Transient ionization of the mesosphere during auroral breakup: Arase satellite and ground-based conjugate observations at Syowa Station
Abstract Transient mesospheric echo in the VHF range was detected at an altitude of 65–70 km during the auroral breakup that occurred from 2220 to 2226 UT on June 30, 2017. During this event, the footprint of the Arase satellite was located within the field of view of the all-sky imagers at Syowa St...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-01-01
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| Series: | Earth, Planets and Space |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s40623-019-0989-7 |
| _version_ | 1819265660893528064 |
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| author | Ryuho Kataoka Takanori Nishiyama Yoshimasa Tanaka Akira Kadokura Herbert Akihito Uchida Yusuke Ebihara Mitsumu K. Ejiri Yoshihiro Tomikawa Masaki Tsutsumi Kaoru Sato Yoshizumi Miyoshi Kazuo Shiokawa Satoshi Kurita Yoshiya Kasahara Mitsunori Ozaki Keisuke Hosokawa Shoya Matsuda Iku Shinohara Takeshi Takashima Tatsuhiko Sato Takefumi Mitani Tomoaki Hori Nana Higashio |
| author_facet | Ryuho Kataoka Takanori Nishiyama Yoshimasa Tanaka Akira Kadokura Herbert Akihito Uchida Yusuke Ebihara Mitsumu K. Ejiri Yoshihiro Tomikawa Masaki Tsutsumi Kaoru Sato Yoshizumi Miyoshi Kazuo Shiokawa Satoshi Kurita Yoshiya Kasahara Mitsunori Ozaki Keisuke Hosokawa Shoya Matsuda Iku Shinohara Takeshi Takashima Tatsuhiko Sato Takefumi Mitani Tomoaki Hori Nana Higashio |
| author_sort | Ryuho Kataoka |
| collection | DOAJ |
| description | Abstract Transient mesospheric echo in the VHF range was detected at an altitude of 65–70 km during the auroral breakup that occurred from 2220 to 2226 UT on June 30, 2017. During this event, the footprint of the Arase satellite was located within the field of view of the all-sky imagers at Syowa Station in the Antarctic. Auroral observations at Syowa Station revealed the dominant precipitation of relatively soft electrons during the auroral breakup. A corresponding spike in cosmic noise absorption was also observed at Syowa Station, while the Arase satellite observed a flux enhancement of > 100 keV electrons and a broadband noise without detecting chorus waves or electromagnetic ion cyclotron waves. A general-purpose Monte Carlo particle transport simulation code was used to quantitatively evaluate the ionization in the middle atmosphere. Results of this study indicate that the precipitation of energetic electrons of > 100 keV, rather than X-rays from the auroral electrons, played a dominant role in the transient and deep (65–70 km) mesospheric ionization during the observed auroral breakup. |
| first_indexed | 2024-12-23T20:48:55Z |
| format | Article |
| id | doaj.art-aaf6da4cd7f742bf8232d03c550591e6 |
| institution | Directory Open Access Journal |
| issn | 1880-5981 |
| language | English |
| last_indexed | 2024-12-23T20:48:55Z |
| publishDate | 2019-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Earth, Planets and Space |
| spelling | doaj.art-aaf6da4cd7f742bf8232d03c550591e62022-12-21T17:31:42ZengSpringerOpenEarth, Planets and Space1880-59812019-01-0171111010.1186/s40623-019-0989-7Transient ionization of the mesosphere during auroral breakup: Arase satellite and ground-based conjugate observations at Syowa StationRyuho Kataoka0Takanori Nishiyama1Yoshimasa Tanaka2Akira Kadokura3Herbert Akihito Uchida4Yusuke Ebihara5Mitsumu K. Ejiri6Yoshihiro Tomikawa7Masaki Tsutsumi8Kaoru Sato9Yoshizumi Miyoshi10Kazuo Shiokawa11Satoshi Kurita12Yoshiya Kasahara13Mitsunori Ozaki14Keisuke Hosokawa15Shoya Matsuda16Iku Shinohara17Takeshi Takashima18Tatsuhiko Sato19Takefumi Mitani20Tomoaki Hori21Nana Higashio22National Institute of Polar ResearchNational Institute of Polar ResearchNational Institute of Polar ResearchNational Institute of Polar ResearchNational Institute of Polar ResearchResearch Institute for Sustainable Humanosphere, Kyoto UniversityNational Institute