Electron precipitation from EMIC waves: A case study from 31 May 2013
On 31 May 2013 several rising tone electromagnetic ion cyclotron (EMIC) waves with intervals of pulsations of diminishing periods were observed in the magnetic local time afternoon and evening sectors during the onset of a moderate/large geomagnetic storm. The waves were sequentially observed in Fin...
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| Veröffentlicht in: | Journal of geophysical research. Space physics 2015-05, Vol.120 (5), p.3618-3631 |
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| container_title | Journal of geophysical research. Space physics |
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| creator | Clilverd, Mark A. Duthie, Roger Hardman, Rachael Hendry, Aaron T. Rodger, Craig J. Raita, Tero Engebretson, Mark Lessard, Marc R. Danskin, Donald Milling, David K. |
| description | On 31 May 2013 several rising tone electromagnetic ion cyclotron (EMIC) waves with intervals of pulsations of diminishing periods were observed in the magnetic local time afternoon and evening sectors during the onset of a moderate/large geomagnetic storm. The waves were sequentially observed in Finland, Antarctica, and western Canada. Coincident electron precipitation by a network of ground‐based Antarctic Arctic Radiation‐belt Dynamic Deposition VLF Atmospheric Research Konsortia and riometer instruments, as well as the Polar‐orbiting Operational Environmental Satellite (POES) electron telescopes, was also observed. At the same time, POES detected 30–80 keV proton precipitation drifting westward at locations that were consistent with the ground‐based observations, indicating substorm injection. Through detailed modeling of the combination of ground and satellite observations, the characteristics of the EMIC‐induced electron precipitation were identified as latitudinal width of 2–3° or ΔL = 1 Re, longitudinal width ~50° or 3 h magnetic local time, lower cutoff energy 280 keV, typical flux 1 × 104 el cm−2 sr−1 s−1 > 300 keV. The lower cutoff energy of the most clearly defined EMIC rising tone in this study confirms the identification of a class of EMIC‐induced precipitation events with unexpectedly low‐energy cutoffs of |
| doi_str_mv | 10.1002/2015JA021090 |
| format | Article |
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Key Points
EMIC induced electron precipitation with latitudinal width of 2–3°
EMIC induced electron precipitation with lower cutoff energy of 280 keV
Oxygen band EMIC induced electron precipitation driven by substorm</description><identifier>ISSN: 2169-9380</identifier><identifier>EISSN: 2169-9402</identifier><identifier>DOI: 10.1002/2015JA021090</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Antarctica ; Atmospheric research ; Atmospherics ; Cyclotrons ; electromagnetic ion cyclotron ; Electron precipitation ; Electrons ; Energy ; Geophysics ; Ground-based observation ; Low energy ; Magnetic fields ; Networks ; radio propagation ; satellite</subject><ispartof>Journal of geophysical research. Space physics, 2015-05, Vol.120 (5), p.3618-3631</ispartof><rights>2015. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c6282-2fda771c75e33eff8b322757a049ca1a34851e696f3d7b6ca8b0b8f0b576021a3</citedby><cites>FETCH-LOGICAL-c6282-2fda771c75e33eff8b322757a049ca1a34851e696f3d7b6ca8b0b8f0b576021a3</cites><orcidid>0000-0002-4968-9094</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F2015JA021090$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2015JA021090$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,781,785,1418,1434,27929,27930,45579,45580,46414,46838</link.rule.ids></links><search><creatorcontrib>Clilverd, Mark A.</creatorcontrib><creatorcontrib>Duthie, Roger</creatorcontrib><creatorcontrib>Hardman, Rachael</creatorcontrib><creatorcontrib>Hendry, Aaron T.</creatorcontrib><creatorcontrib>Rodger, Craig J.