Готові списки джерел за темами / Stream and groundwater salinity

Добірка наукової літератури з теми "Stream and groundwater salinity"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Stream and groundwater salinity"

1

McNeil, V. H., and M. E. Cox. "Defining the climatic signal in stream salinity trends using the Interdecadal Pacific Oscillation and its rate of change." Hydrology and Earth System Sciences 11, no. 4 (May 3, 2007): 1295–307. http://dx.doi.org/10.5194/hess-11-1295-2007.

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Анотація:
Abstract. The impact of landuse on stream salinity is currently difficult to separate from the effect of climate, as the decadal scale climatic cycles in groundwater and stream hydrology have similar wavelengths to the landuse pattern. These hydrological cycles determine the stream salinity through accumulation or release of salt in the landscape. Widespread patterns apparent in stream salinity are discussed, and a link is demonstrated between stream salinity, groundwater levels and global climatic indicators. The Interdecadal Pacific Oscillation (IPO) has previously been investigated as a contributory climatic indicator for hydrological and related time series in the Southern Hemisphere. This study presents an approach which explores the rate of change in the IPO, in addition to its value, to define an indicator for the climate component of ambient shallow groundwater levels and corresponding stream salinity. Composite time series of groundwater level and stream salinity are compiled using an extensive but irregular database covering a wide geographical area. These are modelled with respect to the IPO and its rate of change to derive control time series. A example is given of how a stream salinity trend changes when the decadal climatic influence is removed.
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2

Bailey, Ryan T., Saman Tavakoli-Kivi, and Xiaolu Wei. "A salinity module for SWAT to simulate salt ion fate and transport at the watershed scale." Hydrology and Earth System Sciences 23, no. 7 (July 31, 2019): 3155–74. http://dx.doi.org/10.5194/hess-23-3155-2019.

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Abstract. Salinity is one of the most common water quality threats in river basins and irrigated regions worldwide. However, no available numerical models simulate all major processes affecting salt ion fate and transport at the watershed scale. This study presents a new salinity module for the SWAT model that simulates the fate and transport of eight major salt ions (SO42-, Ca2+, Mg2+, Na+, K+, Cl−, CO32-, HCO3-) in a watershed system. The module accounts for salt transport in surface runoff, soil percolation, lateral flow, groundwater, and streams, and equilibrium chemistry reactions in soil layers and the aquifer. The module consists of several new subroutines that are imbedded within the SWAT modelling code and one input file containing soil salinity and aquifer salinity data for the watershed. The model is applied to a 732 km2 salinity-impaired irrigated region within the Arkansas River Valley in southeastern Colorado and tested against root zone soil salinity, groundwater salt ion concentration, groundwater salt loadings to the river network, and in-stream salt ion concentration. The model can be a useful tool in simulating baseline salinity transport and investigating salinity best management practices in watersheds of varying spatial scales.
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3

Bari, M. A., and K. R. J. Smettem. "A daily salt balance model for representing stream salinity generation process following land use change." Hydrology and Earth System Sciences Discussions 2, no. 4 (July 22, 2005): 1147–83. http://dx.doi.org/10.5194/hessd-2-1147-2005.

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Abstract. We developed a coupled salt and water balance model to represent the stream salinity generation process following land use changes. The conceptual model consists of three main components with five stores: (i) Dry, Wet and Subsurface Stores, (ii) saturated Groundwater Store and (iii) a transient Stream zone Store. The Dry and Wet Stores represent the salt and water movement in the unsaturated zone and also the near-stream dynamic saturated areas, responsible for the generation of salt flux associated with surface runoff and interflow. The unsaturated Subsurface Store represents the salt bulge and the salt fluxes. The Groundwater Store comes into play when the groundwater level is at or above the stream invert and quantifies the salt fluxes to the Stream zone Store. In the stream zone module, we consider a "free mixing" between the salt brought about by surface runoff, interflow and groundwater flow. Salt accumulation on the surface due to evaporation and its flushing by initial winter flow is also incorporated in the Stream zone Store. The salt balance model was calibrated sequentially following successful application of the water balance model. Initial salt stores were estimated from measured salt profile data. We incorporated two lumped parameters to represent the complex chemical processes like diffusion-dilution-dispersion and salt fluxes due to preferential flow. The model has performed very well in simulating stream salinity generation processes observed at Ernies and Lemon experimental catchments in south west of Western Australia. The simulated and observed stream salinity and salt loads compare very well throughout the study period. The model slightly over predicted annual stream salt load by 6.2% and 6.8%, with R2 of 0.95 and 0.96 for Ernies and Lemon catchment, respectively.
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4

