{"_buckets": {"deposit": "638c0ad5-36db-47fe-a489-75880cccfc6d"}, "_deposit": {"id": "5888", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "5888"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00005888", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2013", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "6", "bibliographicPageEnd": "621", "bibliographicPageStart": "609", "bibliographicVolumeNumber": "65", "bibliographic_titles": [{"bibliographic_title": "EARTH PLANETS AND SPACE", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "The physical condition of the 1 February, 2011, vulcanian explosion at Shinmoedake volcano, Japan, is estimated based on the size of impact craters created by ballistic ejecta, using a ballistic trajectory model and a scaling law for impact crater formation. The initial velocity, impact velocity and mass of ejecta were estimated at 240-290 m/s, 140 +/- 20 m/s and 1-3 ton, respectively. The gas mass fraction at the source was calculated to be 0.04-0.1, using the initial velocity and a theoretical model of vulcanian explosion. This gas mass fraction is higher than the petrologically estimated value for pre-eruptive magma. Low-angle jets from the explosion and the estimated depth and size of a pressurized gas region suggest a shallow source inside the lava dome. The observation and results imply that segregation and accumulation of gas in a shallow conduit played a role in an increase of excess pressure immediately below the dome surface, prior to the vulcanian explosion.", "subitem_description_language": "en", "subitem_description_type": "Other"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "TERRA SCIENTIFIC PUBL CO", "subitem_publisher_language": "en"}]}, "item_10001_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.5047/eps.2013.03.004"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "1343-8832", "subitem_source_identifier_type": "ISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Fukashi Maeno", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Setsuya Nakada", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Masashi Nagai", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Tomofumi Kozono", "creatorNameLang": "en"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_title": "Ballistic ejecta and eruption condition of the vulcanian explosion of Shinmoedake volcano, Kyushu, Japan on 1 February, 2011", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Ballistic ejecta and eruption condition of the vulcanian explosion of Shinmoedake volcano, Kyushu, Japan on 1 February, 2011", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/5888", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-05-24"}, "publish_date": "2023-05-24", "publish_status": "0", "recid": "5888", "relation": {}, "relation_version_is_last": true, "title": ["Ballistic ejecta and eruption condition of the vulcanian explosion of Shinmoedake volcano, Kyushu, Japan on 1 February, 2011"], "weko_shared_id": -1}