{"created":"2021-03-01T07:13:04.426877+00:00","id":51813,"links":{},"metadata":{"_buckets":{"deposit":"4cd88402-6d04-416c-a127-c140c56097ae"},"_deposit":{"id":"51813","owner":"1","owners":[],"pid":{"revision_id":0,"type":"depid","value":"51813"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00051813","sets":["80:4535:7677:8086","9:504:4538:7675:8085"]},"author_link":["154975","154976","154977","154972","154973","154974"],"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Diagnosis of Conduit State of Sakurajima Volcano Using Continuous Records on Gravity and Crustal Movements (Special Issue: “Possible Effect of Mega Earthquake on Long-term Volcanic Activity” Part 2)"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2017","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2-4","bibliographicPageEnd":"99","bibliographicPageStart":"91","bibliographicVolumeNumber":"92","bibliographic_titles":[{"bibliographic_title":"東京大学地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo"}]}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Sakurajima is one of the most active volcanoes in the world; 500 to 1,000 explosions have occurred every year since 2009. In particular, significant seismicity (>800 volcano-tectonic earthquakes in 15 hours) and crustal deformations (>10 cm displacement) were observed on Aug. 15, 2015, followed by an unusually long quiescent period since October 2015. The event is attributed to a dyke intrusion (tensile dislocation accompanied by magma injection) beneath the volcano. We compare gravity change Δg(t) with strain and tilt records ε(t) and find two remarkable aspects: (i) ratio |Δg(t)/ ε(t)| during dyke intrusion (Aug. 15, 2015) is 20 times smaller than that during the other explosion period; and, (ii) time lag between Δg(t) and ε(t) is negligibly small during dyke intrusion, while it is Δg(t) during the other period, exhibiting a significant time lag (～1 day) to ε(t). These characteristics are explained well from the viewpoint of whether the conduit is open to the free surface or is blocked. ","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"154975","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Okubo, Shuhei"}]},{"nameIdentifiers":[{"nameIdentifier":"154976","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Yamamoto, Keigo"}]},{"nameIdentifiers":[{"nameIdentifier":"154977","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Iguchi, Masato"}]}]},"item_4_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15083/0000051813","subitem_identifier_reg_type":"JaLC"}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京大学地震研究所"}]},"item_4_select_14":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00162258","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00408972","subitem_source_identifier_type":"ISSN"}]},"item_4_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"Earthquake Research Institute, University of Tokyo"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学地震研究所"},{"subitem_text_value":"京都大学防災研究所"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"大久保, 修平"}],"nameIdentifiers":[{"nameIdentifier":"154972","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山本, 圭吾"}],"nameIdentifiers":[{"nameIdentifier":"154973","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"井口, 正人"}],"nameIdentifiers":[{"nameIdentifier":"154974","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":"2019-05-07"}],"displaytype":"detail","filename":"IHO922405.pdf","filesize":[{"value":"2.2MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"IHO922405.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/51813/files/IHO922405.pdf"},"version_id":"94a0953c-72a4-4681-b6b0-cc07f45e36cb"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Sakurajima volcano","subitem_subject_scheme":"Other"},{"subitem_subject":"open conduit","subitem_subject_scheme":"Other"},{"subitem_subject":"gravity change","subitem_subject_scheme":"Other"},{"subitem_subject":"crustal movements","subitem_subject_scheme":"Other"},{"subitem_subject":"response function","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":"重力と地殻変動連続観測に基づく桜島火山の火道状態の診断  (特集:「巨大地震と火山活動」Part 2)","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"重力と地殻変動連続観測に基づく桜島火山の火道状態の診断  (特集:「巨大地震と火山活動」Part 2)","subitem_title_language":"ja"}]},"item_type_id":"4","owner":"1","path":["8086","8085"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2019-05-07"},"publish_date":"2019-05-07","publish_status":"0","recid":"51813","relation_version_is_last":true,"title":["重力と地殻変動連続観測に基づく桜島火山の火道状態の診断  (特集:「巨大地震と火山活動」Part 2)"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-12-19T05:37:58.167493+00:00"}