Bari, M. A., and K. R. J. Smettem. "A daily salt balance model for stream salinity generation processes following partial clearing from forest to pasture." Hydrology and Earth System Sciences 10, no. 4 (July 11, 2006): 519–34. http://dx.doi.org/10.5194/hess-10-519-2006.

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Анотація:
Abstract. We developed a coupled salt and water balance model to represent the stream salinity generation process following land use changes. The conceptual model consists of three main components with five stores: (i) Dry, Wet and Subsurface Stores, (ii) a saturated Groundwater Store and (iii) a transient Stream zone Store. The Dry and Wet Stores represent the salt and water movement in the unsaturated zone and also the near-stream dynamic saturated areas, responsible for the generation of salt flux associated with surface runoff and interflow. The unsaturated Subsurface Store represents the salt bulge and the salt fluxes. The Groundwater Store comes into play when the groundwater level is at or above the stream invert and quantifies the salt fluxes to the Stream zone Store. In the stream zone module, we consider a "free mixing" between the salt brought about by surface runoff, interflow and groundwater flow. Salt accumulation on the surface due to evaporation and its flushing by initial winter flow is also incorporated in the Stream zone Store. The salt balance model was calibrated sequentially following successful application of the water balance model. Initial salt stores were estimated from measured salt profile data. We incorporated two lumped parameters to represent the complex chemical processes like diffusion-dilution-dispersion and salt fluxes due to preferential flow. The model has performed very well in simulating stream salinity generation processes observed at Ernies and Lemon experimental catchments in south west of Western Australia. The simulated and observed stream salinity and salt loads compare very well throughout the study period with NSE of 0.7 and 0.4 for Ernies and Lemon catchment respectively. The model slightly over predicted annual stream salt load by 6.2% and 6.8%.
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5

Dalal, R. C., R. Eberhard, T. Grantham, and D. G. Mayer. "Application of sustainability indicators, soil organic matter and electrical conductivity, to resource management in the northern grains region." Australian Journal of Experimental Agriculture 43, no. 3 (2003): 253. http://dx.doi.org/10.1071/ea00186.

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Sustainability is a multifaceted concept. It is expressed here as 'to ensure that the past and current management and use of natural resources does not diminish their capacity to meet economic, environmental, social and aesthetic needs and opportunities of the present and future generations'. Sustainability indicators can be used to monitor responses in condition and trend as a result of natural resource management. We report here 2 case studies that demonstrate the significance of sustainability indicators in discerning trends in land and water resources in the southern Brigalow (Acacia harpophylla) Belt, a major region of the Queensland Murray–Darling Basin. First, soil organic matter was used as a sustainability indicator of soil productivity, soil aggregation, and its association with soil sodicity since these soil attributes affect infiltration rates, runoff and drainage. The second study involved comparing the trends in stream salinity (electrical conductivity) over 35 years and sustainability indicators for a dominant Vertosol in a region used for cereal cropping. Groundwater level and electrical conductivity of a long-term monitoring bore in the Dalby–Chinchilla region, were also analysed to discern trends in salinity and association of the groundwater with soil and stream salinity. Soil organic matter declined exponentially as the cultivation period for cereal cropping increased. This resulted in a reduction in soil nitrogen supply, and lower grain protein and cereal grain yields. The associated effects were reduced soil aggregation and increased soil sodicity. Electrical conductivity of the soil as well as stream water showed weak but declining trends with time. Groundwater level from the long-term monitoring bore near the stream and groundwater salinity showed significantly declining trends over the 35 years sampling period. Groundwater salinity was similar to the Vertosol electrical conductivity at 240–300 cm depths, suggesting groundwater connectivity to the overlaying soil. Thus, use of sustainability indicators provided a strong association among the various attributes of the landscape. However, it is still a challenge to integrate the various sustainability indicators in a landscape context, integrated over space (spatial and geographical distribution), attributes (quality characteristics) and time (trend).
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6

