{"created":"2025-04-11T01:18:52.760284+00:00","id":2040328,"links":{},"metadata":{"_buckets":{"deposit":"fdaba84c-ebd0-40d6-841d-292bfae014b0"},"_deposit":{"created_by":79,"id":"2040328","owner":"79","owners":[79],"pid":{"revision_id":0,"type":"depid","value":"2040328"},"status":"published"},"_oai":{"id":"oai:hiroshima.repo.nii.ac.jp:02040328","sets":["1727147343679:1730444366117:1744174638029"]},"author_link":[],"control_number":"2040328","item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_title":"広島県太田川下流氾濫原における微地形発達 : 自然堤防の形成時期と成因を中心に","subitem_title_language":"ja"},{"subitem_title":"Microtopographic Development in the Lower Ota River Floodplain, Hiroshima Prefecture: Focusing on the Timing and Factor of Formation of Natural Levees","subitem_title_language":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"森, 俊輔","creatorNameLang":"ja"},{"creatorName":"MORI, Shunsuke","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"熊原, 康博","creatorNameLang":"ja"},{"creatorName":"KUMAHARA, Yasuhiro","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"久保, 純子","creatorNameLang":"ja"},{"creatorName":"KUBO, Sumiko","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"貞方, 昇","creatorNameLang":"ja"},{"creatorName":"SADAKATA, Noboru","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"竹本, 仁美","creatorNameLang":"ja"},{"creatorName":"TAKEMOTO, Hitomi","creatorNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186499011":{"attribute_name":"Rights","attribute_value_mlt":[{"subitem_rights":"Copyright (c) 2024 広島大学総合博物館 Hiroshima University Museum","subitem_rights_language":"en"}]},"item_1617186609386":{"attribute_name":"Subject","attribute_value_mlt":[{"subitem_subject":"太田川","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"氾濫原","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"自然堤防","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"ボーリング調査","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"ハンドオーガー調査","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"微地形発達","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"Ota River","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"floodplain","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"natural levee","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"boring survey","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"hand auger survey","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"microtopography development","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"本研究では，広島県太田川下流氾濫原について，地形学的手法と堆積学的手法を組み合わせて，これまで明らかになっていない氾濫原の発達過程，特に自然堤防の形成時期と成因を検討した。本地域では，3 世紀以降と17世紀以降に堆積速度が速まり，氾濫原の各所で自然堤防/ 後背湿地が形成されるようになった。自然堤防/ 後背湿地を形成し始めた時期の太田川は，現在の安川が流れている氾濫原西部の祇園付近を流れていた。その後7 世紀初めごろにこの河道からの転流が起こった。中世初めごろに転流が起こり，再度この地域を流れるようになった。その後，現在にかけて，太田川は現在の古川の位置，現在の本流の位置へと変化した。中世には花崗岩類由来の堆積物の割合が増加しており、上流での砂鉄採取が下流の微地形形成に影響を及ぼした可能性が示唆された。","subitem_description_language":"ja","subitem_description_type":"Abstract"},{"subitem_description":"In this study, we examined the floodplain development on the lower reaches of the Ota River floodplain, Hiroshima Prefecture, especially the timing and the factor of natural levee, which have not been clarified so far, using a combination of geomorphological and sedimentological techniques. In this area, the sedimentation rate increased after 3rd century, especially after 17th century, and natural levee/back marsh was formed in various parts of the floodplain. When the natural levee/back marsh began to form, the Ota River flowed near Gion in its western part, where the Yasukawa River flows today. The river was diverted from this channel around the beginning of the 7th century, and then flowed through this area again around the beginning of the Middle Ages. From then to the present, the Ota River changed its course to the location of the present Furukawa River, and the present mainstream, in that order. The proportion of granitic-derived sediments increased during the Middle Ages, suggesting that upstream iron sand mining may have influenced the formation of the floodplain microtopography.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_publisher":"広島大学総合博物館","subitem_publisher_language":"ja"},{"subitem_publisher":"Hiroshima University Museum","subitem_publisher_language":"en"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_1617186819068":{"attribute_name":"Identifier Registration","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15027/0002040328","subitem_identifier_reg_type":"JaLC"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_source_identifier":"1884-4243","subitem_source_identifier_type":"ISSN"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2024-12-25","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"16","bibliographicNumberOfPages":"10","bibliographicPageEnd":"24","bibliographicPageStart":"15","bibliographic_titles":[{"bibliographic_title":"広島大学総合博物館研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Bulletin of the Hiroshima University Museum","bibliographic_titleLang":"en"}]}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2025-04-15"}],"filename":"BullHiroshimaUnivMuseum_16_15.pdf","filesize":[{"value":"2.9 MB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://hiroshima.repo.nii.ac.jp/record/2040328/files/BullHiroshimaUnivMuseum_16_15.pdf"},"version_id":"33b53f86-ca6a-4a15-a153-2b7bebd4cbbc"}]},"item_1617620223087":{"attribute_name":"Heading","attribute_value_mlt":[{"subitem_heading_banner_headline":"短報","subitem_heading_language":"ja"},{"subitem_heading_banner_headline":"Short Report","subitem_heading_language":"en"}]},"item_title":"広島県太田川下流氾濫原における微地形発達 : 自然堤防の形成時期と成因を中心に","item_type_id":"40036","owner":"79","path":["1744174638029"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2025-04-15"},"publish_date":"2025-04-15","publish_status":"0","recid":"2040328","relation_version_is_last":true,"title":["広島県太田川下流氾濫原における微地形発達 : 自然堤防の形成時期と成因を中心に"],"weko_creator_id":"79","weko_shared_id":-1},"updated":"2025-04-22T01:36:16.932026+00:00"}