{"created":"2021-03-01T06:17:03.196203+00:00","id":513,"links":{},"metadata":{"_buckets":{"deposit":"da9edcb8-e075-4ff7-8f06-480e8a79e484"},"_deposit":{"id":"513","owners":[],"pid":{"revision_id":0,"type":"depid","value":"513"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00000513","sets":["75:121:122","9:10:11"]},"item_2_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"A review of field-aligned acceleration by anomalous resistivity"}]},"item_2_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1980-02-29","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"22","bibliographicPageStart":"1","bibliographicVolumeNumber":"68","bibliographic_titles":[{"bibliographic_title":"南極資料"}]}]},"item_2_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"異常抵抗とそれを起こす電流励起不安定性の物理的機構についてレビューし,オーロラ電子の沿磁力線加速に適用する．異常｢抵抗｣が加速に効くというパラドックスは｢抵抗｣が速度の異なる電子に対して異なって働くことを考慮すれば解決される(Papadopoulos : Rev. Geophys. Space Phys.,15,113,1977).沿磁力線電流を担う大部分の電子は，乱流状態となった静電波との衝突により散乱減速され沿磁力線電場の維持に寄与する．この電場により速度分布のテイル付近の電子は加速される．上部電離層で可能な不安定性の中で，静電イオンサイクロトロン不安定性が最も小さな電子のドリフト速度で励起され，比較的小さな電流で不安定となる(Kindel and Kennel: J.Geophys.Res.,76,3055,1971).佐藤(磁気圈プラズマ波動に関するシンポジウム，66，1978)により提唱された沿磁力線加速の数値モデルについて触れ，電離層の重要な役割について指摘する．抵抗性の外部回路(電離層)の存在は沿磁力線電場,異常抵抗,電離層に降下する逃走（加速）電子の形成を因果関係まで含めて解決するのに不可欠である.","subitem_description_type":"Abstract"},{"subitem_description":"Basic concepts of anomalous resistivity and the physical mechanism of current driven instabilities are reviewed with a view to applying them to　the　field-aligned acceleration of auroral electrons. A paradox that an anomalous ‘resistivity’ contributes to acceleration of electrons is resolved by taking into account its different effects on electrons in different parts of the distribution function (Papadopoulos: Rev. Geophys. Space Phys., 15，113，1977); bulk electrons carrying a field-aligned current are anomalously scattered and decelerated by collisions with turbulent electrostatic waves and contribute to maintain parallel electric field，which in turn accelerates electrons in the tail of the distribution. Among the possible instabilities the electrostatic ion cyclotron instability has the lowest threshold velocity for the wide range of Te/Ti including Te/Ti～1，which is valid in the upper ionosphere. The electrostatic ion cyclotron wave is destabilized by a relatively small field-aligned current in the upper ionosphere (Kindel and Kennel: J. Geophys. Res., 76，3055, 1971). A numerical model of the field-aligned acceleration by Sato (Symposium on Plasma Waves in the Magnetosphere, 66, 1978) is reviewed in order to emphasize an important role of the ionosphere; the existence of a resistive external circuit (ionosphere) is necessary for resolving the ‘chicken-egg’ cause and effect relationship among parallel electric field， anomalous resistivity and formation of runaway (accelerated) electrons precipitating downward into the ionosphere.","subitem_description_type":"Abstract"}]},"item_2_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"1738","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Miura, Akira"}]}]},"item_2_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"国立極地研究所"}]},"item_2_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"国立極地研究所"}]},"item_2_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00181831","subitem_source_identifier_type":"NCID"}]},"item_2_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00857289","subitem_source_identifier_type":"ISSN"}]},"item_2_subject_15":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"450","subitem_subject_scheme":"NDC"}]},"item_2_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"National Institute of Polar Research"}]},"item_2_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学理学部地球物理研究施設"},{"subitem_text_value":"Geophysics Research Laboratory, University of Tokyo"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"三浦, 彰"}],"nameIdentifiers":[{"nameIdentifier":"1737","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-05-30"}],"displaytype":"detail","filename":"Anomalous-Resistivity.pdf","filesize":[{"value":"2.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"Anomalous-Resistivity.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/513/files/Anomalous-Resistivity.pdf"},"version_id":"21573d1b-5a7b-44d2-b54a-d257f641852a"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"異常抵抗による沿磁力線加速 : Review","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"異常抵抗による沿磁力線加速 : Review"}]},"item_type_id":"2","owner":"1","path":["11","122"],"pubdate":{"attribute_name":"公開日","attribute_value":"2011-02-22"},"publish_date":"2011-02-22","publish_status":"0","recid":"513","relation_version_is_last":true,"title":["異常抵抗による沿磁力線加速 : Review"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T03:41:30.891856+00:00"}