{"created":"2023-07-25T11:03:28.188939+00:00","id":6369,"links":{},"metadata":{"_buckets":{"deposit":"303fb7da-c4a2-4546-9519-611362930bf6"},"_deposit":{"created_by":4,"id":"6369","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"6369"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00006369","sets":["1259:1260:1261:802:807"]},"author_link":["10202","35677","35675","35676"],"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2003-09","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"154","bibliographicPageStart":"146","bibliographicVolumeNumber":"17","bibliographic_titles":[{"bibliographic_title":"Advances in polar upper atmosphere research"}]}]},"item_1_creator_8":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Hosotani,Akira","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ono,Takayuki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Iizima,Masahide","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kumamoto,Atsushi","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_1_description_1":{"attribute_name":"ページ属性","attribute_value_mlt":[{"subitem_description":"P(論文)","subitem_description_type":"Other"}]},"item_1_description_12":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"The second harmonic wave properties of auroral kilometric radiation(AKR) were examined using data obtained by the Akebono satellite. The results of our statistical analysis indicate that the probability of a harmonic event occurrence is more than 60% of all AKR events. The relationship between the frequencies of the fundamentals and the second harmonics is exactly two times for the upper and lower cut-off frequencies of the spectra as well as the fine structures, within the resolution of the Akebono observations. The intensity ratio of the second harmonics to the fundamentals exhibits a two-fold nature, with both a linear and a quadratic relationship. Further data analyses also revealed that the second harmonic waves of AKR, which propagate in the X-mode, are generated from a source that is identical to that of the fundamental waves that propagate in the O-mode. These results suggest that the mechanism of AKR harmonic structure generation should allow the coexistence of different AKR emission processes.","subitem_description_type":"Other"}]},"item_1_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15094/00006369","subitem_identifier_reg_type":"JaLC"}]},"item_1_publisher_22":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"National Institute of Polar Research"}]},"item_1_source_id_13":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AA11397422","subitem_source_identifier_type":"NCID"}]},"item_1_text_10":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Department of Geophysics, Graduate School of Science, Tohoku University/Department of Geophysics, Graduate School of Science, Tohoku University/Department of Geophysics, Graduate School of Science, Tohoku University/Department of Geophysics, Graduate School of Science, Tohoku University"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2003-09-01"}],"displaytype":"detail","filename":"KJ00000048008.pdf","filesize":[{"value":"2.7 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00000048008","url":"https://nipr.repo.nii.ac.jp/record/6369/files/KJ00000048008.pdf"},"version_id":"dae2fcbc-951d-47c6-86c1-4493c8889d9d"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Second harmonics of auroral kilometric radiation observed by the Akebono satellite","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Second harmonics of auroral kilometric radiation observed by the Akebono satellite"}]},"item_type_id":"1","owner":"4","path":["807"],"pubdate":{"attribute_name":"公開日","attribute_value":"2003-09-01"},"publish_date":"2003-09-01","publish_status":"0","recid":"6369","relation_version_is_last":true,"title":["Second harmonics of auroral kilometric radiation observed by the Akebono satellite"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T12:02:25.347211+00:00"}