Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL092251 |
Phase‐resolved wave boundary layer dynamics in a shallow estuary | |
Marianne Cowherd; Galen Egan; Stephen Monismith; Oliver Fringer | |
2021-03-22 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | We present in situ observations of near‐bed velocity profiles with high temporal and spatial resolution from a Nortek Vectrino Profiler deployed in South San Francisco Bay. Using Hilbert analysis, we ensemble‐averaged near‐bed velocity profiles by wave phase and calculated wave phase‐dependent boundary layer thickness for varying wave and current conditions. We also applied mixing length relationships to derive a boundary layer thickness‐based eddy‐viscosity and compared this estimate to one obtained from the k–ɛ turbulence model. From the eddy viscosity estimates, we find that while turbulence responds instantaneously to shear, boundary layer thickness lags by a scaling estimate based on the turbulence response timescale. This analysis provides a method for wave‐phase decomposition of field‐based velocity profile time series and shows that there is a finite‐time response between turbulence dissipation and boundary layer thickness. |
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/320983 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Marianne Cowherd,Galen Egan,Stephen Monismith,等. Phase‐resolved wave boundary layer dynamics in a shallow estuary[J]. Geophysical Research Letters,2021. |
APA | Marianne Cowherd,Galen Egan,Stephen Monismith,&Oliver Fringer.(2021).Phase‐resolved wave boundary layer dynamics in a shallow estuary.Geophysical Research Letters. |
MLA | Marianne Cowherd,et al."Phase‐resolved wave boundary layer dynamics in a shallow estuary".Geophysical Research Letters (2021). |
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