{"created":"2021-03-01T06:51:45.150004+00:00","id":33017,"links":{},"metadata":{"_buckets":{"deposit":"241fe993-d6ff-4c68-a487-9fd8ba9dd87e"},"_deposit":{"id":"33017","owner":"1","owners":[],"pid":{"revision_id":0,"type":"depid","value":"33017"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00033017","sets":["80:4535:4817:4821","9:504:4538:4819:4822"]},"author_link":["128727","128728","128729","128730","128723","128724","128725","128726"],"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"An Automatic Measurement of Arrival Time of Seismic Waves and Its Application to an On-line Processing System"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1982-01-08","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"484","bibliographicPageStart":"449","bibliographicVolumeNumber":"56","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":"In a number of cases, the time series of seismic wave data under study may be considered to be stationary in the wide sense, at least within certain time intervals. A computer based system has been developed for the automatic measurement of the arrival times of seismic signals. The parametric models of an autoregressive type are applied to the small sections of ground noise and seismic wave signals containing the P and S and unidentified X phases of microearthquakes. In measuring the arrival time of the P waves, autoregressive (AR) models are given for two separated sections, one for ground noise section before the P waves and the other for the section containing the P wave signals. According to the definition of the AR model, the prediction error calculated for the given model is represented by the normal distribution. Therefore, the maximum likelihood estimate associated with each of the two models provides an effective method for the measurement of the P arrival time. As a practical application of the method, the Akaike's Information Criterion (AIC) is introduced. An extensive application of the method for the measurement of the arrival times of S and unidentified phases has proved to give satisfactory results. Experiments using the on-line system linked with the telemetering notwork of microearthquake observation in the Kanto district show arrival time measurements almost exactly the same as those measured by experienced interpreters, giving the P arrival times within the error of ±0.01 sec for about 95% of the detected events for P and within the error of ±0.1 sec for 90% for S. The time required for the determination of arrival time for each chanel is about one second.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"128727","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Yokota, Takashi"}]},{"nameIdentifiers":[{"nameIdentifier":"128728","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Zhou, Shengkui"}]},{"nameIdentifiers":[{"nameIdentifier":"128729","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Mizoue, Megumi"}]},{"nameIdentifiers":[{"nameIdentifier":"128730","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Nakamura, Isao"}]}]},"item_4_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15083/0000033017","subitem_identifier_reg_type":"JaLC"}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京大学地震研究所"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00162258","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00408972","subitem_source_identifier_type":"ISSN"}]},"item_4_subject_15":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"453","subitem_subject_scheme":"NDC"}]},"item_4_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"Earthquake Research Institute, University of 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":"横田, 崇"}],"nameIdentifiers":[{"nameIdentifier":"128723","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"周, 勝奎"}],"nameIdentifiers":[{"nameIdentifier":"128724","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"溝上, 恵"}],"nameIdentifiers":[{"nameIdentifier":"128725","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中村, 功"}],"nameIdentifiers":[{"nameIdentifier":"128726","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":"ji0563003.pdf","filesize":[{"value":"1.8 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"ji0563003.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/33017/files/ji0563003.pdf"},"version_id":"61c86e11-b6db-462a-b064-4a0a6cf0f895"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"地震波データの自動検側方式とオンライン処理システムにおける稼動実験","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"地震波データの自動検側方式とオンライン処理システムにおける稼動実験","subitem_title_language":"ja"}]},"item_type_id":"4","owner":"1","path":["4821","4822"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2008-05-30"},"publish_date":"2008-05-30","publish_status":"0","recid":"33017","relation_version_is_last":true,"title":["地震波データの自動検側方式とオンライン処理システムにおける稼動実験"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-12-19T04:08:53.041184+00:00"}