Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL089845 |
Analysis of acoustic observations of double‐diffusive finestructure in the Arctic Ocean | |
Nicole Shibley; Mary‐; Louise Timmermans; Christian Stranne | |
2020-09-09 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | Double‐diffusive convection may occur if both temperature and salinity increase with depth, as in the Arctic Ocean. The process is identifiable by a staircase structure, with mixed layers separated by high‐gradient interfaces in temperature and salinity. These staircases, which persist if turbulence levels are weak, are widely present in the Arctic Ocean and responsible for transporting heat toward the overlying sea ice. Acoustic observations (reflection coefficients) from a broadband echosounder are analyzed here to track the detailed evolution of interfaces in the Arctic'€™s double‐diffusive staircase. We infer interface thicknesses from reflection coefficient profiles and find that thicknesses appear to be related to water‐column displacements. Further, we relate reflection coefficients to interface stratification, and interpret stratification changes in the context of turbulence acting to thicken interfaces. The high resolution capabilities of the echosounder allow for insights into how double‐diffusive heat fluxes and inferred mixing levels may vary in space/time. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/294028 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Nicole Shibley,Mary‐,Louise Timmermans,等. Analysis of acoustic observations of double‐diffusive finestructure in the Arctic Ocean[J]. Geophysical Research Letters,2020. |
APA | Nicole Shibley,Mary‐,Louise Timmermans,&Christian Stranne.(2020).Analysis of acoustic observations of double‐diffusive finestructure in the Arctic Ocean.Geophysical Research Letters. |
MLA | Nicole Shibley,et al."Analysis of acoustic observations of double‐diffusive finestructure in the Arctic Ocean".Geophysical Research Letters (2020). |
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