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DOI | 10.1029/2020GL088083 |
Tidally‐forced lee waves drive turbulent mixing along the Arctic Ocean margins | |
Ilker Fer; Zoé; Koenig; Igor E. Kozlov; Marek Ostrowski; Tom P. Rippeth; Laurie Padman; Anthony Bosse; Eivind Kolå; s | |
2020-08-06 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | In the Arctic Ocean, limited measurements indicate that the strongest mixing below the atmospherically forced surface mixed layer occurs where tidal currents are strong. However, mechanisms of energy conversion from tides to turbulence, and the overall contribution of tide‐driven mixing to Arctic Ocean state, are poorly understood. We present measurements from the shelf north of Svalbard that show abrupt isopycnal vertical displacements of 10‐‐50 m and intense dissipation associated with cross‐isobath diurnal tidal currents of ~0.15 ms‐1. Energy from the barotropic tide accumulated in a trapped baroclinic lee wave during maximum downslope flow and was released around slack water. During a 6‐h turbulent event, high frequency internal waves were present, the full 300 m depth water column became turbulent, dissipation rates increased by a factor of 100 and turbulent heat flux averaged 15 Wm‐2 compared with the background rate of 1 Wm‐2. |
领域 | 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/287648 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Ilker Fer,Zoé,Koenig,等. Tidally‐forced lee waves drive turbulent mixing along the Arctic Ocean margins[J]. Geophysical Research Letters,2020. |
APA | Ilker Fer.,Zoé.,Koenig.,Igor E. Kozlov.,Marek Ostrowski.,...&s.(2020).Tidally‐forced lee waves drive turbulent mixing along the Arctic Ocean margins.Geophysical Research Letters. |
MLA | Ilker Fer,et al."Tidally‐forced lee waves drive turbulent mixing along the Arctic Ocean margins".Geophysical Research Letters (2020). |
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