{"created":"2023-12-01T01:22:58.508318+00:00","id":2000073,"links":{},"metadata":{"_buckets":{"deposit":"da15179b-e540-4b7f-9981-a0ce2a2e4d90"},"_deposit":{"created_by":14,"id":"2000073","owners":[14],"pid":{"revision_id":0,"type":"depid","value":"2000073"},"status":"published"},"_oai":{"id":"oai:tokyo-metro-u.repo.nii.ac.jp:02000073","sets":["465:475:478:479:1701390537003"]},"author_link":[],"item_30002_bibliographic_information29":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2023-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"112","bibliographicPageStart":"97","bibliographicVolumeNumber":"49","bibliographic_titles":[{"bibliographic_title":"小笠原研究","bibliographic_titleLang":"ja"},{"bibliographic_title":"Ogasawara research","bibliographic_titleLang":"en"}]}]},"item_30002_creator2":{"attribute_name":"作成者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"野口, 侑要","creatorNameLang":"ja"},{"creatorName":"NOGUCHI, Yukiyasu","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"関森, 祐樹","creatorNameLang":"ja"},{"creatorName":"SEKIMORI, Yuki","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"巻, 俊宏","creatorNameLang":"ja"},{"creatorName":"MAKI, Toshihiro","creatorNameLang":"en"}]}]},"item_30002_description9":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"東京都小笠原諸島の無人の火山島である西之島は、2020年の大規模な噴火により陸上部分は溶岩や火山灰に覆われたことが明らかになっている一方、海中部分については調査が進んでおらず、溶岩や火山灰がどの程度まで広がっているか、また魚類や底生生物等がどのような状況になっているのか明らかでなかった。そこで、2021年7月、低コスト自律型海中ロボットシステムを用いて海中および海底の画像観測を実施した。強い潮流下での調査であったが、急峻な地形を含む海底の詳細な光学画像撮影に成功した。西之島北部の海底において火山灰が降り積もる平坦な地形が確認された。北東部の海底においては噴気が確認された。また、サメ等の大型魚から小型魚、タコ等の複数の遊泳生物が確認された。","subitem_description_language":"ja","subitem_description_type":"Abstract"},{"subitem_description":"Nishinoshima Island is an uninhabited volcanic island in the Ogasawara Islands of Tokyo. While it is clear that the terrestrial part of the island was covered with lava and volcanic ash due to a large-scale eruption in 2020, the underwater part had not been surveyed yet, and it was unclear how far the lava and volcanic ash have spread and what the situation is for fish and benthic organisms. In July 2021, underwater and seafloor observations were carried out using a low-cost autonomous underwater vehicle system. Despite the strong currents, we succeeded in taking detailed optical images of the seafloor, including the steep topography. Volcanic ash was deposited on the seafloor in the northern part of Nishinoshima Island, and flat topography was observed. In the northeastern part of the seafloor, the fume emission was observed. In addition, several kinds of nektons, from large fish such as sharks to small fish and an octopus, were captured on HATTORI’s camera.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_30002_file35":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2023-11-28"}],"displaytype":"detail","filename":"20001-049-005.pdf","format":"application/pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://tokyo-metro-u.repo.nii.ac.jp/record/2000073/files/20001-049-005.pdf"},"version_id":"9cfc5736-08d8-489e-85d7-8f0785a068f1"}]},"item_30002_language12":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_30002_publisher10":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京都立大学小笠原研究委員会","subitem_publisher_language":"ja"}]},"item_30002_resource_type13":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_30002_source_identifier22":{"attribute_name":"収録物識別子","attribute_value_mlt":[{"subitem_source_identifier":"03868176","subitem_source_identifier_type":"PISSN"},{"subitem_source_identifier":"AN00032332","subitem_source_identifier_type":"NCID"}]},"item_30002_subject8":{"attribute_name":"主題","attribute_value_mlt":[{"subitem_subject":"ASV(Autonomous Surface Vehicle)","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"AUV(Autonomous Underwater Vehicle)","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"画像観測","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"噴気","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"Fume","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Image observation","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_30002_title0":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"自律型海中ロボットシステムによる西之島海底調査","subitem_title_language":"ja"},{"subitem_title":"Seafloor survey of Nishinoshima Island using an Autonomous Underwater Vehicle","subitem_title_language":"en"}]},"item_30002_version_type15":{"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_title":"自律型海中ロボットシステムによる西之島海底調査","item_type_id":"30002","owner":"14","path":["1701390537003"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-11-28"},"publish_date":"2023-11-28","publish_status":"0","recid":"2000073","relation_version_is_last":true,"title":["自律型海中ロボットシステムによる西之島海底調査"],"weko_creator_id":"14","weko_shared_id":-1},"updated":"2023-12-11T02:53:41.735487+00:00"}