Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR026225 |
Impact of Flow Alteration and Temperature Variability on Hyporheic Exchange | |
Wu, Liwen1,2,3; Gomez-Velez, Jesus D.3,4; Krause, Stefan5,6; Singh, Tanu5; Woerman, Anders7; Lewandowski, Joerg1,2 | |
2020-03-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; USA; England; France; Sweden |
英文摘要 | Coupled groundwater flow and heat transport within hyporheic zones extensively affect water, energy, and solute exchange with surrounding sediments. The local and cumulative implications of this tightly coupled process strongly depend on characteristics of drivers (i.e., discharge and temperature of the water column) and modulators (i.e., hydraulic and thermal properties of the sediment). With this in mind, we perform a systematic numerical analysis of hyporheic responses to understand how the temporal variability of river discharge and temperature affect flow and heat transport within hyporheic zones. We identify typical time series of river discharge and temperature from gauging stations along the headwater region of Mississippi River Basin, which are characterized by different degrees of flow alteration, to drive a physics-based model of the hyporheic exchange process. Our modeling results indicate that coupled groundwater flow and heat transport significantly affects the dynamic response of hyporheic zones, resulting in substantial differences in exchange rates and characteristic time scales of hyporheic exchange processes. We also find that the hyporheic zone dampens river temperature fluctuations increasingly with higher frequency of temperature fluctuations. This dampening effect depends on the system transport time scale and characteristics of river discharge and temperature variability. Furthermore, our results reveal that the flow alteration reduces the potential of hyporheic zones to act as a temperature buffer and hinders denitrification within hyporheic zones. These results have significant implications for understanding the drivers of local variability in hyporheic exchange and the implications for the development of thermal refugia and ecosystem functioning in hyporheic zones. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000538000800021 |
WOS关键词 | STREAM TEMPERATURE ; VARIABLE VISCOSITY ; THERMAL REGIMES ; RESIDENCE TIMES ; DAM OPERATIONS ; WATER-FLOW ; BED FORMS ; BASE-FLOW ; GROUNDWATER ; RIVER |
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/280568 |
专题 | 资源环境科学 |
作者单位 | 1.Leibniz Inst Freshwater Ecol & Inland Fisheries, Dept Ecohydrol, Berlin, Germany; 2.Humboldt Univ, Geog Dept, Berlin, Germany; 3.Vanderbilt Univ, Dept Civil & Environm Engn, Nashville, TN 37235 USA; 4.Vanderbilt Univ, Dept Earth & Environm Sci, 221 Kirkland Hall, Nashville, TN 37235 USA; 5.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham, W Midlands, England; 6.Univ Claude Bernard Lyon 1, LEHNA Lab Ecol Nat & Man Impacted Hydrosyst, Lyon, France; 7.Royal Inst Technol, Div River Engn, Stockholm, Sweden |
推荐引用方式 GB/T 7714 | Wu, Liwen,Gomez-Velez, Jesus D.,Krause, Stefan,et al. Impact of Flow Alteration and Temperature Variability on Hyporheic Exchange[J]. WATER RESOURCES RESEARCH,2020,56(3). |
APA | Wu, Liwen,Gomez-Velez, Jesus D.,Krause, Stefan,Singh, Tanu,Woerman, Anders,&Lewandowski, Joerg.(2020).Impact of Flow Alteration and Temperature Variability on Hyporheic Exchange.WATER RESOURCES RESEARCH,56(3). |
MLA | Wu, Liwen,et al."Impact of Flow Alteration and Temperature Variability on Hyporheic Exchange".WATER RESOURCES RESEARCH 56.3(2020). |
条目包含的文件 | 条目无相关文件。 |
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