{"created":"2023-07-25T11:05:58.101065+00:00","id":9293,"links":{},"metadata":{"_buckets":{"deposit":"6891eb7e-35cb-4552-831d-554a288fc147"},"_deposit":{"created_by":4,"id":"9293","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"9293"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00009293","sets":["1222:1404","1259:906:1243:1141"]},"author_link":["4657","13289","13291","16214"],"item_1_alternative_title_5":{"attribute_name":"論文名よみ","attribute_value_mlt":[{"subitem_alternative_title":"カキ ノ ナンキョク ショウワキチ シュウヘン ノ テイチャクヒョウカ ニオケル クロロフィルa オヨビ ショウサンエン ノウド ノ ジカン ヘンカ"}]},"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2004-11-30","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"164","bibliographicPageStart":"157","bibliographicVolumeNumber":"48","bibliographic_titles":[{"bibliographic_title":"南極資料"},{"bibliographic_title":"Antarctic Record","bibliographic_titleLang":"en"}]}]},"item_1_creator_6":{"attribute_name":"著者名(日)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"小達, 恒夫"},{"creatorName":"オダテ, ツネオ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"福地, 光男"},{"creatorName":"フクチ, ミツオ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]}]},"item_1_creator_8":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Odate, Tsuneo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Fukuchi, Mitsuo","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":"1996年12月30日,1997年1月12日及び21日に,南極昭和基地周辺のリュツォ・ホルム湾の4点において,水深5mから海底の間の数層から海水試料を得た.得られた試料を基にクロロフィルa(Chl a)及び硝酸塩(NO3)濃度の鉛直分布を調べた.いずれの観測点においても表層の成層水中(<20m)でChl a及びNO3濃度が時間とともに大きく変化した.両濃度には有意な負の関係があった(n=40, P<0.01).この関係は,Chl aが1μg l-1増加するときNO3を0.89μM消費することを示唆する.しかしながら,本研究で見られたような厚い海氷(2.0-3.6m)下における光強度は,植物プランクトンが増殖するのに厳しい条件にある.本研究で観測されたChl aの増加が,植物プランクトンが厚い定着氷下で増殖した結果とは考えにくい.好光条件の下でChl aを増加させ,NO3を消費した海水が観測海域へ移流していたと考えられる.この移流が,厚い定着氷下で見かけ上Chl aが増加しNO3が低下する要因と思われる.","subitem_description_type":"Other"}]},"item_1_description_12":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"Seawater samples beneath fast ice were collected from several depths using a Niskin bottle at four sites near Syowa Station, Antarctica, on 30 December 1996, and 12 and 21 January 1997. Vertical distributions of chlorophyll a (Chl a) and nitrate (NO3) concentrations were determined. Substantial temporal changes in Chl a and NO3 concentrations occurred in the surface stratified layer (<20m). There was a significant negative correlation between both the concentrations (n=40, P<0.01). This relationship suggests that an increase of 1μg l-1 of Chl a consumes 0.89μM of NO3 under fast ice. However, light limitation is severe for phytoplankton growing under thick sea ice (2.0-3.6m), as observed in the present study. It is unlikely that the observed increases of Chl a result from phytoplankton growth under heavy fast ice. Seawater, in which Chl a has increased and NO3 has been consumed under favorable light conditions, may be advected into the study area. This advection may be responsible for the apparent increase of Chl a and decrease of NO3 concentrations under the heavy fast ice.","subitem_description_type":"Other"}]},"item_1_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15094/00009293","subitem_identifier_reg_type":"JaLC"}]},"item_1_publisher_22":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報・システム研究機構　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":"551.46","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":"National Institute of Polar Research, Research Organization of Information and Sysytems/National Institute of Polar Research, Research Organization of Information and Sysytems"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2004-11-30"}],"displaytype":"detail","filename":"KJ00002361418.pdf","filesize":[{"value":"873.5 kB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00002361418","url":"https://nipr.repo.nii.ac.jp/record/9293/files/KJ00002361418.pdf"},"version_id":"fdb87e4a-4dbe-4ea3-a026-fc0b307616d4"}]},"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":"夏季の南極昭和基地周辺の定着氷下におけるクロロフィルa及び硝酸塩濃度の時間変化","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"夏季の南極昭和基地周辺の定着氷下におけるクロロフィルa及び硝酸塩濃度の時間変化"},{"subitem_title":"Temporal changes in chlorophyll a and nitrate concentrations under fast ice near Syowa Station, Antarctica, in austral summer","subitem_title_language":"en"}]},"item_type_id":"1","owner":"4","path":["1141","1404"],"pubdate":{"attribute_name":"公開日","attribute_value":"2004-11-30"},"publish_date":"2004-11-30","publish_status":"0","recid":"9293","relation_version_is_last":true,"title":["夏季の南極昭和基地周辺の定着氷下におけるクロロフィルa及び硝酸塩濃度の時間変化"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T12:47:04.603127+00:00"}