{"created":"2023-07-25T11:04:44.425847+00:00","id":7905,"links":{},"metadata":{"_buckets":{"deposit":"63265bf9-13a8-4aa4-8475-29b567dadfec"},"_deposit":{"created_by":4,"id":"7905","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"7905"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00007905","sets":["1259:906:964"]},"author_link":["454","13066","13064","13072","13070","10589"],"item_1_alternative_title_5":{"attribute_name":"論文名よみ","attribute_value_mlt":[{"subitem_alternative_title":"ナンキョク オアシス ニ オケル タイセキブツ スイシリョウ チュウ ノ ビリョウ ゲンソ ノ ブンプ ニ カンスル チキュウ カガクテキ ケンキュウ ソノ1 DVDP13 コアー シリョウ オヨビ ベスト フォールド ヒルズ ノ タイセキブツ チュウ ノ RA ノ ガンリョウ"}]},"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1977-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"80","bibliographicPageStart":"69","bibliographicVolumeNumber":"58","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":"堀内, 公子"},{"creatorName":"ホリウチ, キミコ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"鳥居, 鉄也"},{"creatorName":"トリイ, テツヤ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"村上, 悠紀雄"},{"creatorName":"ムラカミ, ユキオ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]}]},"item_1_creator_8":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"HORIUCHI, Kimiko","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"TORII, Tetsuya","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"MURAKAMI, Yukio","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_11":{"attribute_name":"抄録(日)","attribute_value_mlt":[{"subitem_description":"ドライバレー地域の掘削で得られたDVDP 13コアー試料とベストフォールド・ヒルズの湖底堆積物について,過塩素酸可溶部と不溶部の炭酸ナトリウム融解抽出部のそれぞれの中のRa量を求めた.Raの定量は放射平衡に達したRnを液体シンチレーションカウンターで測定した.BGが45 cpmのとき,その1/8を測定下限とすると,2gの試料で0.25±0.04×10^<-12> Ci/g のRaの測定が可能である.UとThとの地球化学的な行動が異なることに基づいて考察すると,Uは海水で運ばれ,生成した^<230>Thが沈積しやすく,娘核種の^<226>Raとは一万年弱で放射平衡に達する.放射平衡に達するまで^<226>Raの量は次第にふえ,それから7.5×10^4年の半減期で減少していく.ゆえに過塩素酸可溶部と炭酸ナトリウム融解部のRaを定量することにより,堆積生成以来のおよその年代の古さを知り得る.ドライバレー地域では前者の値が後者より数倍も多く今回の試料中で最も古く,スチニア湖湖底堆積物は最も新しいと推定した.","subitem_description_type":"Other"}]},"item_1_description_12":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"The ignition loss and the Ra content in the 10% HClO_4-soluble fraction and Na_2CO_3-fusion fraction were respectively determined for the 17 core samples (DVDP 13 core), down to the depth of 50 meters and for the four lake deposits in the Vestfold Hills. The determination of Ra was performed by measuring the activity of Ra in radioactive equilibrium state with a liquid scintillation counter. The detection limit of Ra with 2 grams of sample wag (0.25±0.04)×10^<-12> Ci/g, taking one-eighth of the BG counting rate, 45 cpm, as the limit in this case. Based on the differences between U and Th in geochemical behaviors, it is thought that U is transported into sea water and decays to ^<230>Th which tends to precipitate in the site. From ^<230>Th is produced ^<226>Ra which attains the radioactive equilibrium within a little under ten thousand years. And then, the ^<226>Ra content gradually increases with a half life of 7.5×10^4 years. Therefore, by determining the ratio of Ra in the HClO_4-soluble fraction to that in the Na_2CO_3-fusion fraction of a sample, it is possible to determine its age since the time of sedimentation. The results obtained indicate that the Dry Valley sediment is the oldest while the Lake Stinear sediment is the latest because the ratio is the largest for the former and the smallest for the latter.","subitem_description_type":"Other"}]},"item_1_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15094/00007905","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":"551.1/.4:552","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":"Department of Chemistry, Faculty of Science, Tokyo Metropolitan University"},{"subitem_text_language":"en","subitem_text_value":"Chiba Institute of Technology"},{"subitem_text_language":"en","subitem_text_value":"Department of Chemistry, Faculty of Science, Tokyo Metropolitan University"}]},"item_1_text_9":{"attribute_name":"著者所属(日)","attribute_value_mlt":[{"subitem_text_value":"東京都立大学理学部化学教室"},{"subitem_text_value":"千葉工業大学"},{"subitem_text_value":"東京都立大学理学部化学教室"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"1977-03-01"}],"displaytype":"detail","filename":"KJ00002477008.pdf","filesize":[{"value":"1.5 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00002477008","url":"https://nipr.repo.nii.ac.jp/record/7905/files/KJ00002477008.pdf"},"version_id":"234f9e29-a117-468e-876e-4d8a9cde1f7f"}]},"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":"南極オアシスにおける堆積物,水試料中の微量元素の分布に関する地球化学的研究 その1. DVDP13コアー試料およびベストフォールド・ヒルズの堆積物中のRaの含量","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"南極オアシスにおける堆積物,水試料中の微量元素の分布に関する地球化学的研究 その1. DVDP13コアー試料およびベストフォールド・ヒルズの堆積物中のRaの含量"},{"subitem_title":"A Geochemical Study on the Distribution of Some Minor Elements in Deposits and Water Samples of the Antarctic Oases No. 1. The Ra Content of DVDP 13 Core and the Deposits of the Vestfold Hills","subitem_title_language":"en"}]},"item_type_id":"1","owner":"4","path":["964"],"pubdate":{"attribute_name":"公開日","attribute_value":"1977-03-01"},"publish_date":"1977-03-01","publish_status":"0","recid":"7905","relation_version_is_last":true,"title":["南極オアシスにおける堆積物,水試料中の微量元素の分布に関する地球化学的研究 その1. DVDP13コアー試料およびベストフォールド・ヒルズの堆積物中のRaの含量"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T11:50:59.780421+00:00"}