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Title: 氷河融解水を起源とする高濁度水プルームの数値モデリング
Other Titles: Modeling subglacial meltwater plumes and associated sediment transport
Authors: 松村, 義正1 Browse this author
大橋, 良彦2 Browse this author
青木, 茂3 Browse this author →KAKEN DB
杉山, 慎4 Browse this author →KAKEN DB
Authors(alt): Matsumura, Yoshimasa1
Ohashi, Yoshihiko2
Aoki, Shigeru3
Sugiyama, Shin4
Keywords: 融解水プルーム
Issue Date: 31-Mar-2017
Publisher: 低温科学第75巻編集委員会
Journal Title: 低温科学
Journal Title(alt): Low Temperature Science
Volume: 75
Start Page: 77
End Page: 84
Abstract: グリーンランド氷床の表面融解水は,氷河を貫通するムーランを通過して岩盤に到達し,陸上の堆積物を懸濁物質として取り込みながら氷河末端で海洋に流出する.淡水である融解水は海水より軽いため直ちに湧昇し,氷河末端で高濁度の融解水プルームを形成してフィヨルド内の鉛直循環を駆動する.本研究では粒子追跡法を組み込んだ非静力学海洋モデルによる理想化シミュレーションによってこの高濁度水プルームを再現し,特にフィヨルド内の懸濁物質輸送過程について解析した.
The surface meltwater of the Greenland ice sheet is drained through englacial channels called moulins that reach the bedrock, and hence it contains substantial amounts of terrestrial sediments. The meltwater runoff from marineterminating glaciers form an upwelling turbid plume at the glacier front and drives overturning circulation in the fjord. We perform idealized numerical experiments on the turbid meltwater plume and associated sediment transport by using a non-hydrostatic ocean model coupled with a Lagrangian particle tracking system that simulates the dynamics of suspended sediments.
Type: bulletin (article)
Appears in Collections:低温科学 = Low Temperature Science > 第75巻

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