</creatorcontrib><creatorcontrib>Raita, Tero</creatorcontrib><creatorcontrib>Engebretson, Mark</creatorcontrib><creatorcontrib>Lessard, Marc R.</creatorcontrib><creatorcontrib>Danskin, Donald</creatorcontrib><creatorcontrib>Milling, David K.</creatorcontrib><title>Electron precipitation from EMIC waves: A case study from 31 May 2013</title><title>Journal of geophysical research. Space physics</title><addtitle>J. Geophys. Res. Space Physics</addtitle><description>On 31 May 2013 several rising tone electromagnetic ion cyclotron (EMIC) waves with intervals of pulsations of diminishing periods were observed in the magnetic local time afternoon and evening sectors during the onset of a moderate/large geomagnetic storm. The waves were sequentially observed in Finland, Antarctica, and western Canada. Coincident electron precipitation by a network of ground‐based Antarctic Arctic Radiation‐belt Dynamic Deposition VLF Atmospheric Research Konsortia and riometer instruments, as well as the Polar‐orbiting Operational Environmental Satellite (POES) electron telescopes, was also observed. At the same time, POES detected 30–80 keV proton precipitation drifting westward at locations that were consistent with the ground‐based observations, indicating substorm injection. Through detailed modeling of the combination of ground and satellite observations, the characteristics of the EMIC‐induced electron precipitation were identified as latitudinal width of 2–3° or ΔL = 1 Re, longitudinal width ~50° or 3 h magnetic local time, lower cutoff energy 280 keV, typical flux 1 × 104 el cm−2 sr−1 s−1 > 300 keV. The lower cutoff energy of the most clearly defined EMIC rising tone in this study confirms the identification of a class of EMIC‐induced precipitation events with unexpectedly low‐energy cutoffs of <400 keV.
Key Points
EMIC induced electron precipitation with latitudinal width of 2–3°
EMIC induced electron precipitation with lower cutoff energy of 280 keV
Oxygen band EMIC induced electron precipitation driven by substorm</description><subject>Antarctica</subject><subject>Atmospheric research</subject><subject>Atmospherics</subject><subject>Cyclotrons</subject><subject>electromagnetic ion cyclotron</subject><subject>Electron precipitation</subject><subject>Electrons</subject><subject>Energy</subject><subject>Geophysics</subject><subject>Ground-based observation</subject><subject>Low energy</subject><subject>Magnetic fields</subject><subject>Networks</subject><subject>radio propagation</subject><subject>satellite</subject><issn>2169-9380</issn><issn>2169-9402</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqNkV9LwzAUxYsoKOqbH6Dgiw9W702WpPFtjDknmzKd-BjSLIVqt9akVfftzaiK-CDmJf9-J_eenCg6QjhDAHJOANl1HwiChK1ojyCXiewB2f5a0xR2o0PvnyCMNBwh24uGw9KaxlWruHbWFHXR6KYIu9xVy3g4HQ_iN_1q_UXcj432NvZNu1h3txTjqV7HoS49iHZyXXp7-DnvRw-Xw_ngKpncjsaD_iQxnKQkIflCC4FGMEupzfM0o4QIJjT0pNGoaS9laLnkOV2IjBudZpClOWRM8GBM0_3opHu3dtVLa32jloU3tiz1ylatVyhACo7AyX9Q7KWIKAN6_At9qlq3CkZU-CWgAghhgTrtKOMq753NVe2KpXZrhaA2CaifCQScdvhbUdr1n6y6Ht31GQq56TrpVIVv7Pu3SrtnxQUVTD3ejNTl1YzM5L1Uc_oBOaiQ7w</recordid><startdate>201505</startdate><enddate>201505</enddate><creator>Clilverd, Mark A.</creator><creator>Duthie, Roger</creator><creator>Hardman, Rachael</creator><creator>Hendry, Aaron T.</creator><creator>Rodger, Craig J.</creator><creator>Raita, Tero</creator><creator>Engebretson, Mark</creator><creator>Lessard, Marc R.</creator><creator>Danskin, Donald</creator><creator>Milling, David K.