{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1050298079315506432.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"HDL","@value":"http://hdl.handle.net/10458/0002000285"}},{"identifier":{"@type":"URI","@value":"https://miyazaki-u.repo.nii.ac.jp/records/2000285"}}],"resourceType":"紀要論文(departmental bulletin paper)","dc:title":[{"@language":"en","@value":"Development of Borehole Seismometer Using Conical Pendulum to Three-Component Velocity Measurement"},{"@language":"ja","@value":"円錐振り子を利用した3 成分速度型ボアホール地震計の開発"}],"dc:language":"ja","description":[{"type":"Abstract","notation":[{"@language":"en","@value":"The aim of this study is to develop a small, inexpensive borehole seismometer that can accurately measure the shot-period velocity signal of three directions. The prototype developed in prior research is composed of a biaxial horizontal electromagnetic sensor in conical pendulum form and a vertical electromagnetic sensor installed on the pendulum axis. The performance of the prototype has been verified experimentally, however, the accuracy of the measurement became degraded due to the elastic vibration and residual vibration of the pendulum axis. As a countermeasure for this problem, the prototype has been improved such as increasing the rigidity of the pendulum axis and adding a magnetic attenuation. In the paper, the performance of the improved prototype was evaluated based on the verification experiment results."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1070298079315506433","@type":"Researcher","foaf:name":[{"@language":"ja","@value":"上岡, 野歩"},{"@language":"ja-Kana","@value":"ウエオカ, ノボ"},{"@language":"en","@value":"Ueoka, Nobo"}]},{"@id":"https://cir.nii.ac.jp/crid/1070298079315506438","@type":"Researcher","foaf:name":[{"@language":"ja","@value":"濵畑, 貴之"},{"@language":"ja-Kana","@value":"ハマハタ, タカユキ"},{"@language":"en","@value":"Hamahata, Takayuki"}]},{"@id":"https://cir.nii.ac.jp/crid/1420564276182767744","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"20336291"},{"@type":"NRID","@value":"1000020336291"},{"@type":"NRID","@value":"9000413239122"},{"@type":"NRID","@value":"9000002234087"},{"@type":"NRID","@value":"9000413238757"},{"@type":"NRID","@value":"9000413238760"},{"@type":"NRID","@value":"9000413238423"},{"@type":"NRID","@value":"9000413239188"},{"@type":"NRID","@value":"9000413239181"},{"@type":"NRID","@value":"9000413238746"}],"foaf:name":[{"@language":"ja","@value":"境, 健太郎"},{"@language":"ja-Kana","@value":"サカイ, ケンタロウ"},{"@language":"en","@value":"Sakai, Kentaro"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"宮崎大学"},{"@language":"en","@value":"University of Miyazaki"}]},{"@id":"https://cir.nii.ac.jp/crid/1420845751167343872","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"90433094"},{"@type":"NRID","@value":"1000090433094"}],"foaf:name":[{"@language":"ja","@value":"中野, 敦"},{"@language":"ja-Kana","@value":"ナカノ, アツシ"},{"@language":"en","@value":"Nakano, Atsushi"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"宮崎大学"},{"@language":"en","@value":"University of Miyazaki"}]},{"@id":"https://cir.nii.ac.jp/crid/1070298079315506437","@type":"Researcher","foaf:name":[{"@language":"ja","@value":"寺薗, 信一"},{"@language":"ja-Kana","@value":"テラゾノ, シンイチ"},{"@language":"en","@value":"Terazono, Shinichi"}]},{"@id":"https://cir.nii.ac.jp/crid/1070298079315506436","@type":"Researcher","foaf:name":[{"@language":"ja","@value":"吉松, 