{"created":"2023-07-25T11:04:28.501212+00:00","id":7597,"links":{},"metadata":{"_buckets":{"deposit":"86006eef-11f5-417f-864d-34611a018452"},"_deposit":{"created_by":4,"id":"7597","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"7597"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00007597","sets":["1259:906:945"]},"author_link":["11220","11216","10243","10403","10669","10665"],"item_1_alternative_title_5":{"attribute_name":"論文名よみ","attribute_value_mlt":[{"subitem_alternative_title":"ヤカン ノ デンリソウ キュウシュウ 1 ダイ2 8ジ ナンキョク カンソクセン ジョウ タンパ デンカイ キョウド ソクテイ"}]},"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1971-01","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"18","bibliographicPageStart":"1","bibliographicVolumeNumber":"39","bibliographic_titles":[{"bibliographic_title":"南極資料"}]}]},"item_1_creator_6":{"attribute_name":"著者名(日)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"若井, 登"},{"creatorName":"ワカイ, ノボル","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"大瀬, 正美"},{"creatorName":"オオセ, マサミ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"田之畑, 一男"},{"creatorName":"タノハタ, カズオ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]}]},"item_1_creator_8":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"WAKAI, Noboru","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"OSE, Masami","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"TANOHATA, Kazuo","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":"Observations of the nighttime ionospheric absorption have been carried out since 1958 on board the ship for the Japanese antarctic research. Field intensities of the HF standard frequency signals at different frequencies were measured during hours around midnight. In this paper, techniques of the measurement for extracting a relatively small quantity of the nighttime absorption are described. Existence of the absorption is confirmed from the fact that the rate of decrease of field intensities against the ground range at a lower frequency is much larger than that at a higher frequency. Moreover, the dependence of absorption upon the solar activity is found out from the measurement over nine years in the declining epoch of the last solar cycle. A provisional expression for estimating the nighttime absorption is proposed.","subitem_description_type":"Other"}]},"item_1_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15094/00007597","subitem_identifier_reg_type":"JaLC"}]},"item_1_publisher_22":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"国立極地研究所"}]},"item_1_source_id_13":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AN00181831","subitem_source_identifier_type":"NCID"}]},"item_1_source_id_20":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00857289","subitem_source_identifier_type":"ISSN"}]},"item_1_subject_21":{"attribute_name":"国際十進分類法","attribute_value_mlt":[{"subitem_subject":"551.510.535/.537","subitem_subject_scheme":"UDC"}]},"item_1_text_10":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Hiraiso Branch, Radio Research Laboratories"},{"subitem_text_language":"en","subitem_text_value":"Radio Research Laboratories"},{"subitem_text_language":"en","subitem_text_value":"Yamagawa Radio Wave Observatory, Radio Research Laboratories"}]},"item_1_text_9":{"attribute_name":"著者所属(日)","attribute_value_mlt":[{"subitem_text_value":"電波研究所平磯支所"},{"subitem_text_value":"電波研究所電波部"},{"subitem_text_value":"電波研究所山川電波観測所"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"1971-01-01"}],"displaytype":"detail","filename":"KJ00002476597.pdf","filesize":[{"value":"8.5 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00002476597","url":"https://nipr.repo.nii.ac.jp/record/7597/files/KJ00002476597.pdf"},"version_id":"cc34b5c8-8895-44f7-a902-f3d5604c85eb"}]},"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":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"夜間の電離層吸収 I.第2-8次南極観測船上短波電界強度測定","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"夜間の電離層吸収 I.第2-8次南極観測船上短波電界強度測定"},{"subitem_title":"HF radio wave absorption in the nighttime. Part I. Measurements of the field intensity of HF radio waves on board the ship for the 2nd(1958)-8th(1966) Japanese Antarctic Research Expedition","subitem_title_language":"en"}]},"item_type_id":"1","owner":"4","path":["945"],"pubdate":{"attribute_name":"公開日","attribute_value":"1971-01-01"},"publish_date":"1971-01-01","publish_status":"0","recid":"7597","relation_version_is_last":true,"title":["夜間の電離層吸収 I.第2-8次南極観測船上短波電界強度測定"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T11:54:27.304294+00:00"}