au>Kataoka, R.</au><au>Yagitani, S.</au><au>Inoue, T.</au><au>Ebihara, Y.</au><au>Jun, C.‐W</au><au>Nomura, R.</au><au>Sakaguchi, K.</au><au>Otsuka, Y.</au><au>Shoji, M.</au><au>Schofield, I.</au><au>Connors, M.</au><au>Jordanova, V. K.</au><aucorp>Los Alamos National Lab. (LANL), Los Alamos, NM (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fast modulations of pulsating proton aurora related to subpacket structures of Pc1 geomagnetic pulsations at subauroral latitudes</atitle><jtitle>Geophysical research letters</jtitle><date>2016-08-16</date><risdate>2016</risdate><volume>43</volume><issue>15</issue><spage>7859</spage><epage>7866</epage><pages>7859-7866</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>To understand the role of electromagnetic ion cyclotron (EMIC) waves in determining the temporal features of pulsating proton aurora (PPA) via wave‐particle interactions at subauroral latitudes, high‐time‐resolution (1/8 s) images of proton‐induced N2+ emissions were recorded using a new electron multiplying charge‐coupled device camera, along with related Pc1 pulsations on the ground. The observed Pc1 pulsations consisted of successive rising‐tone elements with a spacing for each element of 100 s and subpacket structures, which manifest as amplitude modulations with a period of a few tens of seconds. In accordance with the temporal features of the Pc1 pulsations, the auroral intensity showed a similar repetition period of 100 s and an unpredicted fast modulation of a few tens of seconds. These results indicate that PPA is generated by pitch angle scattering, nonlinearly interacting with Pc1/EMIC waves at the magnetic equator.
Key Points
Fast (a few tens of seconds) modulation of pulsating proton aurora was observed
Fast modulations of pulsating proton aurora were related with subpacket structures of Pc1 pulsations
The modulation frequency showed a correlation with Pc1 intensity based on a nonlinear theory</abstract><cop>Washington</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/2016GL070008</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-8276 |
| ispartof | Geophysical research letters, 2016-08, Vol.43 (15), p.7859-7866 |
| issn | 0094-8276 1944-8007 |
| language | eng |
| recordid | cdi_osti_scitechconnect_1304820 |
| source | Wiley Online Library Journals Frontfile Complete; Wiley Online Library Free Content; Wiley Online Library AGU Free Content; EZB-FREE-00999 freely available EZB journals |
| subjects | Amplitude Amplitude modulation Auroral protons Auroras Charge coupled devices Charged particles Cyclotrons Equator fast modulation Geomagnetic pulsations Geomagnetism GEOSCIENCES Heliospheric and Magnetospheric Physics Interactions Ion cyclotron waves Latitude Magnetic equator Magnetic fields Modulation Pc1 geomagnetic pulsations Pitch (inclination) Pitch angle pulsating proton aurora Pulsation Repetition Resolution Scattering Structures subpacket structure Temporal variations Wave-particle interactions |
| title | Fast modulations of pulsating proton aurora related to subpacket structures of Pc1 geomagnetic pulsations at subauroral latitudes |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-29T00%3A22%3A40IST&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=Fast%20modulations%20of%20pulsating%20proton%20aurora%20related%20to%20subpacket%20structures%20of%20Pc1%20geomagnetic%20pulsations%20at%20subauroral%20latitudes&rft.jtitle=Geophysical%20research%20letters&rft.au=Ozaki,%20M.&rft.aucorp=Los%20Alamos%20National%20Lab.%20(LANL),%20Los%20Alamos,%20NM%20(United%20States)&rft.date=2016-08-16&rft.volume=43&rft.issue=15&rft.spage=7859&rft.epage=7866&rft.pages=7859-7866&rft.issn=0094-8276&rft.eissn=1944-8007&rft_id=info:doi/10.1002/2016GL070008&rft_dat=%3Cproquest_osti_%3E1819140094%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=1814131108&rft_id=info:pmid/&rfr_iscdi=true |