Groundwater-Surface water interactions research: Past trends and future directions

Journal of Hydrology, Год журнала: 2024, Номер unknown, С. 132061 - 132061

Опубликована: Сен. 1, 2024

Язык: Английский

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Building Cross-Site and Cross-Network collaborations in critical zone science

Journal of Hydrology, Год журнала: 2023, Номер 618, С. 129248 - 129248

Опубликована: Фев. 9, 2023

The critical zone (CZ) includes natural and anthropogenic environments, where life, energy matter cycles combine in complex interactions time space. Critical observatories (CZOs) have been established around the world, yet their limitations space duration of observations, as well oft-existing dominant disciplinary research field(s) each CZO may limit transferability local knowledge to other settings or hinder integrative CZ understanding. In this regard, review advocates for cross-site cross-network collaborations sciences. We posit that type collaboration is becoming indispensable understanding past trends future trajectories CZ, context fast-developing widespread environmental changes. Aided by a series cyberseminars community survey, we highlight some existing initiatives, tools techniques, cross-cutting science questions could benefit from such syntheses, various types (montane, alpine, arctic, managed agricultural lakes, wetlands, streams, landscapes disturbed drought and/or wildfire, etc.). This also identifies discusses major legitimate concerns obstacles collaborative approach, including data harmonization integration social sciences, proposes tentative ways forward.

Язык: Английский

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Groundwater exfiltration pattern determination in the sub-arctic catchment using thermal imaging, stable water isotopes and fully-integrated groundwater-surface water modelling

Journal of Hydrology, Год журнала: 2023, Номер 626, С. 130342 - 130342

Опубликована: Окт. 13, 2023

Groundwater-surface water (GW-SW) interactions play an important role in northern catchments, but their dynamics and water, carbon, nutrient balances are still poorly understood. In this case study, we (1) explored groundwater-surface a sub-arctic headwater watershed Pallaslompolo, Finnish Lapland. (2) We compared fully-integrated physically-based simulations of the groundwater surface with unique spatially distributed field datasets drone-derived thermal infrared imaging (TIR) peat pore stable isotopes. Simulations observations point to similar GW-exfiltration areas, agreement between slightly over 50% for isotopes modeling more than two thirds modeling. The provides evidence that GW-SW model simple parameterization approach can successfully identify main features high-latitude catchment. All methods suggest complex nature exchange is focused topographical lowlands. Our simulation results also highlight how specific locations serve as exfiltration zones, downwelling or 'mixed' where both interaction types occur at different times according hydrological state system. Modeling abrupt reversals – phenomenon known peatland areas. To conclude, three should be treated complementary when describing understanding within peatlands, only provide comprehensive estimates spatial temporal patterns magnitudes fluxes.

Язык: Английский

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Shallow and local or deep and regional? Inferring source groundwater characteristics across mainstem riverbank discharge faces

Hydrological Processes, Год журнала: 2023, Номер 37(7)

Опубликована: Июль 1, 2023

Abstract Riverbank groundwater discharge faces are spatially extensive areas of preferential seepage that exposed to air at low river flow. Some conceptual hydrologic models indicate represent the spatial convergence highly variable age and length flowpaths, while others greater consistency in source characteristics. Our detailed field investigation points nested across mainstem riverbank was accomplished by: (1) leveraging new temperature‐based recursive estimation (extended Kalman Filter) modelling methodology evaluate seasonal, diurnal, event‐driven flux patterns, (2) developing a multi‐parameter toolkit based on readily measured attributes classify general flowpath depth scale, and, (3) assessing whether flow tend common or convergent sources. Five major were mapped along Farmington River, CT, United States using thermal infrared imagery. We then installed vertical temperature profilers directly into 39 for 4.5 months track patterns. Monthly water chemistry also collected with one synoptic stable isotopes dissolved radon gas. found pervasive evidence shallow sources upstream wide valley section deep bedrock, as primarily evidenced by pronounced diurnal Discharge seasonal trends bank storage transitions during large events provided further indication shallow, local In contrast, downstream associated near surface cross cutting bedrock exhibited regional characteristics such more patterns temperatures. However, many neighbouring had similar differed chloride concentrations, indicating additional effects localized heterogeneity overprinting larger scale

Язык: Английский

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Groundwater flowpath characteristics drive variability in per- and polyfluoroalkyl substances (PFAS) loading across a stream-wetland system

The Science of The Total Environment, Год журнала: 2025, Номер 964, С. 178533 - 178533

Опубликована: Янв. 24, 2025

Язык: Английский

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Preferential Groundwater Discharges Along Stream Corridors Are Disregarded Sources of Greenhouse Gases

