Groundwater-surface water interactions in the hyporheic zone under climate change scenarios

Zhou, Shan; Peng, Shuchan; Yue, Junsheng; Liu, Hong; Williams, D. Dudley

doi:10.1007/s11356-014-3255-3

Cited by 38 publications

(20 citation statements)

References 119 publications

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“…This observation is consistent with previous studies (Cherkauer and Lettenmaier 1999). However, contrary to what would be expected, rainfall (less than 12 mm/day) and ET 0 had little impact on the seasonal variation of groundwater levels, which was inconsistent with previous studies conducted in frozen soil regions (Chen et al 2004;Hoque et al 2007;Dragoni et al 2008;Zhou et al 2014). However, contrary to what would be expected, rainfall (less than 12 mm/day) and ET 0 had little impact on the seasonal variation of groundwater levels, which was inconsistent with previous studies conducted in frozen soil regions (Chen et al 2004;Hoque et al 2007;Dragoni et al 2008;Zhou et al 2014).…”

Section: Dominant Factors Affecting the Seasonal Variation Of Groundwsupporting

confidence: 48%

The Response of Shallow Groundwater Levels to Soil Freeze–Thaw Process on the Qinghai‐Tibet Plateau

Dai

Guo

et al. 2018

Groundwater

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The Qinghai‐Tibet plateau has the world's largest area of seasonally frozen ground. Here, shallow groundwater displays behavior that is distinct from that elsewhere in the world. In the present study, we explore the seasonal and interannual variation of the shallow groundwater levels from 2012 to 2016, and attempt to quantitatively evaluate the relative influences of individual driving factors on the shallow groundwater levels based on boosted regression trees. The results show that: (1) on a seasonal scale, the groundwater levels were characterized by a double peak and double valley relationship, while on an interannual scale the groundwater levels showed a slightly downwards trend from 2012 to 2016; and (2) during the frozen period, the seasonal variation of groundwater levels was determined by mean air temperature through its effect on the soil thaw–freeze process, accounting for 53.15% of total variation. Meanwhile, ET0 and rainfall exerted little impact on the seasonal variation of groundwater levels, which might be attributed to the aquitard of frozen soil that impedes the exchange between surface water and groundwater. Moreover, there was a lag between groundwater levels and soil freezing–thawing. During the non‐frozen period, the mean air temperature was again the most important factor impacting the variation of groundwater levels, through its effect on ET0, and accounted for 40.75% of total variation, while rainfall had little effect on groundwater levels when rainfall intensity was less than 12 mm/day. These results will benefit predictions of future trends in groundwater levels within the context of global warming.

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Section: Dominant Factors Affecting the Seasonal Variation Of Groundwsupporting

confidence: 48%

The Response of Shallow Groundwater Levels to Soil Freeze–Thaw Process on the Qinghai‐Tibet Plateau

Dai

Guo

et al. 2018

Groundwater

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“…We deduce that adjacent polluted shallow groundwater, with relatively high concentrations of nutrients due to intensified agricultural activities (Chen et al, ; Li et al, ), affected the nutrient contents in the deep sediments of the southern, western, and northern zones, possibly through upwelling flow. Upwelling flow usually carries relatively high N and P concentrations from deep to shallow sediments, and these concentrations are exchanged with the overlying water (Ammar et al, ; Zhou et al, ).…”

Section: Resultsmentioning

confidence: 99%

“…Seasonal changes in temperature in the hyporheic zone strengthen or weaken nitrification, denitrification, mineralization, and microbial activity (Hu, Li, Xie, Deng, & Chen, ; Zhou et al, ). The temperature observations in this study showed that the temperature at the sediment surface and a depth of 20 cm were, on average, 5.1–7.5 and 8.2–10.8°C in the 2nd investigation and 11.3–13.2 and 9.8–12.9°C in the 1st investigation, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The hyporheic zone of Lake Taihu, particularly the nearshore part, is a substantial natural storage location for nutrients as well as a connecting path between lake water and the surrounding polluted shallow groundwater (Chen, Wo, Chen, & Fang, ; Rode, Hartwig, Wagenschein, Kebede, & Borchardt, ; Zhou et al, ). Hyporheic flow with large nutrient loads usually makes the hyporheic zone an active source or sink (Li, Wang, Zhang, Yuan, & Xu, ; Matisoff, Watson, Guo, Duewiger, & Steely, ; Stelzer, Bartsch, Richardson, & Strauss, ), while static sediments, particularly surface sediments, generally act as a passive source or sink, releasing nutrients into the overlying water after disturbance from external forces (e.g., wind currents) or via static diffusion (Rode et al, ; Wang et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Level and distribution of nutrients in the hyporheic zone of Lake Taihu (China) and potential drivers