</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-4968-9094</orcidid></search><sort><creationdate>201505</creationdate><title>Electron precipitation from EMIC waves: A case study from 31 May 2013</title><author>Clilverd, Mark A. ; Duthie, Roger ; Hardman, Rachael ; Hendry, Aaron T. ; Rodger, Craig J. ; Raita, Tero ; Engebretson, Mark ; Lessard, Marc R. ; Danskin, Donald ; Milling, David K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c6282-2fda771c75e33eff8b322757a049ca1a34851e696f3d7b6ca8b0b8f0b576021a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Antarctica</topic><topic>Atmospheric research</topic><topic>Atmospherics</topic><topic>Cyclotrons</topic><topic>electromagnetic ion cyclotron</topic><topic>Electron precipitation</topic><topic>Electrons</topic><topic>Energy</topic><topic>Geophysics</topic><topic>Ground-based observation</topic><topic>Low energy</topic><topic>Magnetic fields</topic><topic>Networks</topic><topic>radio propagation</topic><topic>satellite</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Clilverd, Mark A.</creatorcontrib><creatorcontrib>Duthie, Roger</creatorcontrib><creatorcontrib>Hardman, Rachael</creatorcontrib><creatorcontrib>Hendry, Aaron T.</creatorcontrib><creatorcontrib>Rodger, Craig J.</creatorcontrib><creatorcontrib>Raita, Tero</creatorcontrib><creatorcontrib>Engebretson, Mark</creatorcontrib><creatorcontrib>Lessard, Marc R.</creatorcontrib><creatorcontrib>Danskin, Donald</creatorcontrib><creatorcontrib>Milling, David K.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of geophysical research. Space physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Clilverd, Mark A.</au><au>Duthie, Roger</au><au>Hardman, Rachael</au><au>Hendry, Aaron T.</au><au>Rodger, Craig J.</au><au>Raita, Tero</au><au>Engebretson, Mark</au><au>Lessard, Marc R.</au><au>Danskin, Donald</au><au>Milling, David K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electron precipitation from EMIC waves: A case study from 31 May 2013</atitle><jtitle>Journal of geophysical research. Space physics</jtitle><addtitle>J. Geophys. Res. Space Physics</addtitle><date>2015-05</date><risdate>2015</risdate><volume>120</volume><issue>5</issue><spage>3618</spage><epage>3631</epage><pages>3618-3631</pages><issn>2169-9380</issn><eissn>2169-9402</eissn><abstract>On 31 May 2013 several rising tone electromagnetic ion cyclotron (EMIC) waves with intervals of pulsations of diminishing periods were observed in the magnetic local time afternoon and evening sectors during the onset of a moderate/large geomagnetic storm. The waves were sequentially observed in Finland, Antarctica, and western Canada. Coincident electron precipitation by a network of ground‐based Antarctic Arctic Radiation‐belt Dynamic Deposition VLF Atmospheric Research Konsortia and riometer instruments, as well as the Polar‐orbiting Operational Environmental Satellite (POES) electron telescopes, was also observed. At the same time, POES detected 30–80 keV proton precipitation drifting westward at locations that were consistent with the ground‐based observations, indicating substorm injection. Through detailed modeling of the combination of ground and satellite observations, the characteristics of the EMIC‐induced electron precipitation were identified as latitudinal width of 2–3° or ΔL = 1 Re, longitudinal width ~50° or 3 h magnetic local time, lower cutoff energy 280 keV, typical flux 1 × 104 el cm−2 sr−1 s−1 > 300 keV. The lower cutoff energy of the most clearly defined EMIC rising tone in this study confirms the identification of a class of EMIC‐induced precipitation events with unexpectedly low‐energy cutoffs of <400 keV.
Key Points
EMIC induced electron precipitation with latitudinal width of 2–3°
EMIC induced electron precipitation with lower cutoff energy of 280 keV
Oxygen band EMIC induced electron precipitation driven by substorm</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/2015JA021090</doi><tpages>14</tpages><orcidid>https://orcid.org/0000-0002-4968-9094</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Antarctica Atmospheric research Atmospherics Cyclotrons electromagnetic ion cyclotron Electron precipitation Electrons Energy Geophysics Ground-based observation Low energy Magnetic fields Networks radio propagation satellite |
| title | Electron precipitation from EMIC waves: A case study from 31 May 2013 |
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