Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL088499 |
Observations of Enhanced Sediment Transport by Non‐Linear Internal Waves | |
A. Zulberti; N. L. Jones; G. N. Ivey | |
2020-09-28 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | The mechanisms responsible for sediment resuspension and transport by non‐linear internal waves (NLIWs) remain poorly understood largely due to a dearth of detailed field measurements. We present novel observations of the turbulent benthic boundary‐layer (BBL) beneath trains of NLIWs of depression in the ocean. At the 250m deep, low‐gradient (<0.2%) continental shelf site the BBL was near well‐mixed to an average height of about 10 m above the bottom. Above this bottom mixing‐layer, stratification constrained the extent of vertical sediment transport. NLIWs drove sediment transport by a combination of bed‐stress intensification, turbulent transport, and a vertical pumping mechanism associated with the compression and subsequent expansion of the mixing‐layer. There was no evidence that the observed dynamics were associated with a global instability, as proposed in previous studies. The results have implications for cross‐shelf mass transport, and highlight future challenges for measuring and modeling boundary‐layer processes within shelf‐seas. |
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/297876 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | A. Zulberti,N. L. Jones,G. N. Ivey. Observations of Enhanced Sediment Transport by Non‐Linear Internal Waves[J]. Geophysical Research Letters,2020. |
APA | A. Zulberti,N. L. Jones,&G. N. Ivey.(2020).Observations of Enhanced Sediment Transport by Non‐Linear Internal Waves.Geophysical Research Letters. |
MLA | A. Zulberti,et al."Observations of Enhanced Sediment Transport by Non‐Linear Internal Waves".Geophysical Research Letters (2020). |
条目包含的文件 | 条目无相关文件。 |
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