爽杜"},{"@language":"ja-Kana","@value":"ヨシマツ, アキト"},{"@language":"en","@value":"Yoshimatsu, Akito"}]},{"@id":"https://cir.nii.ac.jp/crid/1420282801204832128","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"10294886"},{"@type":"NRID","@value":"1000010294886"},{"@type":"NRID","@value":"9000020173340"},{"@type":"NRID","@value":"9000386208007"},{"@type":"NRID","@value":"9000392158339"},{"@type":"NRID","@value":"9000240088317"},{"@type":"NRID","@value":"9000403990969"},{"@type":"NRID","@value":"9000402073541"},{"@type":"NRID","@value":"9000396163236"},{"@type":"NRID","@value":"9000021667181"},{"@type":"NRID","@value":"9000020130262"},{"@type":"NRID","@value":"9000256276176"},{"@type":"NRID","@value":"9000256282043"},{"@type":"NRID","@value":"9000386212785"},{"@type":"NRID","@value":"9000021561345"},{"@type":"NRID","@value":"9000255782100"},{"@type":"NRID","@value":"9000256278508"},{"@type":"NRID","@value":"9000256283092"},{"@type":"NRID","@value":"9000242082194"},{"@type":"NRID","@value":"9000386207983"},{"@type":"NRID","@value":"9000021756230"},{"@type":"NRID","@value":"9000386207680"},{"@type":"NRID","@value":"9000256279946"},{"@type":"NRID","@value":"9000256282040"},{"@type":"NRID","@value":"9000021705755"},{"@type":"NRID","@value":"9000392158784"},{"@type":"NRID","@value":"9000392428743"},{"@type":"NRID","@value":"9000255782102"},{"@type":"NRID","@value":"9000402073495"},{"@type":"NRID","@value":"9000392158798"},{"@type":"NRID","@value":"9000413236985"},{"@type":"NRID","@value":"9000402073668"},{"@type":"NRID","@value":"9000021692889"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0189110"}],"foaf:name":[{"@language":"ja","@value":"盆子原, 康博"},{"@language":"ja-Kana","@value":"ボンコバラ, ヤスヒロ"},{"@language":"en","@value":"Bonkobara, Yasuhiro"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"宮崎大学"},{"@language":"en","@value":"University of Miyazaki"}]}],"publication":{"publicationIdentifier":[{"@type":"ISSN","@value":"05404924"},{"@type":"NCID","@value":"AA00732558"}],"prism:publicationName":[{"@language":"ja","@value":"宮崎大学工学部紀要"},{"@language":"en","@value":"Memoirs of Faculty of Engineering, University of Miyazaki"}],"dc:publisher":[{"@value":"宮崎大学工学部"},{"@value":"Faculty of Engineering, University of Miyazaki"}],"prism:publicationDate":"2023-10-27","prism:volume":"52","prism:startingPage":"65","prism:endingPage":"69"},"url":[{"@id":"https://miyazaki-u.repo.nii.ac.jp/records/2000285"}],"foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Mechanism","dc:title":"Mechanism"},{"@id":"https://cir.nii.ac.jp/all?q=Seismic%20system","dc:title":"Seismic system"},{"@id":"https://cir.nii.ac.jp/all?q=Seismometer","dc:title":"Seismometer"},{"@id":"https://cir.nii.ac.jp/all?q=Halbach%20magnet%20array","dc:title":"Halbach magnet array"},{"@id":"https://cir.nii.ac.jp/all?q=Nonlinear%20spring","dc:title":"Nonlinear spring"}],"dcterms:subject":[{"subjectScheme":"Other","notation":[{"@language":"en","@value":"Mechanism"}]},{"subjectScheme":"Other","notation":[{"@language":"en","@value":"Seismic system"}]},{"subjectScheme":"Other","notation":[{"@language":"en","@value":"Seismometer"}]},{"subjectScheme":"Other","notation":[{"@language":"en","@value":"Halbach magnet array"}]},{"subjectScheme":"Other","notation":[{"@language":"en","@value":"Nonlinear spring"}]}],"dataSourceIdentifier":[{"@type":"IRDB","@value":"oai:irdb.nii.ac.jp:00851:0005951215"}]}