Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL076789 |
Determining Near-Bottom Fluxes of Passive Tracers in Aquatic Environments | |
Bluteau, Cynthia E.1,2,3; Ivey, Gregory N.2,3; Donis, Daphne4; McGinnis, Daniel F.4 | |
2018-03-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:6页码:2716-2725 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; Australia; Switzerland |
英文摘要 | In aquatic systems, the eddy correlation method (ECM) provides vertical flux measurements near the sediment-water interface. The ECM independently measures the turbulent vertical velocities w' and the turbulent tracer concentration c' at a high sampling rate (> 1 Hz) to obtain the vertical flux (w'c') over bar from their time-averaged covariance. This method requires identifying and resolving all the flow-dependent time (and length) scales contributing to (w'c') over bar. With increasingly energetic flows, we demonstrate that the ECM's current technology precludes resolving the smallest flux-contributing scales. To avoid these difficulties, we show that for passive tracers such as dissolved oxygen, (w'c') over bar can be measured from estimates of two scalar quantities: the rate of turbulent kinetic energy dissipation.. and the rate of tracer variance dissipation chi(c). Applying this approach to both laboratory and field observations demonstrates that (w'c') over bar is well resolved by the new method and can provide flux estimates in more energetic flows where the ECM cannot be used. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430106000019 |
WOS关键词 | TURBULENT-BOUNDARY-LAYERS ; EDDY-CORRELATION ; SURFACE-LAYER ; OXYGEN ; FLOW ; DISSIPATION ; CONSTANT ; SPECTRUM |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/28646 |
专题 | 气候变化 |
作者单位 | 1.Univ Quebec, Inst Sci Mer, Rimouski, PQ, Canada; 2.Univ Western Australia, Sch Civil Environm & Min Engn, Crawley, WA, Australia; 3.Univ Western Australia, Oceans Inst, Crawley, WA, Australia; 4.Univ Geneva, Fac Sci, Dept FA Forel Environm & Aquat Sci DEFSE, Aquat Phys Grp, Geneva, Switzerland |
推荐引用方式 GB/T 7714 | Bluteau, Cynthia E.,Ivey, Gregory N.,Donis, Daphne,et al. Determining Near-Bottom Fluxes of Passive Tracers in Aquatic Environments[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(6):2716-2725. |
APA | Bluteau, Cynthia E.,Ivey, Gregory N.,Donis, Daphne,&McGinnis, Daniel F..(2018).Determining Near-Bottom Fluxes of Passive Tracers in Aquatic Environments.GEOPHYSICAL RESEARCH LETTERS,45(6),2716-2725. |
MLA | Bluteau, Cynthia E.,et al."Determining Near-Bottom Fluxes of Passive Tracers in Aquatic Environments".GEOPHYSICAL RESEARCH LETTERS 45.6(2018):2716-2725. |
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