Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL074625 |
Toward relaxed eddy accumulation measurements of sediment-water exchange in aquatic ecosystems | |
Lemaire, Bruno J.1; Noss, Christian2; Lorke, Andreas2 | |
2017-09-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Germany |
英文摘要 | Solute transport across the sediment-water interface has major implications for water quality and biogeochemical cycling in aquatic ecosystems. Existing measurement techniques, however, are not capable of resolving sediment-water fluxes of most constituents under in situ flow conditions. We investigated whether relaxed eddy accumulation (REA), a micrometeorological technique with conditional sampling of turbulent updrafts and downdrafts, can be adapted to the aquatic environment. We simulated REA fluxes by reanalyzing eddy covariance measurements from a riverine lake. We found that the empirical coefficient that relates mass fluxes to the concentration difference between both REA samples is invariant with scalar and flow and responds as predicted by a joint Gaussian distribution of linearly correlated variables. Simulated REA fluxes differed on average by around 30% from eddy covariance fluxes (mean absolute error). Assessment of the lower quantification limit suggests that REA can potentially be applied for measuring benthic fluxes of a new range of constituents that cannot be assessed by standard eddy covariance methods. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411702400027 |
WOS关键词 | OXYGEN FLUXES ; PERMEABLE SEDIMENTS ; RIVERINE LAKE ; TRACE GASES ; INTERFACE ; TIME ; COEFFICIENT ; ATMOSPHERE ; SURFACES ; WAVES |
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/28670 |
专题 | 气候变化 |
作者单位 | 1.UPE, UPEC, Ecole Ponts, LEESU,AgroParisTech, Marne La Vallee, France; 2.Univ Koblenz Landau, Inst Environm Sci, Landau, Germany |
推荐引用方式 GB/T 7714 | Lemaire, Bruno J.,Noss, Christian,Lorke, Andreas. Toward relaxed eddy accumulation measurements of sediment-water exchange in aquatic ecosystems[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(17). |
APA | Lemaire, Bruno J.,Noss, Christian,&Lorke, Andreas.(2017).Toward relaxed eddy accumulation measurements of sediment-water exchange in aquatic ecosystems.GEOPHYSICAL RESEARCH LETTERS,44(17). |
MLA | Lemaire, Bruno J.,et al."Toward relaxed eddy accumulation measurements of sediment-water exchange in aquatic ecosystems".GEOPHYSICAL RESEARCH LETTERS 44.17(2017). |
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