Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR019733 |
Mixing as a driver of temporal variations in river hydrochemistry: 1. Insights from conservative tracers in the Andes-Amazon transition | |
Torres, Mark A.1,2; Baronas, J. Jotautas2; Clark, Kathryn E.3; Feakins, Sarah J.2; West, A. Joshua2 | |
2017-04-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The response of hillslope processes to changes in precipitation may drive the observed changes in the solute geochemistry of rivers with discharge. This conjecture is most robust when variations in the key environmental factors that affect hillslope processes (e.g., lithology, erosion rate, and climate) are minimal across a river's catchment area. For rivers with heterogenous catchments, temporal variations in the relative contributions of different tributary subcatchments may modulate variations in solute geochemistry with runoff. In the absence of a dense network of hydrologic gauging stations, alternative approaches are required to distinguish between the different drivers of temporal variability in river solute concentrations. In this contribution, we apportion the water and solute fluxes of a reach of the Madre de Dios River (Peru) between its four major tributary subcatchments during two sampling campaigns (wet and dry seasons) using spatial variations in conservative tracers. Guided by the results of a mixing model, we identify temporal variations in solute concentrations of the main stem Madre de Dios that are due to changes in the relative contributions of each tributary. Our results suggest that variations in tributary mixing are, in part, responsible for the observed concentration-discharge (C-Q) relationships. The implications of these results are further explored by reanalyzing previously published C-Q data from this region, developing a theoretical model of tributary mixing, and, in a companion paper, comparing the C-Q behavior of a suite of major and trace elements in the Madre de Dios River system. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403682600034 |
WOS关键词 | CONCENTRATION-DISCHARGE RELATIONSHIPS ; LEAF WAX BIOMARKERS ; HEADWATER CATCHMENTS ; CHEMISTRY ; RUNOFF ; WATER ; GEOCHEMISTRY ; CONFLUENCES ; SYSTEM ; FLUXES |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/21825 |
专题 | 资源环境科学 |
作者单位 | 1.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 2.Univ Southern Calif, Dept Earth Sci, Los Angeles, CA 90089 USA; 3.Univ Penn, Dept Earth & Environm Sci, Philadelphia, PA 19104 USA |
推荐引用方式 GB/T 7714 | Torres, Mark A.,Baronas, J. Jotautas,Clark, Kathryn E.,et al. Mixing as a driver of temporal variations in river hydrochemistry: 1. Insights from conservative tracers in the Andes-Amazon transition[J]. WATER RESOURCES RESEARCH,2017,53(4). |
APA | Torres, Mark A.,Baronas, J. Jotautas,Clark, Kathryn E.,Feakins, Sarah J.,&West, A. Joshua.(2017).Mixing as a driver of temporal variations in river hydrochemistry: 1. Insights from conservative tracers in the Andes-Amazon transition.WATER RESOURCES RESEARCH,53(4). |
MLA | Torres, Mark A.,et al."Mixing as a driver of temporal variations in river hydrochemistry: 1. Insights from conservative tracers in the Andes-Amazon transition".WATER RESOURCES RESEARCH 53.4(2017). |
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