{"created":"2023-06-20T14:36:07.473577+00:00","id":2423,"links":{},"metadata":{"_buckets":{"deposit":"4e969219-975f-435e-8822-6354b1ad696e"},"_deposit":{"created_by":1,"id":"2423","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2423"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00002423","sets":["1398:1408:1420","1887:1893","9:10:368:396"]},"author_link":["6243","6242"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Geomagnetic cut off rigidities at Sanriku Balloon Center"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2004-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"63","bibliographicPageStart":"57","bibliographicVolumeNumber":"JAXA-RR-03-001","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構研究開発報告: 大気球研究報告"},{"bibliographic_title":"JAXA Research and Development Report: Research Reports on High Altitude Balloons","bibliographic_titleLang":"en"}]}]},"item_3_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"気球搭載機器によって、大気上層で宇宙線に関する観測を行なう時に、宇宙線の到来方向によって、地球磁場による切断運動量(geomagnetic cut-off rigidity)がどう変化するかを知っている必要がある。特に積分的な宇宙線強度や、1次宇宙線のrigidity分布を比較したり、東西効果を利用してrigidityを求めるという様な場合には、可成り正確な知識を必要とする。この目的のために、1981年の「大気球特集号」に井上葵・和田雅美・近藤一郎の共著で、「三陸上空の地球磁場による宇宙線切断運動量」と題する報告を掲載した。この時は、宇宙線の地球磁場内での軌道の計算は、大型計算機で行っても可成りの時間を要するため、必要最小限の計算から結果を求めた。最近のCPUの性能向上により、Personal ComputerでもCPU Clockが1-3GHzという高速な計算性能を持つ様になった。そこで、前回も若干の推定を行った地球磁場の経年変化の影響を含め、やや詳しい計算を行ったので、その結果を報告する。","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"For the analysis of cosmic ray charged particles observation near the top of the atmosphere, it is important to know the minimum rigidities for several directions. This minimum rigidities are due to the effect of the geomagnetic field, which can be approximated by the spherical harmonic coefficients (IGRF: International Geomagnetic Reference Field). In this paper, geomagnetic cut off rigidities for 41 directions at an altitude of 35 km above Sanriku Balloon Center (SBC: geographic lat.: 39.158 deg N, long: 141.825 deg E). IGRF at 3 different epochs (1955, 1980, 1995) were used in the calculation of the trajectory trace of cosmic rays in the geomagnetic field. It is found that the secular changes of the cut off rigidity are relatively small at this location.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0046714004","subitem_description_type":"Other"}]},"item_3_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-RR-03-001","subitem_description_type":"Other"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構"}]},"item_3_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_3_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1349-1113","subitem_source_identifier_type":"ISSN"}]},"item_3_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA1192675X","subitem_source_identifier_type":"NCID"}]},"item_3_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"University of Tokyo"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"近藤, 一郎"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kondo, Ichiro","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":"46714004.pdf","filesize":[{"value":"611.6 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"46714004.pdf","url":"https://jaxa.repo.nii.ac.jp/record/2423/files/46714004.pdf"},"version_id":"c0b622ac-d3f4-4df7-ae40-308a435013ae"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"気球","subitem_subject_scheme":"Other"},{"subitem_subject":"宇宙線","subitem_subject_scheme":"Other"},{"subitem_subject":"荷電粒子","subitem_subject_scheme":"Other"},{"subitem_subject":"粒子軌道","subitem_subject_scheme":"Other"},{"subitem_subject":"地球磁場切断運動量","subitem_subject_scheme":"Other"},{"subitem_subject":"数値積分","subitem_subject_scheme":"Other"},{"subitem_subject":"半暗部","subitem_subject_scheme":"Other"},{"subitem_subject":"運動方程式","subitem_subject_scheme":"Other"},{"subitem_subject":"balloon","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"cosmic ray","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"charged particle","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"particle trajectory","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"geomagnetic cut-off rigidity","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"numerical integration","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"penumbra","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"equation of motion","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"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":"technical report","resourceuri":"http://purl.org/coar/resource_type/c_18gh"}]},"item_title":"三陸上空の地球磁場による宇宙線切断運動量","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"三陸上空の地球磁場による宇宙線切断運動量"}]},"item_type_id":"3","owner":"1","path":["396","1420","1893"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"2423","relation_version_is_last":true,"title":["三陸上空の地球磁場による宇宙線切断運動量"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T09:22:50.351143+00:00"}