{"created":"2021-03-01T06:52:17.016650+00:00","id":33496,"links":{},"metadata":{"_buckets":{"deposit":"2c02c599-e119-4c4a-aeb8-f624a36f8be9"},"_deposit":{"id":"33496","owner":"1","owners":[],"pid":{"revision_id":0,"type":"depid","value":"33496"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00033496","sets":["80:4535:4927:4933","9:504:4538:4929:4934"]},"author_link":["130837","130836"],"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"上部マントルおよび下部マントルにおけるP波の減衰"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1967-08-25","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"312","bibliographicPageStart":"299","bibliographicVolumeNumber":"45","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":"Difference of Q, specific quality factor, for P waves in the upper and the lower mantle is determined around the period of 1sec by the spectral analysis of P, PcP, pP and pPcP phases from nine after-shocks of the Alaska earthquake of March 28, 1964. The effects of crustal layerings are removed by Haskell's method. From relative spectral ratios P/PcP and pP/pPcP, the maximum of the average Q for P waves, Qα, is estimated as 800. The ratio of the average Q for the upper 870km of the mantle, Q'α, to that for the rest of the mantle, Q\"\"α, cannot be larger than 0.3. The probable range of Qα, Q'α, Q\"\"α and Q'α/Q\"\"α can be Determined as 410<Qα<630, 180<Q'α<240, 1600<Q\"\"α<6000, and 0.04<Q'α/Q\"\"α<0.12 respectively, when the previously determined relation between Qα and Qα/Qβ (Qβ; average Q for shear), and the range of the ratio 1.8≦Qα/Qβ≦2.5 suggested by surface wave studies are used.","subitem_description_type":"Abstract"},{"subitem_description":"1964年3月28日のアラスカ地震にともなう9個の余震のP, PcP, pP, pPcPのスペクトル解析を行なつて,周期1秒程度のP波に対するQの上部マントルと下部マントルでの相違を推定した.地殻の層構造のスペクトルにおよぼす影響はハスケルの方法によつてのぞいた. PとPcP,およびpPとpPcPの相対スペクトル比からマントル全体でのP波に対するQの平均, Qα,の最大値は800と推定される. 870kmより浅い部分のマントルについてのQの平均,Q'α,と870kmより深い部分のマントルについてのQが平均, Q\"\"α,の比, Q'α/Q\"\"α,はたかだか0.3である.今までに推定されているQαとQα/Qβ (Qβはマントル全体についてのS波のQの平均)の関係および,裏面波の減衰から推定される値1.8<Qα/Qβ<2.5を用いると, Qα, Q'α, Q\"\"α,および, Q'α/Q\"\"αの範囲はそれぞれ, 410<Qα<630, 180<Q'α<240, 1600<Q\"\"α<6000,および, 0.04<Q'α/ Q\"\"α<0.12と推定される.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"130837","nameIdentifierScheme":"WEKO"}],"names":[{"name":"金森, 博雄"}]}]},"item_4_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15083/0000033496","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_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kanamori, Hiroo"}],"nameIdentifiers":[{"nameIdentifier":"130836","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":"ji0452002.pdf","filesize":[{"value":"755.9 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"ji0452002.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/33496/files/ji0452002.pdf"},"version_id":"40121291-d104-4a7a-9287-a877003ba352"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"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":"Attenuation of P Waves in the Upper and Lower Mantle","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Attenuation of P Waves in the Upper and Lower Mantle","subitem_title_language":"en"}]},"item_type_id":"4","owner":"1","path":["4933","4934"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2008-05-30"},"publish_date":"2008-05-30","publish_status":"0","recid":"33496","relation_version_is_last":true,"title":["Attenuation of P Waves in the Upper and Lower Mantle"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-12-19T04:45:01.175006+00:00"}