{"created":"2023-06-20T14:36:33.528826+00:00","id":2886,"links":{},"metadata":{"_buckets":{"deposit":"e8e934c5-3aa4-4258-9693-e29f6a326e0a"},"_deposit":{"created_by":1,"id":"2886","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2886"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00002886","sets":["1398:1485:1486","1543:1811:1812","1887:1891","9:789:794:797"]},"author_link":["9577","9579","9586","9587","9573","9582","9583","9570","9572","9575","9576","9584","9578","9574","9585","9571","9568","9569","9581","9580"],"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-01-31","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"16","bibliographicPageStart":"11","bibliographicVolumeNumber":"JAXA-SP-18-009","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構特別資料: 第15回「宇宙環境シンポジウム」講演論文集"},{"bibliographic_title":"JAXA Special Publication: Proceedings of the 15th Spacecraft Environment Symposium","bibliographic_titleLang":"en"}]}]},"item_5_description_14":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"第15回宇宙環境シンポジウム (2018年10月30日-31日. 東北大学青葉サイエンスホール), 仙台市, 宮城県","subitem_description_type":"Other"}]},"item_5_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"放射線帯外帯の相対論的電子は、磁気圏内で発生するプラズマ波動との相互作用により散乱され地球大気に降下する。この過程は、磁気嵐の主相における外帯消失の要因の一つと考えられており、降下した相対論的電子は、国際宇宙ステーションや低軌道衛星への悪影響、下部電離圏での電子密度増加に伴う通信障害を引き起こし得る。本研究では、放射線帯の相対論的電子を降下消失させる電磁イオンサイクロトロン（EMIC）波動に着目した。電子降下は、VLF/LF帯の人工電波を用いて観測した。地上と電離圏下端の間を長距離伝搬する電波の信号は、電子降下に伴う電離圏D領域高度での局所的な擾乱により振幅・位相変調をうける。本研究では、複合地上観測により、2017年3月27日の磁気嵐主相時のEMIC波動とそれに伴う相対論的電子降下の時空間対応を調べた。その結果、数10秒から数分の時間スケールで変化するEMIC波動強度の増大時に、相対論的電子が散乱され大気に降下消失することが明らかとなった。","subitem_description_type":"Abstract"}]},"item_5_description_18":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"形態: カラー図版あり","subitem_description_type":"Other"}]},"item_5_description_19":{"attribute_name":"内容記述（英）","attribute_value_mlt":[{"subitem_description":"Physical characteristics: Original contains color illustrations","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA1830019003","subitem_description_type":"Other"}]},"item_5_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-SP-18-009","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構(JAXA)"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_5_source_id_22":{"attribute_name":"ISSNONLINE","attribute_value_mlt":[{"subitem_source_identifier":"2433-2232","subitem_source_identifier_type":"ISSN"}]},"item_5_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東北大学"},{"subitem_text_value":"東北大学"},{"subitem_text_value":"東北大学"},{"subitem_text_value":"東北大学"},{"subitem_text_value":"東北大学"},{"subitem_text_value":"東北大学"},{"subitem_text_value":"名古屋大学宇宙地球環境研究所(ISEE)"},{"subitem_text_value":"名古屋大学宇宙地球環境研究所(ISEE)"},{"subitem_text_value":"名古屋大学宇宙地球環境研究所(ISEE)"},{"subitem_text_value":"Athabasca University"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Tohoku University"},{"subitem_text_language":"en","subitem_text_value":"Tohoku University"},{"subitem_text_language":"en","subitem_text_value":"Tohoku University"},{"subitem_text_language":"en","subitem_text_value":"Tohoku University"},{"subitem_text_language":"en","subitem_text_value":"Tohoku University"},{"subitem_text_language":"en","subitem_text_value":"Tohoku University"},{"subitem_text_language":"en","subitem_text_value":"Institute for Space-Earth Environmental Research, Nagoya University (ISEE)"},{"subitem_text_language":"en","subitem_text_value":"Institute for Space-Earth Environmental Research, Nagoya University (ISEE)"},{"subitem_text_language":"en","subitem_text_value":"Institute for Space-Earth Environmental Research, Nagoya University (ISEE)"},{"subitem_text_language":"en","subitem_text_value":"Athabasca University"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"平井, あすか"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"土屋, 史紀"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"小原, 隆博"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"笠羽, 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Hiroaki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Shiokawa, Kazuo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Miyoshi, Yoshizumi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kurita, Satoshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Connors, Martin","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-15"}],"displaytype":"detail","filename":"AA1830019003.pdf","filesize":[{"value":"2.2 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