of Polar ResearchNational Institute of Polar ResearchNational Institute of Polar ResearchDepartment of Earth and Planetary Science, University of TokyoInstitute for Space-Earth Environmental Research, Nagoya UniversityInstitute for Space-Earth Environmental Research, Nagoya UniversityInstitute for Space-Earth Environmental Research, Nagoya UniversityGraduate School of Natural Science and Technology, Kanazawa UniversityGraduate School of Natural Science and Technology, Kanazawa UniversityDepartment of Communication Engineering and Informatics, The University of Electro-CommunicationsInstitute of Space and Astronautical Science, Japan Aerospace Exploration AgencyInstitute of Space and Astronautical Science, Japan Aerospace Exploration AgencyInstitute of Space and Astronautical Science, Japan Aerospace Exploration AgencyJapan Atomic Energy AgencyInstitute of Space and Astronautical Science, Japan Aerospace Exploration AgencyInstitute for Space-Earth Environmental Research, Nagoya UniversityResearch and Development Directorate, Japan Aerospace Exploration AgencyAbstract Transient mesospheric echo in the VHF range was detected at an altitude of 65–70 km during the auroral breakup that occurred from 2220 to 2226 UT on June 30, 2017. During this event, the footprint of the Arase satellite was located within the field of view of the all-sky imagers at Syowa Station in the Antarctic. Auroral observations at Syowa Station revealed the dominant precipitation of relatively soft electrons during the auroral breakup. A corresponding spike in cosmic noise absorption was also observed at Syowa Station, while the Arase satellite observed a flux enhancement of > 100 keV electrons and a broadband noise without detecting chorus waves or electromagnetic ion cyclotron waves. A general-purpose Monte Carlo particle transport simulation code was used to quantitatively evaluate the ionization in the middle atmosphere. Results of this study indicate that the precipitation of energetic electrons of > 100 keV, rather than X-rays from the auroral electrons, played a dominant role in the transient and deep (65–70 km) mesospheric ionization during the observed auroral breakup.http://link.springer.com/article/10.1186/s40623-019-0989-7AuroraMesosphereX-raysEnergetic electrons |
| spellingShingle | Ryuho Kataoka Takanori Nishiyama Yoshimasa Tanaka Akira Kadokura Herbert Akihito Uchida Yusuke Ebihara Mitsumu K. Ejiri Yoshihiro Tomikawa Masaki Tsutsumi Kaoru Sato Yoshizumi Miyoshi Kazuo Shiokawa Satoshi Kurita Yoshiya Kasahara Mitsunori Ozaki Keisuke Hosokawa Shoya Matsuda Iku Shinohara Takeshi Takashima Tatsuhiko Sato Takefumi Mitani Tomoaki Hori Nana Higashio Transient ionization of the mesosphere during auroral breakup: Arase satellite and ground-based conjugate observations at Syowa Station Earth, Planets and Space Aurora Mesosphere X-rays Energetic electrons |
| title | Transient ionization of the mesosphere during auroral breakup: Arase satellite and ground-based conjugate observations at Syowa Station |
| title_full | Transient ionization of the mesosphere during auroral breakup: Arase satellite and ground-based conjugate observations at Syowa Station |
| title_fullStr | Transient ionization of the mesosphere during auroral breakup: Arase satellite and ground-based conjugate observations at Syowa Station |
| title_full_unstemmed | Transient ionization of the mesosphere during auroral breakup: Arase satellite and ground-based conjugate observations at Syowa Station |
| title_short | Transient ionization of the mesosphere during auroral breakup: Arase satellite and ground-based conjugate observations at Syowa Station |
| title_sort | transient ionization of the mesosphere during auroral breakup arase satellite and ground based conjugate observations at syowa station |
| topic | Aurora Mesosphere X-rays Energetic electrons |
| url | http://link.springer.com/article/10.1186/s40623-019-0989-7 |
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