{"created":"2021-03-01T06:52:31.803714+00:00","id":33717,"links":{},"metadata":{"_buckets":{"deposit":"357f94a0-7054-4e9f-a1ae-928239e21ab3"},"_deposit":{"id":"33717","owner":"1","owners":[],"pid":{"revision_id":0,"type":"depid","value":"33717"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00033717","sets":["80:4535:4967:4971","9:504:4538:4969:4972"]},"author_link":["131676","131677","131678","131679","131672","131673","131674","131675"],"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"微小地震観測によつて見出された前震,余震および群発地震"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1963-09-30","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"680","bibliographicPageStart":"659","bibliographicVolumeNumber":"41","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":"昭和38年2月9日,上高地付近に小区域地震(気象庁発行の地震速報によればM=5.8)が起こつた.たまたま震央より約20kmの距離にある黒部第四ダムにおいて,HES 1-0.2(最高倍率50,000倍)による観測が行なわれていたので,6倍の前震,多数の余震がに測された.余震は20日頃,一応おさまつたかに見えたが,2月末から同じ地域に再び微小地震が頻発しはじめ,3月1日には1日間の発生回数が211以上に達した.マグニチュードは,本震を除いて,すべて3.5以下で典型的な微小地震群である.これらの地震群について調査を行なつたが,従来知られている,もっと大きな余震群や群発地震と比べて,ただ大きさを異にするだけで,ほぼ同じ発生様式を示していることが判つた.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"131676","nameIdentifierScheme":"WEKO"}],"names":[{"name":"萩原, 尊礼"}]},{"nameIdentifiers":[{"nameIdentifier":"131677","nameIdentifierScheme":"WEKO"}],"names":[{"name":"唐鎌, 郁夫"}]},{"nameIdentifiers":[{"nameIdentifier":"131678","nameIdentifierScheme":"WEKO"}],"names":[{"name":"茅野, 一郎"}]},{"nameIdentifiers":[{"nameIdentifier":"131679","nameIdentifierScheme":"WEKO"}],"names":[{"name":"神沼, 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