{"created":"2021-03-01T07:07:23.555933+00:00","id":28951,"links":{},"metadata":{"_buckets":{"deposit":"2acd9e60-863d-4510-aab6-5ed65e205f22"},"_deposit":{"id":"28951","owners":[],"pid":{"revision_id":0,"type":"depid","value":"28951"},"status":"published"},"_oai":{"id":"oai:tsukuba.repo.nii.ac.jp:00028951","sets":["160:1960","160:2171","3:62:5592:2049"]},"item_5_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2013-04","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"238","bibliographicPageStart":"233","bibliographicVolumeNumber":"10","bibliographic_titles":[{"bibliographic_title":"Journal of mountain science"}]}]},"item_5_creator_3":{"attribute_name":"著者別名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"堀田, 紀文"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"西本, 晴男"}],"nameIdentifiers":[{}]}]},"item_5_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Debris flows include a great diversity of grain sizes with inherent features such as inverse grading, particle size segregation, and liquefaction of fine sediment. The liquefaction of fine sediment affects the fluidity of debris flows, although the behavior and influence of fine sediment in debris flows have not been examined sufficiently. This study used flume tests to detect the effect of fine sediment on the fluidity of laboratory debris flows consisting of particles with various diameters. From the experiments, the greatest sediment concentration and flow depth were observed in the debris flows mixed with fine sediment indicating increased flow resistance. The experimental friction coefficient was then compared with the theoretical friction coefficient derived by substituting the experimental values into the constitutive equations for debris flow. The theoretical friction coefficient was obtained from two models with different fine-sediment treatments: assuming that all of the fine sediments were solid particles or that the particles consisted of a fluid phase involving pore water liquefaction. From the comparison of the friction coefficients, a fully liquefaction state was detected for the fine particle mixture. When the mixing ratio and particle size of the fine sediment were different, some other cases were considered to be in a partially liquefied transition state. These results imply that the liquefaction of fine sediment in debris flows was induced not only by the geometric conditions such as particle sizes, but also by the flow conditions.","subitem_description_type":"Abstract"}]},"item_5_identifier_34":{"attribute_name":"URI","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/2241/119171"}]},"item_5_publisher_27":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Science Press"}]},"item_5_relation_11":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1007/s11629-013-2522-y","subitem_relation_type_select":"DOI"}}]},"item_5_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"© Science Press and Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2013　　　The original publication is available at www.springerlink.com"}]},"item_5_select_15":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"author"}]},"item_5_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1672-6316","subitem_source_identifier_type":"ISSN"}]},"item_5_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11957323","subitem_source_identifier_type":"NCID"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Hotta, Norifumi"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kaneko, Takahiro"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Iwata, Tomoyuki"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nishimoto, Haruo"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2013-12-25"}],"displaytype":"detail","filename":"JMS_10-2.pdf","filesize":[{"value":"196.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"JMS_10-2.pdf","url":"https://tsukuba.repo.nii.ac.jp/record/28951/files/JMS_10-2.pdf"},"version_id":"58e7d837-afd4-4c44-916c-323e17db47c7"}]},"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Influence of fine sediment on the fluidity of debris flows","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Influence of fine sediment on the fluidity of debris flows"}]},"item_type_id":"5","owner":"1","path":["2171","1960","2049"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-05-20"},"publish_date":"2013-05-20","publish_status":"0","recid":"28951","relation_version_is_last":true,"title":["Influence of fine sediment on the fluidity of debris flows"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-04-27T08:56:57.026975+00:00"}