Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Stonedahl, S. H.; Roche, Kevin; Stonedahl, Forrest; Packman, Aaron I.

doi:10.3791/53285

Cited by 4 publications

(3 citation statements)

References 35 publications

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“…The complexity of nested hyporheic flows will increase with the number and diversity of bedforms in the channel. Localscale variation in bedform size will drive the longitudinal patterns of upwelling and downwelling, along with multi-scale distributions of HEF at reach scale (Stonedahl et al, 2015(Stonedahl et al, , 2013(Stonedahl et al, , 2010Gooseff et al, 2006).…”

Section: In-channel Bedform Sequencesmentioning

confidence: 99%

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Magliozzi¹

2018

Preprint

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Rivers are not isolated systems but interact continuously with groundwater from their confined headwaters to their wide lowland floodplains. In the last few decades, research on the hyporheic zone (HZ) has increased appreciation of the hydrological importance and ecological significance of connected river and groundwater systems. While recent studies have investigated hydrological, biogeochemical and ecohydrological processes in the HZ at bedform and reach scales, a comprehensive understanding of processbased interactions between factors operating at different spatial and temporal scales driving hyporheic exchange flows (HEFs) at reach scale and larger is still missing. Therefore, this review summarizes the factors and processes at catchment, valley, and reach scales that interact to control spatial and temporal variations in hyporheic exchange flows. By using a multi-scale perspective, this review connects field observations and modelling studies to identify the process driving patterns and dynamics of HEF. Finally, the influence of process interactions over multiple spatial scales is illustrated in a case study, supported by new GIS analyses, which highlights the importance of valley-scale factors to the expression of HEF at the reach scale. This conceptual framework will aid the development of approaches to interpret hyporheic exchange across scales, infer scaling relationships, and inform catchment management decisions.

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Section: In-channel Bedform Sequencesmentioning

confidence: 99%

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Magliozzi¹

2018

Preprint

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“…Exchange characteristics within the hyporheic zone are often quantified using tracer tests in conjunction with numerical modeling (e.g. Wagner & Harvey, 1997;Storey et al, 2003;Wondzell, 2005;Stonedahl et al, 2015). A variety of tracers have been used, including dyes (e.g.…”

Section: General Introductionmentioning

confidence: 99%

Analysis of the Influence of Ferricrete on Hyporheic Exchange Flows

Rickel¹

2020

Geological Society of America Abstracts With Programs

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The area of confluence between surface water and groundwater, known as the hyporheic zone, is a natural biogeochemical filter that is dependent on channel morphology and hydraulic conductivity, pressure-driven downwelling and upwelling currents, and stream discharge. In Cement Creek near Silverton, Colorado, deposition of amorphous iron minerals reduces the permeability of the streambed and limits flow through the hyporheic zone. This limited exchange may lower the potential for pollutant attenuation from the metals-loaded waters of Cement Creek within the hyporheic zone. This study found that hyporheic exchange in this system is limited in spatial extent and reduces during low flow when compared to what we would expect from streams without ferricrete. To quantify flow through the hyporheic zone, we used time-lapse electrical resistivity of the streambed and banks of Cement Creek taken over the course of a day in conjunction with a four-hour salt injection tracer test. The solute was constrained within the streambed, with little flow through the banks, and had longer residence times in the hyporheic zone during high flow than at low flow. Slug test data suggested the presence of a zone of lower permeability at 44-cm depth that was likely made of precipitated ferricrete that cemented cobbles together. The comparison of apparent bulk conductivity from the geophysics to in-stream fluid conductivity allowed for the calculation of mass transfer parameters between the stream and hyporheic zone based on the difference in solute retardation patterns in the two breakthrough curves. During high flow, in-stream breakthrough curves displayed slower breakthrough and greater smoothing which is consistent with the geophysical inversion results that indicate higher residence times at high flow. Analyses of low flow data indicated decreased residence time within the subsurface and comparatively faster breakthrough. The hyporheic storage area within Cement Creek, estimated from the modeled capacity coefficient, decreased by two orders of magnitude between high (0.5 m 2 as modeled from hysteresis curve and in STAMMT-L) and low flow (0.

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“…Laboratory flume tests have also been employed to investigate hyporheic exchanges [46][47][48][49]. Tonina and Buffington [50] reported a series of recirculating flume tests to investigate hyporheic exchanges in pool-riffle channels spanning a broad range of discharge and bedform morphologies.…”

Section: Introductionmentioning

confidence: 99%

An Analysis of the Factors Affecting Hyporheic Exchange based on Numerical Modeling

Ren

Wang

Zhou

et al. 2019

Water

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The hyporheic zone is a transition zone for the exchange of matter and energy between surface water and subsurface water. The study of trends and sensitivities of bed hyporheic exchanges to the various influencing factors is of great significance. The surface−groundwater flow process was simulated using a multiphysics computational fluid dynamics (CFD) method and compared to previous flume experiments. Based on that, the single-factor effects of flow velocity (u), water depth (H), dune wave height (h), and bed substrate permeability (κ) on hyporheic exchange in the bed hyporheic zone were investigated. The sensitivity analysis of various factors (H, u, dune wavelength (L), h, bed substrate porosity (θ), κ, and the diffusion coefficient of solute molecules (Dm)) in the surface−subsurface water coupling model was done using orthogonal tests. The results indicated that u, h, and κ were positively related, whereas H was negatively related to hyporheic exchange. H and u showed large effects, whereas κ, Dm, and θ had moderate effects, and L and h showed small effects on hyporheic exchange. This study provides valuable references for the protection and recovery of river ecology.

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Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Cited by 4 publications

References 35 publications

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Analysis of the Influence of Ferricrete on Hyporheic Exchange Flows

An Analysis of the Factors Affecting Hyporheic Exchange based on Numerical Modeling

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