{"_buckets": {"deposit": "e600c974-5f44-4b52-b3f4-5fd1ad965722"}, "_deposit": {"id": "5807", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "5807"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00005807", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2017", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "2", "bibliographicPageEnd": "126", "bibliographicPageStart": "119", "bibliographicVolumeNumber": "47", "bibliographic_titles": [{"bibliographic_title": "日本水文科学会誌", "bibliographic_titleLang": "ja"}, {"bibliographic_title": "Journal of Japanese Association of Hydrological Sciences", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "\u0026lt;p\u0026gt;積雪上にまとまった雨が降る現象はROS（rain-on-snow）イベントと呼ばれ，融雪洪水や全層雪崩，土砂崩れ，地すべりなどの要因となる。ROSイベントに関する研究は，2000年以降になって，世界各地の積雪地域でさかんに行われるようになった。ROSイベント時に雨が雪をとかす量は小さく，多くの場合，雪面への乱流熱輸送が主となって雪どけが進む。しかし，必ずしも乱流熱輸送だけが重要なのではなく，放射熱収支量や積雪底面への地中熱輸送が卓越する場合や，ROSイベントの規模に応じて主要な融雪熱収支成分が異なることもあり，降雨・気象・積雪条件さらには流域特性に応じて多様に異なる。さらに，降雨が積雪内をどのように浸透し積雪底面から流出するかについてもよく分かっていない。そのために模擬降雨散水実験がなされているが，平地か斜面か，積雪ブロックを切り出して散水するか自然のままで散水するかなど，実験方法に応じて様々な結果が得られている。北海道母子里で行われた120 mmの降雨を与えた実験では，積雪底面からevent waterが67%，pre-event waterが33%の割合で流出し，晴天日の融雪水の流出とは著しく異なることが分かった。\u0026lt;/p\u0026gt;", "subitem_description_language": "ja", "subitem_description_type": "Other"}, {"subitem_description": "\u0026lt;p\u0026gt;Rain-on-snow (ROS) events cause severe snowmelt hazards such as river flooding, snow avalanches, slope failure, landslides, etc. ROS event studies have been increasing since 2000. Snowmelt energy balance studies show that the amount of advective energy carried by rainfall is usually small, and substantial contributions are made by turbulent heat transfer. However, snow melting does not occur entirely due to turbulent transfers, as radiative or ground heat transfers are also important depending on the site and period. The principal energy for melting snow during ROS events depends on the rainfall amount, meteorological and snowpack conditions, and the watershed characteristics. Moreover, the percolating process of rain water through the snowpack and the runoff characteristics of the outflow from the snowpack bottom are poorly understood. Artificial rain sprinkling experiments have been performed at some snowy sites, but the methods used in these experiments differed. In Moshiri of northern Hokkaido, Japan, a total artificial rainfall of 120 mm sprinkled over the 1.12 m deep snowpack over 207 minutes. The water that flowed out from the bottom of the snowpack was 67% event water and 33% pre-event water. This result indicates that the rain and snowmelt water percolation process during ROS events is remarkably different from the process that occurs during typical snow melting on sunny days.\u0026lt;/p\u0026gt;", "subitem_description_language": "en", "subitem_description_type": "Other"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "日本水文科学会", "subitem_publisher_language": "ja"}, {"subitem_publisher": "THE JAPANESE ASSOCIATION OF HYDOROLOGICAL SCIENCES", "subitem_publisher_language": "en"}]}, "item_10001_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.4145/jahs.47.119"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "1883-7166", "subitem_source_identifier_type": "EISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "石井 吉之", "creatorNameLang": "ja"}, {"creatorName": "ISHII Yoshiyuki", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "平島 寛行", "creatorNameLang": "ja"}, {"creatorName": "HIRASHIMA Hiroyuki", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "山口 悟", "creatorNameLang": "ja"}, {"creatorName": "YAMAGUCHI Satoru", "creatorNameLang": "en"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "jpn"}]}, "item_title": "Rain-on-snowに伴う融雪災害の研究動向", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Rain-on-snowに伴う融雪災害の研究動向", "subitem_title_language": "ja"}, {"subitem_title": "Research trends in snowmelt hazards due to rain-on-snow events", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/5807", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-03-30"}, "publish_date": "2023-03-30", "publish_status": "0", "recid": "5807", "relation": {}, "relation_version_is_last": true, "title": ["Rain-on-snowに伴う融雪災害の研究動向"], "weko_shared_id": -1}