{"created":"2023-07-25T08:09:43.993655+00:00","id":9376,"links":{},"metadata":{"_buckets":{"deposit":"53a3506b-86e9-4a34-8531-dc9981396ebf"},"_deposit":{"created_by":18,"id":"9376","owners":[18],"pid":{"revision_id":0,"type":"depid","value":"9376"},"status":"published"},"_oai":{"id":"oai:ir.kagoshima-u.ac.jp:00009376","sets":["228:265:5432","43:194:6019"]},"author_link":["659","2433","7853"],"item_7_biblio_info_5":{"attribute_name":"収録雑誌名","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1997-11-21","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"20","bibliographicPageStart":"9","bibliographicVolumeNumber":"25","bibliographic_titles":[{"bibliographic_title":"鹿児島大学農学部演習林研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Research bulletin of the Kagoshima University forests","bibliographic_titleLang":"en"}]}]},"item_7_date_6":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"1997-11-21","subitem_date_issued_type":"Issued"}]},"item_7_description_4":{"attribute_name":"要約(Abstract)","attribute_value_mlt":[{"subitem_description":"桜島は1955年以来活発な火山活動を続けており, 山体頂部は火山灰や火山ガスにより植生が後退し, 非常に荒廃した状態にある。新旧の火山噴出物からなる山体は侵食されやすく, 降雨時には土石流・出水により多量の土砂が流出して いる。著者らは桜島で発生している土石流・出水の特性を明らかにするとともに, それらによる流出土砂量を予測する ために, 北岳山体の西道川と南岳山体の有村川において土石流・出水の観測を開始した。観測システムは, 超音波式水位計による土石流・出水の水位観測, ビデオカメラによる動態観測, 転倒ます型雨量計による雨量観測からなる。本論では, 1991～1996年に得られた観測結果に基づき, 西道川および有村川の流出特性, 流出土砂量について検討する。得られた結果をまとめると次のようである。(1) 西道川と有村川における土石流・出水の流出時間は, 西道川1.4～16.6時間, 有村川0.2～6.6時間であり, 西道川は有村川に比べて流出時間が長い。ピーク流量は降雨条件が同程度でも西道川より有村川で大きく, その平均値は西道川9.2m^3/s, 有村川20.6m^3/sであった。一方, 総流出量は有村川より西道川で大きく, その平均値は西道川34,868m^3,有村川19,972m^3であった。これらは, 地形, 地質・地層構造, 地表面の状態, 侵食状況などの違いに関係している。(2) 西道川水位観測地点において出水のサンプルを採取し, その土砂濃度を測定した。その結果によれば, この場合の土砂濃度は流量の変化とよく対応し, 両者の関係は両対数方眼紙上で直線で表された。(3) 土砂濃度一流量曲線が, 1993,1996年の土石流・出水に適用されるものとして, 土砂流量のハイドログラフを求め, 個々の土石流・出水の流出土砂量を算出した。1993,1996年の4年間の比流出土砂量の平均値を求めると, 西道川流域16,344rピ/k丘, 有村川流域20,363rゴ/kdとなり, 比流出土砂量は西道川より有村川で大きい。(4) 土石流・出水による総流出量の合計から土砂流出量を差し引き, 雨水流出量を求めた。年流出率(年降水量に対する雨水流出量の比)は, 西道川は11～27%の範囲で平均約16%, 有村川は西道川より小さく3～8%の範囲で平均約6%であった。","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_7_publisher_23":{"attribute_name":"公開者・出版者","attribute_value_mlt":[{"subitem_publisher":"鹿児島大学","subitem_publisher_language":"ja"},{"subitem_publisher":"Kagoshima University","subitem_publisher_language":"en"}]},"item_7_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"13449362","subitem_source_identifier_type":"PISSN"}]},"item_7_source_id_9":{"attribute_name":"NII書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AN10592752","subitem_source_identifier_type":"NCID"}]},"item_7_subject_15":{"attribute_name":"NDC","attribute_value_mlt":[{"subitem_subject":"650","subitem_subject_scheme":"NDC"}]},"item_7_subject_20":{"attribute_name":"NIIsubject","attribute_value_mlt":[{"subitem_subject":"林学","subitem_subject_language":"ja","subitem_subject_scheme":"Other"}]},"item_7_version_type_14":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"地頭薗, 隆","creatorNameLang":"ja"},{"creatorName":"ジトウソノ, タカシ","creatorNameLang":"ja-Kana"},{"creatorName":"JITOUSONO, Takashi","creatorNameLang":"en"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"下川, 悦郎","creatorNameLang":"ja"},{"creatorName":"シモカワ, エツロウ","creatorNameLang":"ja-Kana"},{"creatorName":"SHIMOKAWA, Etsuro","creatorNameLang":"en"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"寺本, 行芳","creatorNameLang":"ja"},{"creatorName":"テラモト, ユキヨシ","creatorNameLang":"ja-Kana"},{"creatorName":"TERAMOTO, Yukiyoshi","creatorNameLang":"en"}],"nameIdentifiers":[{},{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-10-28"}],"displaytype":"detail","filename":"KJ00000206360.pdf","filesize":[{"value":"1.5 MB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"label":"KJ00000206360.pdf","objectType":"fulltext","url":"https://ir.kagoshima-u.ac.jp/record/9376/files/KJ00000206360.pdf"},"version_id":"29d77afb-23bc-400e-8d2a-acc0b1c8be39"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"桜島","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"土石流","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"出水","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"流出特性","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"流出土砂量","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"Mt. Sakurajima","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Debris flow","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Flood","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Runoff characteristics","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Sediment runoff","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"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":"桜島における土石流河川の流出特性","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"桜島における土石流河川の流出特性","subitem_title_language":"ja"},{"subitem_title":"Runoff Characteristics of Debris Flows and Floods Surrounding Mt. Sakurajima.","subitem_title_language":"en"}]},"item_type_id":"7","owner":"18","path":["5432","6019"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2015-04-20"},"publish_date":"2015-04-20","publish_status":"0","recid":"9376","relation_version_is_last":true,"title":["桜島における土石流河川の流出特性"],"weko_creator_id":"18","weko_shared_id":-1},"updated":"2024-05-02T07:47:20.112633+00:00"}