{"created":"2021-03-01T06:52:31.067217+00:00","id":33706,"links":{},"metadata":{"_buckets":{"deposit":"ca211168-d959-45b0-9024-a72774f6b781"},"_deposit":{"id":"33706","owner":"1","owners":[],"pid":{"revision_id":0,"type":"depid","value":"33706"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00033706","sets":["80:4535:4967:4968","9:504:4538:4969:4970"]},"author_link":["131645","131646","131647","131648","131641","131642","131643","131644"],"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"海底地震系(その1)"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1963-12-28","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"824","bibliographicPageStart":"819","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":"日本附近は地震の多い所であるが,その大多数は震央が海にある.これらの震源の位置を決定するには,海中にも地震計が据えられると観測精度は著しく大きくなる.その他海底における地震波の伝播,海底の地殻構造,津波の発生および伝播などの研究に役に立つ.この試作した海底地震計は海深約200mの大陸棚の上を目標とし,海底に据附け上下動を観測し,観測を終えれば自動的に重錘をすて,浮いてくるようにした.今は実験中であるが,海底における地震計の部分について試験的に地震観測をしたので,そこまでの結果についてのべる.地震計の外側の容器は円筒形で直径39.5cm,高さ69.0cmで,重量は250kgであるが水中では166kgになる.換震器は上下動,周期0.1s,検流計は周期0.01s,感度15mm/mAである.トランジスターをつかつて2c/sで約71db増幅するが,記録紙と検流計の距離が30cmなので綜合倍率は10c/sで約1300である.記録は24×118cmのフィルムの上にとる.全消費電流は48mAで,蓄電池の容量が6V18Ahであるから約15日間連続観測できる.1963年4月27日から5月10日まで神奈川県三崎にある臨海実験所附近の深さ約15mの所で26の地震を記録した,その結果の一部をFig.10に示した.今はその時の記録の機械的の欠点をなおし3成分を記録する海底地震計を試作中である.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"131645","nameIdentifierScheme":"WEKO"}],"names":[{"name":"岸上, 冬彦"}]},{"nameIdentifiers":[{"nameIdentifier":"131646","nameIdentifierScheme":"WEKO"}],"names":[{"name":"山崎, 良雄"}]},{"nameIdentifiers":[{"nameIdentifier":"131647","nameIdentifierScheme":"WEKO"}],"names":[{"name":"小林, 平八郎"}]},{"nameIdentifiers":[{"nameIdentifier":"131648","nameIdentifierScheme":"WEKO"}],"names":[{"name":"是沢, 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Tokyo"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"地震研究所"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kishinouye, Fuyuhiko"}],"nameIdentifiers":[{"nameIdentifier":"131641","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamazaki, Yoshio"}],"nameIdentifiers":[{"nameIdentifier":"131642","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kobayashi, Hiehachiro"}],"nameIdentifiers":[{"nameIdentifier":"131643","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Koresawa, Sadayuki"}],"nameIdentifiers":[{"nameIdentifier":"131644","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":"ji0414009.pdf","filesize":[{"value":"733.9 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First Paper"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-12-19T05:09:42.966443+00:00"}