Wang

2019

Water Environment Research

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To better understand the nutrient distributions in the hyporheic zone of a large shallow eutrophic lake (Lake Taihu) and the potential drivers, the total organic carbon (TOC), total nitrogen (TN), and total phosphorus (TP) were investigated in March and December 2016. Spatial differences in the TN and TP contents existed in the hyporheic zone, particularly between the eastern and southern zones and the western and northern zones. The TOC/TN ratios in the western, northern, and central zones were mostly <8 and even reached 4, indicating that organic matter originated from aquatic organisms and algae, whereas those in the southern and eastern zones exhibited wide ranges, indicating complex pollution sources. The chloride depth profiles suggested that upwelling hyporheic flow potentially occurred in the southern, western, and northern zones, while alternating flow directions occurred in the eastern zone and no flow or weak flow occurred in the central zone. Compared to the 1st investigation, the TOC, TN, and TP in sediments in the 2nd investigation increased by 13%, 41%, and 87%, respectively, and these changes were mostly due to large hyporheic fluxes with high nutrient concentrations from shallow groundwater. The behavior of the hyporheic zone as an active pollution source/sink due to hyporheic flow should be considered in the comprehensive management of Lake Taihu. Practitioner points Depth profiles of nutrients differed between sampling sites and between zones of Lake Taihu due to different pollution sources. Nutrients in sediment increased largely during winter compared to spring due to potential groundwater pollution through upwelling flow. No significant difference in sediment total organic carbon and ratios of C/N indicates a similar internal pollution source lake wide.

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“…Ground water temperatures tend to be more stable than surface temperatures, thereby effectively buffering stream temperature from rapid changes in air temperature [e.g. Caissie, 2006;Kaushal et al, 2010;Zhou et al, 2014]. As such, our reach-level random effect of air temperature may indicate relative groundwater input, but would reflect a combination of the amount of ground water and the depth or temperature of that ground water relative to the surface temperature.…”

Section: Discussionmentioning

confidence: 99%

A hierarchical model of daily stream temperature for regional predictions

Hocking

O'Neil

Letcher

2018

Preprint

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Key Points:• Flexible approach to modeling daily stream temperature across broad space • Hierarchical modeling approach allows for inclusion of short observed stream temperature time series to fine-tune estimates to local conditions • Air temperature effects on stream temperature were moderated by precipitation and drainage area AbstractStream temperature is an important exogenous factor influencing populations of stream organisms such as fish, amphibians, and invertebrates. Many states regulate stream protections based on temperature. Therefore, stream temperature models are important, particularly for estimating thermal regimes in unsampled space and time. To help meet this need, we developed a hierarchical model of daily stream temperature and applied it across the eastern United States. Our model accommodates many of the key challenges associated with daily stream temperature models including the lagged response of water temperature to changes in air temperature, incomplete and widely-varying observed time series, spatial and temporal autocorrelation, and the inclusion of predictors other than air temperature. We used 248,517 daily stream temperature records from 1,352 streams to fit our model and 100,909 records were withheld for model validation. Our model had a root mean squared error of 0.61 C for the fitted data and 2.03 C for the validation data, indicating excellent fit and good predictive power for understanding regional temperature patterns. We then used our model to predict daily stream temperatures from 1980 -2015 for all streams <200 km 2 from Maine to Virginia. From these, we calculated derived stream metrics including mean July temperature, mean summer temperature, and the thermal sensitivity of each stream reach to changes in air temperature. Although generally water temperature follows similar latitudinal and altitudinal patterns as air temperature, there are considerable differences at the reach scale based on landscape and land-use factors.

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Groundwater-surface water interactions in the hyporheic zone under climate change scenarios

Cited by 38 publications

References 119 publications

The Response of Shallow Groundwater Levels to Soil Freeze–Thaw Process on the Qinghai‐Tibet Plateau

The Response of Shallow Groundwater Levels to Soil Freeze–Thaw Process on the Qinghai‐Tibet Plateau

Level and distribution of nutrients in the hyporheic zone of Lake Taihu (China) and potential drivers

A hierarchical model of daily stream temperature for regional predictions

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