Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR020326 |
Quantifying the distribution of tracer discharge from boreal catchments under transient flow using the kinematic pathway approach | |
Soltani, S. S.; Cvetkovic, V. | |
2017-07-01 | |
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:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | This focuses on solute discharge from boreal catchments with relatively shallow groundwater table and topography-driven groundwater flow. We explore whether a simplified semianalytical approach can be used for predictive modeling of the statistical distribution of tracer discharge. The approach is referred to as the "kinematic pathways approach'' (KPA). This approach uses hydrological and tracer inputs and topographical and hydrogeological information; the latter regards average aquifer depth to the less permeable bedrock. A characteristic velocity of water flow through the catchment is further obtained from the overall water balance in the catchment. For the waterborne tracer transport through the catchment, morphological dispersion is accounted for by topographical analysis of the distribution of pathway lengths to the catchment outlet. Macrodispersion is accounted for heuristically by assuming an effective Peclet number. Distribution of water travel times through the catchment reflect the dispersion on both levels and are derived in both a forward mode (transit time from input to outlet) and a backward mode (water age when arriving at outlet arrival). The forward distribution of water travel times is further used for the tracer discharge modeling by convolution. The approach is applied to modeling of a 23 year long chloride data series for a specific catchment Kringlan (Sweden), and for generic modeling to better understand the dependence of the tracer discharge distribution on different dispersion aspects. The KPA is found to provide reasonable estimates of tracer discharge distribution, and particularly of extreme values, depending on method for determining the pathway length distribution. As a possible alternative analytical model of tracer transport through a catchment, the reservoir approach generally results in large tracer dispersion. This implies that tracer discharge distributions obtained from a mixed reservoir approach and from KPA are only compatible under large dispersion conditions. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407895000026 |
WOS关键词 | RESIDENCE TIME DISTRIBUTION ; AGE DISTRIBUTIONS ; GROUNDWATER AGE ; SOLUTE TRANSPORT ; SUBSURFACE ; SYSTEMS ; MODELS ; SCALE ; TOPOGRAPHY ; SIMULATION |
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/19972 |
专题 | 资源环境科学 |
作者单位 | KTH Royal Inst Technol, Dept Water Resources Engn, Stockholm, Sweden |
推荐引用方式 GB/T 7714 | Soltani, S. S.,Cvetkovic, V.. Quantifying the distribution of tracer discharge from boreal catchments under transient flow using the kinematic pathway approach[J]. WATER RESOURCES RESEARCH,2017,53(7). |
APA | Soltani, S. S.,&Cvetkovic, V..(2017).Quantifying the distribution of tracer discharge from boreal catchments under transient flow using the kinematic pathway approach.WATER RESOURCES RESEARCH,53(7). |
MLA | Soltani, S. S.,et al."Quantifying the distribution of tracer discharge from boreal catchments under transient flow using the kinematic pathway approach".WATER RESOURCES RESEARCH 53.7(2017). |
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