Gustafson, Chloe D., Kerry Key, Matthew R. Siegfried, J. Paul Winberry, Helen A. Fricker, Ryan A. Venturelli, and Alexander B. Michaud. "A dynamic saline groundwater system mapped beneath an Antarctic ice stream." Science 376, no. 6593 (May 6, 2022): 640–44. http://dx.doi.org/10.1126/science.abm3301.

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Antarctica’s fast-flowing ice streams drain the ice sheet, with their velocity modulated by subglacial water systems. Current knowledge of these water systems is limited to the shallow portions near the ice-bed interface, but hypothesized deeper groundwater could also influence ice streaming. Here, we use magnetotelluric and passive seismic data from Whillans Ice Stream, West Antarctica, to provide the first observations of deep sub–ice stream groundwater. Our data reveal a volume of groundwater within a >1-kilometer-thick sedimentary basin that is more than an order of magnitude larger than the known subglacial system. A vertical salinity gradient indicates exchange between paleo seawater at depth and contemporary basal meltwater above. Our results provide new constraints for subglacial water systems that affect ice streaming and subglacial biogeochemical processes.
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7

McNeil, V. H., and M. E. Cox. "Defining the climatic signal in stream salinity trends using the Interdecadal Pacific Oscillation and its rate of change." Hydrology and Earth System Sciences Discussions 3, no. 5 (September 20, 2006): 2963–90. http://dx.doi.org/10.5194/hessd-3-2963-2006.

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Анотація:
Abstract. The impact of landuse on stream salinity is difficult to separate from decadal climatic variability, as the decadal scale climatic cycles in ground water and stream hydrology have similar wavelengths to the landuse pattern. These hydrological cycles determine the stream salinity through accumulation or release of salt in the landscape. The Interdecadal Pacific Oscillation (IPO) has been investigated before as an indicator of hydrological and related time series in the southern hemisphere. This study presents a new approach, which uses the rate of change in the IPO, rather than just its absolute value, to define an indicator for the climate component of ambient shallow groundwater tables and corresponding stream salinity. Representative time series of water table and stream salinity indicators are compiled, using an extensive but irregular database covering a very wide geographical area. These are modelled with respect to the IPO and its rate of change to derive climatic indicators. The effect of removing the decadal climatic influence from stream salinity trends is demonstrated.
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8

Neal, C., and J. W. Kirchner. "Sodium and chloride levels in rainfall, mist, streamwater and groundwater at the Plynlimon catchments, mid-Wales: inferences on hydrological and chemical controls." Hydrology and Earth System Sciences 4, no. 2 (June 30, 2000): 295–310. http://dx.doi.org/10.5194/hess-4-295-2000.

