{"_buckets": {"deposit": "013a369b-6e9e-4f1f-b838-bfb64c822775"}, "_deposit": {"created_by": 10, "id": "6894", "owner": "10", "owners": [10], "owners_ext": {"displayname": "", "username": ""}, "pid": {"revision_id": 0, "type": "depid", "value": "6894"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00006894", "sets": ["1713510153521"]}, "author_link": ["82", "1598"], "control_number": "6894", "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2025-01-31", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "89", "bibliographicPageEnd": "8", "bibliographicPageStart": "1", "bibliographic_titles": [{"bibliographic_title": "防災科学技術研究所 研究報告", "bibliographic_titleLang": "ja"}, {"bibliographic_title": "Report of the National Research Institute for Earth Science and Disaster Resilience", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "We found a pumice clast from the 2021 eruption of Fukutoku-Oka-no-Ba (FOB eruption) in Koura beach, eastern Shimane Prefecture. The pumice clast shows a chocolate chip cookie-like appearance, with a gray matrix and black-colored spots, which are clear characteristics of the products of the FOB eruption. Petrographic and geochemical analyses evidence the pumice is product of FOB eruption: The phenocryst assemblage of the pumice is plagioclase, clinopyroxene, and olivine.\nThe groundmass glass of the pumice has trachytic composition with SiO2 content of ~65.8 wt.% and alkali (Na2O+K2O) of 10.6 wt.%. The mineral chemistry of the pumice is similar with that of FOB pumice. These all characteristics are identical with that of the eruptive product of FOB. The findings of FOB pumice in this study marks the second report in the San’in region. This suggests that the arrival of FOB pumice in San’in region may have been widespread. The pumice drifted westward from Fukutoku-Oka-no-Ba, reached the Ryukyu Islands, traveled northward through the Japan Sea by the Tsushima Warm Current, and eventually reached the San’in region.", "subitem_description_language": "en", "subitem_description_type": "Abstract"}, {"subitem_description": "2021年の福徳岡ノ場（Fukutoku-Oka-no-Ba: FOB）の噴火に由来する軽石を島根県東部の古浦海水浴場において発見した．この軽石は灰色の基質に黒色の斑点が散在する特徴的な外観を有し，FOB噴火の産物の特有の産状を示す．岩石学および地球化学的分析により，この軽石がFOB 噴火由来であることが明らかになった．軽石中の斑晶は斜長石，単斜輝石，カンラン石で構成されている．また，石基ガラスはSiO2含有量が約65.8重量%，アルカリ元素（Na2O+K2O）濃度が10.6重量% を有する粗面岩質組成を示す．さらに，鉱物化学組成もFOB軽石の特徴と一致している．すなわち，この軽石の岩石学的特徴と地球化学的特徴はすべてFOB噴火の噴出物と整合する．本研究でのFOB軽石の発見は山陰地域における報告として2例目である．このことはFOB 軽石が山陰地域に広範囲に分布している可能性を示唆している．軽石は福徳岡ノ場から西方へ漂流し，琉球列島に到達後，対馬暖流により日本海を北上し，最終的に山陰地域に到達したと考えられる．", "subitem_description_language": "ja", "subitem_description_type": "Abstract"}]}, "item_10001_description_6": {"attribute_name": "内容記述", "attribute_value_mlt": [{"subitem_description": "(ONLINE先行公開につき、ページ数および発行年情報は仮のものになります。引用にはDOIをご利用ください)", "subitem_description_language": "ja", "subitem_description_type": "Other"}]}, "item_10001_identifier_registration": {"attribute_name": "ID登録", "attribute_value_mlt": [{"subitem_identifier_reg_text": "10.24732/NIED.00006894", "subitem_identifier_reg_type": "JaLC"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "防災科学技術研究所", "subitem_publisher_language": "ja"}]}, "item_10001_source_id_9": {"attribute_name": "収録物識別子", "attribute_value_mlt": [{"subitem_source_identifier": "1347-7471", "subitem_source_identifier_type": "EISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "三輪, 学央", "creatorNameLang": "ja"}, {"creatorName": "ミワ, タカヒロ", "creatorNameLang": "ja-Kana"}, {"creatorName": "MIWA, Takahiro", "creatorNameLang": "en"}], "familyNames": [{"familyName": "三輪", "familyNameLang": "ja"}, {"familyName": "ミワ", "familyNameLang": "ja-Kana"}, {"familyName": "MIWA", "familyNameLang": "en"}], "givenNames": [{"givenName": "学央", "givenNameLang": "ja"}, {"givenName": "タカヒロ", "givenNameLang": "ja-Kana"}, {"givenName": "Takahiro", "givenNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "82", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "長井, 雅史", "creatorNameLang": "ja"}, {"creatorName": "ナガイ, マサシ", "creatorNameLang": "ja-Kana"}, {"creatorName": "NAGAI, Masashi", "creatorNameLang": "en"}], "familyNames": [{"familyName": "長井", "familyNameLang": "ja"}, {"familyName": "ナガイ", "familyNameLang": "ja-Kana"}, {"familyName": "NAGAI", "familyNameLang": "en"}], "givenNames": [{"givenName": "雅史", "givenNameLang": "ja"}, {"givenName": "マサシ", "givenNameLang": "ja-Kana"}, {"givenName": "Masashi", "givenNameLang": "en"}], "nameIdentifiers": [{"nameIdentifier": "1598", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "date": [{"dateType": "Available", "dateValue": "2025-01-23"}], "download_preview_message": "", "fileDate": [{"fileDateType": "Issued", "fileDateValue": "2025-01-31"}], "file_order": 0, "filename": "R89-5.pdf", "filesize": [{"value": "2.2 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "application/pdf", "size": 2200000.0, "url": {"url": "https://nied-repo.bosai.go.jp/record/6894/files/R89-5.pdf"}, "version_id": "4e11aa0a-3601-41d9-9be9-7bd9012ebe97"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "Fukutoku-Oka-no-Ba, Drift pumice, Petrological characteristics, Geochemical characteristics, San’in region", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "福徳岡ノ場，漂流軽石，岩石学的特徴，地球化学的特徴，山陰地方", "subitem_subject_language": "ja", "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": "A Drift Pumice from the 2021 Eruption of Fukutoku-Oka-no-Ba Found in Koura Beach, Shimane Prefecture, San’in Region", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "A Drift Pumice from the 2021 Eruption of Fukutoku-Oka-no-Ba Found in Koura Beach, Shimane Prefecture, San’in Region", "subitem_title_language": "en"}, {"subitem_title": "山陰地方島根県古浦海水浴場で発見された福徳岡ノ場2021年噴火由来の軽石", "subitem_title_language": "ja"}]}, "item_type_id": "10001", "owner": "10", "path": ["1713510153521"], "permalink_uri": "https://doi.org/10.24732/NIED.00006894", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2025-01-31"}, "publish_date": "2025-01-31", "publish_status": "0", "recid": "6894", "relation": {}, "relation_version_is_last": true, "title": ["A Drift Pumice from the 2021 Eruption of Fukutoku-Oka-no-Ba Found in Koura Beach, Shimane Prefecture, San’in Region"], "weko_shared_id": -1}