Journal of Geophysical Research Biogeosciences, Год журнала: 2025, Номер 130(3)

Опубликована: Март 1, 2025

Abstract Groundwater delivery of greenhouse gases (GHGs) to stream banks and riparian areas, before mixing with surface waters, has not been well quantified. We measured preferential groundwater GHGs within three reaches, found that discharging emitted more CO 2 were sources N O compared without actively groundwater, which less sinks. At one our concentrations 1.4–19.2 1.1–40.6 times higher than those in water, respectively, rates 1.5 1.6 water emissions per unit area. On average, 21% (range 0%–100%) at the bank waters. Preferential GHG may contribute substantially corridor be underestimated when using a channel‐centric approach estimate riverine budgets.

Язык: Английский

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Characterizing seasonal submarine groundwater discharge patterns in Daya Bay, China using thermal infrared remote sensing

Marine Pollution Bulletin, Год журнала: 2025, Номер 218, С. 118188 - 118188

Опубликована: Май 22, 2025

Язык: Английский

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Exploring landscape and geologic controls on spatial patterning of streambank groundwater discharge in a mixed land use watershed

Hydrological Processes, Год журнала: 2024, Номер 38(3)

Опубликована: Март 1, 2024

Abstract Preferential groundwater discharge features along stream corridors are ecologically important at local and network scales, yet we lack quantification of the multiscale controls on spatial patterning discharge. Here identify physical attributes that best explain variation in presence lateral extent preferential discharges two 5th order streams, Housatonic Farmington Rivers, 32 1st to 4th reaches across River network. We mapped locations exposed streambanks using handheld thermal infrared cameras paired with high‐resolution topographic land use cover datasets, surficial soil characteristic maps, depth‐to‐bedrock geophysical measurements. The unconfined River, MA, USA (12 km) had fewer less (41 38 m active discharge/km river) compared partially confined CT, (26 km; 169 129 river). Using a moving window analysis, found both rivers was more likely occur where bank slopes were steeper, floodplain narrower, degree confinement higher. Along saturated hydraulic conductivity higher shallower. Among surveyed (33.2 km total length) within watershed, observed all but reaches, varied from 0 25% banks (mean = 6%), reach steep, high, watershed urbanization low. Our results show that, though surface (e.g., topographic, cover) subsurface characteristics, bedrock depth) factors control prevalence streambank discharge, dominant vary valley settings sizes.

Язык: Английский

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Evidence of Groundwater Seepage and Mixing at the Vicinity of a Knickpoint in a Mountain Stream

Geophysical Research Letters, Год журнала: 2024, Номер 51(17)

Опубликована: Сен. 8, 2024

Abstract Streamflow generation and biochemical hotspots are significantly influenced by groundwater contributions distributed along the drainage network. However, identifying geomorphic landscape features that drive groundwater‐surface water interactions remains challenging. In this study, we investigate role of knickpoints in controlling these a mountainous stream Switzerland. We employ combination synoptic sampling environmental tracers, endmember mixing calculations, flow simulations. Our findings reveal substantial seepage concentrated near knickpoint main river stem. Using parsimonious modeling, validate hypothesis topographical shape enhances local discharge rates. quantify approximately 20% total catchment streamflow originates from around knickpoint. These results indicate significant for physicochemical mixing, providing clear method major localized sources generation.

Язык: Английский

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Real‐Time Monitoring and Postprocessing of Thermal Infrared Video Images for Sampling and Mapping Groundwater Discharge

Water Resources Research, Год журнала: 2023, Номер 59(4)

Опубликована: Апрель 1, 2023

Abstract Groundwater discharge along channels can affect stream discharge, chemistry, and ecological communities. Although the spatial distribution of groundwater springs wide rivers be investigated by areal thermal infrared (TIR) remote sensing, this technique is difficult to apply mapping at a high resolution under riparian tree canopies. We present real‐time monitoring postprocessing method ground‐based TIR video for determining sampling points surface water temperature. applied two headwater streams in Hokkaido, Japan, summer. The first site was 1.3‐km‐long reach underlain Pleistocene andesite lava. Almost all were colder had different chemistry compared that water, which supports usefulness zones. Video showed cold spaced every ∼100 m, their did not follow topography. At second site, warm Holocene volcanic ash. mainly seeped from hyporheic zones downstream, while footslope. Some much higher solute concentrations than springs, suggests temperature useful inferring sources discharge. could map only locations but also heterogeneity associated with inputs.

Язык: Английский

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