Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR019739 |
Characterizing hyporheic exchange processes using high-frequency electrical conductivity-discharge relationships on subhourly to interannual timescales | |
Singley, Joel G.1,2; Wlostowski, Adam N.2,3; Bergstrom, Anna J.2,4; Sokol, Eric R.2; Torrens, Christa L.1,2; Jaros, Chris2; Wilson, Colleen E.2,3; Hendrickson, Patrick J.2,3; Gooseff, Michael N.2,3 | |
2017-05-01 | |
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:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Concentration-discharge (C-Q) relationships are often used to quantify source water contributions and biogeochemical processes occurring within catchments, especially during discrete hydrological events. Yet, the interpretation of C-Q hysteresis is often confounded by complexity of the critical zone, such as numerous source waters and hydrochemical nonstationarity. Consequently, researchers must often ignore important runoff pathways and geochemical sources/sinks, especially the hyporheic zone because it lacks a distinct hydrochemical signature. Such simplifications limit efforts to identify processes responsible for the transience of C-Q hysteresis over time. To address these limitations, we leverage the hydrologic simplicity and long-term, high-frequency Q and electrical conductivity (EC) data from streams in the McMurdo Dry Valleys, Antarctica. In this two end-member system, EC can serve as a proxy for the concentration of solutes derived from the hyporheic zone. We utilize a novel approach to decompose loops into subhysteretic EC-Q dynamics to identify individual mechanisms governing hysteresis across a wide range of timescales. We find that hydrologic and hydraulic processes govern EC response to diel and seasonal Q variability and that the effects of hyporheic mixing processes on C-Q transience differ in short and long streams. We also observe that variable hyporheic turnover rates govern EC-Q patterns at daily to interannual timescales. Last, subhysteretic analysis reveals a period of interannual freshening of glacial meltwater streams related to the effects of unsteady flow on hyporheic exchange. The subhysteretic analysis framework we introduce may be applied more broadly to constrain the processes controlling C-Q transience and advance understanding of catchment evolution. |
英文关键词 | hyporheic zone electrical conductivity concentration-discharge Antarctica |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403712100036 |
WOS关键词 | MCMURDO DRY VALLEYS ; HUMID HEADWATER CATCHMENTS ; GLACIAL MELTWATER STREAMS ; STORM RUNOFF GENERATION ; MOUNTAIN STREAM ; TRANSIENT STORAGE ; POLAR DESERT ; HYDROLOGIC CONNECTIVITY ; HYDROGRAPH SEPARATION ; ANTARCTIC STREAMS |
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/21355 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Colorado, Environm Studies Program, Boulder, CO 80309 USA; 2.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA; 3.Univ Colorado, Dept Civil Environm & Architectural Engn, Boulder, CO 80309 USA; 4.Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Singley, Joel G.,Wlostowski, Adam N.,Bergstrom, Anna J.,et al. Characterizing hyporheic exchange processes using high-frequency electrical conductivity-discharge relationships on subhourly to interannual timescales[J]. WATER RESOURCES RESEARCH,2017,53(5). |
APA | Singley, Joel G..,Wlostowski, Adam N..,Bergstrom, Anna J..,Sokol, Eric R..,Torrens, Christa L..,...&Gooseff, Michael N..(2017).Characterizing hyporheic exchange processes using high-frequency electrical conductivity-discharge relationships on subhourly to interannual timescales.WATER RESOURCES RESEARCH,53(5). |
MLA | Singley, Joel G.,et al."Characterizing hyporheic exchange processes using high-frequency electrical conductivity-discharge relationships on subhourly to interannual timescales".WATER RESOURCES RESEARCH 53.5(2017). |
条目包含的文件 | 条目无相关文件。 |
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