{"created":"2021-03-01T06:53:54.247199+00:00","id":34948,"links":{},"metadata":{"_buckets":{"deposit":"738e5f80-110a-4a89-bf30-bc7e2eacc61f"},"_deposit":{"id":"34948","owner":"1","owners":[],"pid":{"revision_id":0,"type":"depid","value":"34948"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00034948","sets":["80:4535:5247:5253","9:504:4538:5249:5254"]},"author_link":["134915","134914"],"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"海底に傳はる地震波に就て"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1931-06-22","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"143","bibliographicPageStart":"115","bibliographicVolumeNumber":"9","bibliographic_titles":[{"bibliographic_title":"東京帝國大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, Tokyo Imperial University"}]}]},"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":"We may now complete this paper with a brief summary. 1. The viscosity of water gives no influence upon the transmission of Rayleigh-type waves on the bottom surface of an ocean. 2. The compressibility of water is effective only on the movement of the superposed water, but not on the motion of the ground. 3. The pressure of the water in the sense of forming surface water waves is of a great importance in connection with the transmission of the seismic waves. 4. The velocity of harmonic waves changes with the wave length, and this velocity is quick or slow according as the wave length is long or short. There is no definite critical velocity for harmonic waves of an infinite extent. 5. In a two-dimensional, transmission of waves, the azimuthal component of the displacements of the solid as well as of the water becomes quiescent as the distance from the epicentre is increased. 6. For long waves, the ratio of the horizontal component of the displacement to the vertical component is larger than that of the ordinary Rayleigh-waves, while this ratio is smaller than that of the latter for short waves. 7. The motion of the water particle is mainly of a vertical type. 8. However concentrated the original disturbance may be, the transmitted waves are of a dispersed form. As the distance from the epicentre is increased, this tendency becomes more distinct. 9. The dispersed waves are apparently of an oscillatory type, having a tail with gradually decreasing periods and amplitudes. 10. The leading part of the dispersed waves is propagated with the velocity of the ordinary Rayleigh-waves. 11. The phase of the leading part changes as the waves proceed to a long distance. 12. The wave lengths of the oscillatory part become larger and larger and the forms of the waves are more and more flattened in the course of the progression of the disturbance. 13. The disturbed portion has various group velocities depending upon the harmonic elements involved in that portion. The maximum of the group velocities is the same as that of Rayleigh-waves, and this maximum velocity corresponds with the harmonic element of an infinitely long wave length. 14. The phase velocity is also variable for different parts of the disturbed waves. 15. When the effects of gravity and of water are omitted, the transmitted waves due to a concentrated disturbance is of a gradually subsiding type without oscillation. In conclusion I must express my sincerest thank to Dr. G. Nishimura who has assisted me in preparing this paper. All of the numerical calculations, of which the result is shown in Figs. 1-13, have, indeed, been carried out by him in his accomplished mathematical ability.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"134915","nameIdentifierScheme":"WEKO"}],"names":[{"name":"妹澤, 克惟"}]}]},"item_4_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15083/0000034948","subitem_identifier_reg_type":"JaLC"}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京帝国大学地震研究所"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00029699","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, Tokyo Imperial University"}]},"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":"Sezawa, Katsutada"}],"nameIdentifiers":[{"nameIdentifier":"134914","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":"2017-06-27"}],"displaytype":"detail","filename":"ji0092001.pdf","filesize":[{"value":"1.0 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"ji0092001.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/34948/files/ji0092001.pdf"},"version_id":"523de976-41cc-48dd-9fad-97bbd88a2df4"}]},"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":"On the Transmission of Seismic Waves on the Bottom Surface of an Ocean","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"On the Transmission of Seismic Waves on the Bottom Surface of an Ocean","subitem_title_language":"en"}]},"item_type_id":"4","owner":"1","path":["5253","5254"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2008-06-06"},"publish_date":"2008-06-06","publish_status":"0","recid":"34948","relation_version_is_last":true,"title":["On the Transmission of Seismic Waves on the Bottom Surface of an Ocean"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-12-19T04:08:32.030478+00:00"}