{"created":"2021-03-01T06:51:24.175279+00:00","id":32703,"links":{},"metadata":{"_buckets":{"deposit":"6a89d79b-965c-4637-90bb-51c695fadbc8"},"_deposit":{"id":"32703","owner":"1","owners":[],"pid":{"revision_id":0,"type":"depid","value":"32703"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00032703","sets":["80:4535:4691:4692","9:504:4538:4693:4694"]},"author_link":["126950","126951","126948","126949"],"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Three-Dimensional P-Wave Velocity Structure of Kirishima Volcanoes Using Regional Seismic Events"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1995-03-31","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"289","bibliographicPageStart":"267","bibliographicVolumeNumber":"69","bibliographic_titles":[{"bibliographic_title":"東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo"}]}]},"item_4_description_13":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"霧島火山の下のマグマシステムを探査することを主たる目的として,3次元P波速度構造解析を行なった.用いた観測点は霧島火山観測所(KVO)が展開している定常観測点16点および臨時観測点2点の計18点である.1989年5月から1992年12月の間にこれらの観測点で観測されたやや遠地地震83個から1255個のP波初動データを読み取り解析に用いた.インバージョンの結果,霧島火山直下の火山列に沿った深さ約10kmのところに低速度異常域が決定された.この深さの標準的なP波速度を6.0km/sと仮定すると,この低速度異常は15%の速度減少に相当する.霧島火山で行なわれた電磁気探査では,火山直下やはり地下約10kmのところに低抵抗層が見つかっている.以上もふまえると上記の低速度異常はマグマの活動に関連したものであると考えられる.","subitem_description_type":"Abstract"},{"subitem_description":"The three-dimensional P-wave velocity structure of Kirishima volcanoes is determined mainly to understand the magmatic system beneath these volcanoes. 16 permanent and 2 temporal seismic stations operated by Kirishima Volcano Observatory(KVO) are used. 1255 P-wave arrival time data are obtained from 83 regional seismic events for the period from May, 1989 to December, 1992.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"126950","nameIdentifierScheme":"WEKO"}],"names":[{"name":"YAMAMOTO, Keigo"}]},{"nameIdentifiers":[{"nameIdentifier":"126951","nameIdentifierScheme":"WEKO"}],"names":[{"name":"IDA, 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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"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"山本, 圭吾"}],"nameIdentifiers":[{"nameIdentifier":"126948","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"井田, 喜明"}],"nameIdentifiers":[{"nameIdentifier":"126949","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":"2017-06-26"}],"displaytype":"detail","filename":"ji0694006.pdf","filesize":[{"value":"1.7 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