{"created":"2023-03-30T09:22:42.596756+00:00","id":2987,"links":{},"metadata":{"_buckets":{"deposit":"531c41db-9a38-4c5c-bf0d-f504a2bc01a9"},"_deposit":{"id":"2987","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2987"},"status":"published"},"_oai":{"id":"oai:nied-repo.bosai.go.jp:00002987","sets":[]},"author_link":[],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2018-04","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageStart":"eaao0219","bibliographicVolumeNumber":"4","bibliographic_titles":[{"bibliographic_title":"Science Advances","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Tsunami earthquakes are a group of enigmatic earthquakes generating disproportionally large tsunamis relative to seismic magnitude. These events occur most typically near deep-sea trenches. Tsunami earthquakes occurring approximately every 10 years near Torishima on the Izu-Bonin arc are another example. Seismic and tsunami waves from the 2015 event [Mw (moment magnitude) = 5.7] were recorded by an offshore seafloor array of 10 pressure gauges, ~100 km away from the epicenter. We made an array analysis of dispersive tsunamis to locate the tsunami source within the submarine Smith Caldera. The tsunami simulation from a large caldera-floor uplift of ~1.5 m with a small peripheral depression yielded waveforms remarkably similar to the observations. The estimated central uplift, 1.5 m, is ~20 times larger than that inferred from the seismologically determined non-double-couple source. Thus, the tsunami observation is not compatible with the published seismic source model taken at face value. However, given the indeterminacy of Mzx, Mzy, and M{tensile} of a shallow moment tensor source, it may be possible to find a source mechanism with efficient tsunami but inefficient seismic radiation that can satisfactorily explain both the tsunami and seismic observations, but this question remains unresolved.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"American Association for the Advancement of Science ({AAAS})","subitem_publisher_language":"en"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1126/sciadv.aao0219"}}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yoshio Fukao","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Osamu Sandanbata","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Hiroko Sugioka","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Aki Ito","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Hajime Shiobara","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Shingo Watada","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kenji Satake","creatorNameLang":"en"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_title":"Mechanism of the 2015 volcanic tsunami earthquake near Torishima, Japan","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Mechanism of the 2015 volcanic tsunami earthquake near Torishima, Japan","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"1","path":["1670839190650"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-03-30"},"publish_date":"2023-03-30","publish_status":"0","recid":"2987","relation_version_is_last":true,"title":["Mechanism of the 2015 volcanic tsunami earthquake near Torishima, Japan"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-07T10:27:30.575547+00:00"}