{"created":"2023-06-19T09:11:56.244937+00:00","id":23758,"links":{},"metadata":{"_buckets":{"deposit":"9e158690-e3d7-41fe-8c3b-9358796e0d29"},"_deposit":{"created_by":1,"id":"23758","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"23758"},"status":"published"},"_oai":{"id":"oai:kumadai.repo.nii.ac.jp:00023758","sets":["448:449"]},"author_link":["104412","104410","104417","104411","104413","104415","104416","104414","104409","104408"],"item_16_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2010-10","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"8","bibliographicPageStart":"1","bibliographicVolumeNumber":"107","bibliographic_titles":[{"bibliographic_title":"Journal of Geochemical Exploration"}]}]},"item_16_creator_3":{"attribute_name":"別言語の著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"細野, 高啓"}],"nameIdentifiers":[{"nameIdentifier":"104415","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"谷口, 真人"}],"nameIdentifiers":[{"nameIdentifier":"104416","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"岡村, 慶"}],"nameIdentifiers":[{"nameIdentifier":"104417","nameIdentifierScheme":"WEKO"}]}]},"item_16_description_17":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_16_description_46":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"論文(Article)","subitem_description_type":"Other"}]},"item_16_description_5":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Three marine sediment cores from Osaka Bay were analyzed for 210Pb geochronology, heavy metal concentrations (Zn, Cu, and Pb) and stable lead isotope ratios (206Pb/207Pb) in order to reconstruct high-resolution heavy metal pollution history from 1900-2006. Anthropogenic metal accumulation in sediments peaked in 1970 in agreement with the high economic growth period in Japan. The comparison of temporal patterns of 206Pb/207Pb ratio with other areas of Japan suggested that the heavy metals, imported from several different countries during the periods of economic growth (1955 to 1973), are the main pollution source for the country. For the period 1970-2006, the sediment data reflect the result of stricter environmental regulations applied after the late 1960s. However, heavy metal concentrations in the surface sediments are still elevated to levels several times higher than the levels at the bottoms of the cores. Additionally, the lead isotope ratio does not show significant change after the 1980s. Secondary heavy metal pollution through the mixing of deeper polluted sediment appears to be the likely reason for the deterioration of present time submarine sediment environments. In conclusion, this study has demonstrated that it is difficult to recover over a period of several years the water quality of a bay, once it is heavily polluted.","subitem_description_type":"Other"}]},"item_16_description_77":{"attribute_name":"URL","attribute_value_mlt":[{"subitem_description":"http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VCP-507BHKJ-1&_user=4545557&_coverDate=10%2F31%2F2010&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_acct=C000008298&_version=1&_urlVersion=0&_userid=4545557&md5=4468d8e82c83e0251fe7574065c60347&searchtype=a","subitem_description_type":"Other"}]},"item_16_publisher_36":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Elsevier BV"}]},"item_16_relation_11":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1016/j.gexplo.2010.05.003","subitem_relation_type_select":"DOI"}}]},"item_16_relation_16":{"attribute_name":"情報源(ISSN)","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"03756742"}]}]},"item_16_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"© 2010 Elsevier B.V. All rights reserved."}]},"item_16_subject_20":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"519.4","subitem_subject_scheme":"NDC"},{"subitem_subject":"452","subitem_subject_scheme":"NDC"}]},"item_16_text_18":{"attribute_name":"形態","attribute_value_mlt":[{"subitem_text_value":"332520 bytes"}]},"item_16_text_47":{"attribute_name":"資源タイプ・ローカル","attribute_value_mlt":[{"subitem_text_value":"雑誌掲載論文"}]},"item_16_text_48":{"attribute_name":"資源タイプ・NII","attribute_value_mlt":[{"subitem_text_value":"Journal Article"}]},"item_16_text_49":{"attribute_name":"資源タイプ・DCMI","attribute_value_mlt":[{"subitem_text_value":"text"}]},"item_16_text_50":{"attribute_name":"資源タイプ・ローカル表示コード","attribute_value_mlt":[{"subitem_text_value":"01"}]},"item_16_version_type_19":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Hosono, Takahiro"}],"nameIdentifiers":[{"nameIdentifier":"104408","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Su, Chih-Chieh"}],"nameIdentifiers":[{"nameIdentifier":"104409","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Okamura, Kei"}],"nameIdentifiers":[{"nameIdentifier":"104410","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Taniguchi, Makoto"}],"nameIdentifiers":[{"nameIdentifier":"104411","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-03-02"}],"displaytype":"detail","filename":"JGE_2010_Hosono-r.pdf","filesize":[{"value":"332.5 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"JGE_2010_Hosono-r.pdf","url":"https://kumadai.repo.nii.ac.jp/record/23758/files/JGE_2010_Hosono-r.pdf"},"version_id":"2beb1367-e431-4b3a-b840-bff6d79099d6"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Pollution","subitem_subject_scheme":"Other"},{"subitem_subject":"Osaka Bay","subitem_subject_scheme":"Other"},{"subitem_subject":"210Pb dating","subitem_subject_scheme":"Other"},{"subitem_subject":"Heavy meta","subitem_subject_scheme":"Other"},{"subitem_subject":"Lead isotope ratio","subitem_subject_scheme":"Other"}]},"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Historical record of heavy metal pollution deduced by lead isotope ratios in core sediments from the Osaka Bay, Japan","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Historical record of heavy metal pollution deduced by lead isotope ratios in core sediments from the Osaka Bay, Japan"}]},"item_type_id":"16","owner":"1","path":["449"],"pubdate":{"attribute_name":"公開日","attribute_value":"2010-11-01"},"publish_date":"2010-11-01","publish_status":"0","recid":"23758","relation_version_is_last":true,"title":["Historical record of heavy metal pollution deduced by lead isotope ratios in core sediments from the Osaka Bay, Japan"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-19T18:34:41.349349+00:00"}