Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021896 |
Exploring the Dynamics of Transit Times and Subsurface Mixing in a Small Agricultural Catchment | |
Yang, Jie1; Heidbuechel, Ingo1; Musolff, Andreas1; Reinstorf, Frido2; Fleckenstein, Jan H.1,3 | |
2018-03-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:3页码:2317-2335 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | The analysis of transit/residence time distributions (TTDs and RTDs) provides important insights into the dynamics of stream-water ages and subsurface mixing. These insights have significant implications for water quality. For a small agricultural catchment in central Germany, we use a 3D fully coupled surface-subsurface hydrological model to simulate water flow and perform particle tracking to determine flow paths and transit times. The TTDs of discharge, RTDs of storage and fractional StorAge Selection (fSAS) functions are computed and analyzed on daily basis for a period of 10 years. Results show strong seasonal fluctuations of the median transit time of discharge and the median residence time, with the former being strongly related to the catchment wetness. Computed fSAS functions suggest systematic shifts of the discharge selection preference over four main periods: In the wet period, the youngest water in storage is preferentially selected, and this preference shifts gradually toward older ages of stored water when the catchment transitions into the drying, dry and wetting periods. These changes are driven by distinct shifts in the dominance of deeper flow paths and fast shallow flow paths. Changes in the shape of the fSAS functions can be captured by changes in the two parameters of the approximating Beta distributions, allowing the generation of continuous fSAS functions representing the general catchment behavior. These results improve our understanding of the seasonal dynamics of TTDs and fSAS functions for a complex real-world catchment and are important for interpreting solute export to the stream in a spatially implicit manner. |
英文关键词 | transit time subsurface mixing SAS functions |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430364900049 |
WOS关键词 | STORAGE SELECTION FUNCTIONS ; FLOW PATHS ; WATER ; DISTRIBUTIONS ; VARIABILITY ; NITRATE ; RUNOFF ; EXPORT |
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/21419 |
专题 | 资源环境科学 |
作者单位 | 1.Helmholtz Zentrum Umweltforsch GmbH UFZ, Dept Hydrogeol, Leipzig, Germany; 2.Univ Appl Sci Magdeburg Stendal, Dept Water Environm Construct & Safety, Magdeburg, Germany; 3.Univ Bayreuth, Bayreuth Ctr Ecol & Environm Res BayCEER, Bayreuth, Germany |
推荐引用方式 GB/T 7714 | Yang, Jie,Heidbuechel, Ingo,Musolff, Andreas,et al. Exploring the Dynamics of Transit Times and Subsurface Mixing in a Small Agricultural Catchment[J]. WATER RESOURCES RESEARCH,2018,54(3):2317-2335. |
APA | Yang, Jie,Heidbuechel, Ingo,Musolff, Andreas,Reinstorf, Frido,&Fleckenstein, Jan H..(2018).Exploring the Dynamics of Transit Times and Subsurface Mixing in a Small Agricultural Catchment.WATER RESOURCES RESEARCH,54(3),2317-2335. |
MLA | Yang, Jie,et al."Exploring the Dynamics of Transit Times and Subsurface Mixing in a Small Agricultural Catchment".WATER RESOURCES RESEARCH 54.3(2018):2317-2335. |
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