{"_buckets": {"deposit": "ae021f9f-62f3-47ce-86b1-000d36d79ee8"}, "_deposit": {"id": "19808", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "19808"}, "status": "published"}, "_oai": {"id": "oai:nagoya.repo.nii.ac.jp:00019808", "sets": ["1728"]}, "author_link": ["83997", "83998", "83999", "84000"], "item_1615768549627": {"attribute_name": "出版タイプ", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_970fb48d4fbd8a85", "subitem_version_type": "VoR"}]}, "item_9_alternative_title_19": {"attribute_name": "その他のタイトル", "attribute_value_mlt": [{"subitem_alternative_title": "High-precision radiocarbon measurements of the Japanese cedar tree-rings from Yaku Island formed in the 5th century", "subitem_alternative_title_language": "en"}]}, "item_9_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2014-03", "bibliographicIssueDateType": "Issued"}, "bibliographicPageEnd": "151", "bibliographicPageStart": "144", "bibliographicVolumeNumber": "25", "bibliographic_titles": [{"bibliographic_title": "名古屋大学加速器質量分析計業績報告書", "bibliographic_titleLang": "ja"}]}]}, "item_9_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "Radiocarbon (14c) dating method has contributed to the age determination of specimens of the past 50,000 years in geology and archaeology. However, since 14C date is not in agreement with the calendar year, the calibration using a dataset which consists of 14C data of calendar year known samples is required for it. Moreover, there is regional difference of 14C concentration in the atmosphere (regional 14C offset), and therefore, in order lo be high-precision calibration, the dataset for each area needs to be established. The Center for Chronological Research (CCR), Nagoya University has measured 14C data of the tree-ring samples of a Japanese cedar from Yaku Island in Southern Japan, in order to establish a calibration dataset for Japan. This report shows the measurement result of the tree-ring samples of that tree formed in the 5th century. Thirty five 14C dates of the tree-ring samples showed that it will be older than IntCal13 for an average of 35 ± 22 year. These 14C dates were mostly located in the middle of IntCal13 and SHCal13. This measurement result might suggest that 14C concentration in the atmosphere of the Japanese neighborhood fell in the 5th century, and the atmospheric supply from the Southern Hemisphere may have become strong. Sakamoto et al. (2013) measured the tree-ring samples formed in the 5th to 6th century of a Japanese cedar tree from Nagano Prefecture in Central Japan, and they reported that them 14C dates are older than IntCal13. Our result accord with their study, and therefore, at that time can consider a possibility that the influence of the Southern Hemisphere atmosphere had reached to Central Japan.", "subitem_description_language": "en", "subitem_description_type": "Abstract"}, {"subitem_description": "名古屋大学年代測定総合研究センターは，日本産資料の14C暦年較正の高精度化に向け，屋久杉年輪の14C濃度測定を実施している.これまで，屋久杉は過去2000年間の様々な時代に，IntCalより古い14C年代を示すことがわかっている.今回は，5世紀の屋久杉年輪試料の14C濃度測定を行った.その結果，試料の14C年代はIntCalより平均35±22年古いとわかった.坂本ほか(2013) は，5-6世紀前半の長野県宮田村産スギ埋没木が，IntCalより古い14C年代を示すと報告している.今回の結果はこの報告と調和する.これは，5世紀に日本近辺の大気中14C濃度が低下したことを示唆する.今後は，屋久杉においても，6世紀前半まで14C濃度を測定し，坂本ほか(2013)の結果と整合するか検討する.", "subitem_description_language": "ja", "subitem_description_type": "Abstract"}]}, "item_9_description_5": {"attribute_name": "内容記述", "attribute_value_mlt": [{"subitem_description": "名古屋大学年代測定総合研究センターシンポジウム報告", "subitem_description_language": "ja", "subitem_description_type": "Other"}]}, "item_9_identifier_registration": {"attribute_name": "ID登録", "attribute_value_mlt": [{"subitem_identifier_reg_text": "10.18999/sumrua.25.144", "subitem_identifier_reg_type": "JaLC"}]}, "item_9_publisher_32": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "名古屋大学年代測定資料研究センター", "subitem_publisher_language": "ja"}]}, "item_9_select_15": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_access_right": {"attribute_name": "アクセス権", "attribute_value_mlt": [{"subitem_access_right": "open access", "subitem_access_right_uri": "http://purl.org/coar/access_right/c_abf2"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "箱崎, 真隆", "creatorNameLang": "ja"}], "nameIdentifiers": [{"nameIdentifier": "83997", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "中村, 俊夫", "creatorNameLang": "ja"}], "nameIdentifiers": [{"nameIdentifier": "83998", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Hakozaki, Masataka", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "83999", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Nakamura, Toshio", "creatorNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "84000", "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": "2018-02-21"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "hakozaki1442013.pdf", "filesize": [{"value": "4.2 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 4200000.0, "url": {"label": "hakozaki1442013.pdf", "objectType": "fulltext", "url": "https://nagoya.repo.nii.ac.jp/record/19808/files/hakozaki1442013.pdf"}, "version_id": "6e8a7d6f-d214-4a2a-8b70-d337ba560dcc"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "Japanese cedar", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Yaku Island", "subitem_subject_scheme": "Other"}, {"subitem_subject": "14C dating", "subitem_subject_scheme": "Other"}, {"subitem_subject": "regional 14C offeet", "subitem_subject_scheme": "Other"}, {"subitem_subject": "14C calibration", "subitem_subject_scheme": "Other"}]}, "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": "紀元5世紀の屋久杉年輪試料をもちいた高精度放射性炭素年代測定", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "紀元5世紀の屋久杉年輪試料をもちいた高精度放射性炭素年代測定", "subitem_title_language": "ja"}]}, "item_type_id": "9", "owner": "1", "path": ["1728"], "permalink_uri": "https://doi.org/10.18999/sumrua.25.144", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2015-05-12"}, "publish_date": "2015-05-12", "publish_status": "0", "recid": "19808", "relation": {}, "relation_version_is_last": true, "title": ["紀元5世紀の屋久杉年輪試料をもちいた高精度放射性炭素年代測定"], "weko_shared_id": -1}