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Abstract. Variations in sodium and chloride in atmospheric inputs (rainfall and mist), stream runoff and groundwater stores are documented for the upper Severn River (Afon Hafren and Afon Hore catchments), Plynlimon, mid-Wales. The results show five salient features. Sodium and chloride concentrations are highly variable and highly correlated in rainfall and mist. The sodium-chloride relationship in rainfall has a slope close to the sodium/chloride ratio in sea-water, and an intercept that is not significantly different from zero. This indicates that sea-salt is the dominant source of both sodium and chloride in rainfall, which would be expected given the maritime nature of the metrology. For mist, there is also a straight line with near-zero intercept, but with a slightly higher gradient than the sea-salt ratio, presumably due to small additional sodium inputs from other sources. There is an approximate input-output balance for both sodium and chloride, with the exception of one groundwater well, in which high chemical weathering results in an anomalous high Na/Cl ratio. Thus, atmospheric deposition is the dominant source of both sodium and chloride in groundwater and streamflow. The fluctuations in sodium and chloride concentrations in the streams and groundwaters are strongly damped compared to those in the rain and the mist, reflecting the storage and mixing of waters in the subsurface. On all timescales, from weeks to years, sodium fluctuations are more strongly damped than chloride fluctuations in streamflow. The additional damping of sodium is consistent with ion exchange buffering of sodium in the catchment soils. Sodium and chloride concentrations are linearly correlated in the streams and groundwaters, but the slope is almost universally less than the sea-salt ratio and there is a non-zero intercept. The Na/Cl ratio in streamflow and groundwater is higher than the sea-salt ratio when salinity is low and lower than the sea-salt ratio when salinity is high. This pattern of behaviour is again consistent with ion exchange buffering of sodium in the catchment soils. The core features of this study are two fold. Firstly, sodium and chloride concentrations are highly damped within the streams and groundwaters relative to the atmospheric input. Secondly, streamflow sodium and chloride respond in similar ways across the catchments, except for the added cation exchange damping of the sodium signal. These findings are remarkable given the heterogeneous nature of the catchments and the complexity of the chemical time series signals in the streams. Keywords: Sodium; chloride; rainfall; mist; stream water; groundwater; Plynlimon; Hafren; Hore; Tanllwyth; moorland; Sitka spruce; forest; cation exchange; fractal
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9

Makover, Judah, David Hasson, Yunyan Huang, Raphael Semiat, and Hilla Shemer. "Electrochemical removal of nitrate from a Donnan dialysis waste stream." Water Science and Technology 80, no. 4 (August 15, 2019): 727–36. http://dx.doi.org/10.2166/wst.2019.314.

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Abstract The objective of this work was to investigate electrochemical removal of nitrate from a high salinity waste stream generated by Donnan dialysis. Donnan dialysis for nitrate removal is a promising technique. It produces a distinctive composition of a high salinity waste stream of NaCl or Na2SO4 that requires a viable disposal method. The waste stream has the full anionic composition of contaminated groundwater, but the only cation is sodium. Experiments were conducted in a batch system setup. A copper cathode was chosen over brass, aluminum and graphite cathodes. A dimensionally stable anode (DSA), Ti/PbO2, was selected over a Ti/Pt anode. Electrochemical denitrification of high salinity Donnan dialysis nitrate wastes was successfully achieved, with different behavior exhibited in high salinity NaCl solution than in high salinity Na2SO4 solution. NaCl inhibited nitrate removal at high salinities while Na2SO4 did not. The maximum removals after 4 h operation in the high salinity wastes were 69 and 87% for the NaCl and Na2SO4 solutions respectively.
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10

Beverly, C., M. Bari, B. Christy, M. Hocking, and K. Smettem. "Predicted salinity impacts from land use change: comparison between rapid assessment approaches and a detailed modelling framework." Australian Journal of Experimental Agriculture 45, no. 11 (2005): 1453. http://dx.doi.org/10.1071/ea04192.

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This paper illustrates the hydrological limitations and underlying assumptions of 4 catchment modelling approaches representing different generic classes of predictive models. These models are commonly used to estimate the impacts of land use and management change on stream flow and salinity regimes within a target region. Three approaches are based on a simple conceptual framework that assumes a single layer groundwater aquifer and requires minimal information and calibration (Zhang-BC2C, CAT1D-BC2C and LUCICAT), whereas the fourth approach (CAT3D) adopts a fully distributed highly parameterised catchment model capable of simulating complex multi-layered groundwater aquifer systems. All models were applied to the Gardiner subcatchment within the Goulburn–Broken region of Victoria, identified as a National Action Plan for Salinity priority subcatchment. Current condition simulation results were compared with observed stream flow and groundwater hydrograph data. Results show that the simple frameworks predicted whole-of-catchment mean annual salt and water yield with minimum parameterisation. The fully distributed framework produced similar catchment-scale responses to the simple approaches, but required more intensive input data and solution times. However, the fully distributed framework provides finer temporal and spatial scale information within the catchment. The more detailed models (such as CAT3D) also have the predictive capacity to assess the within-catchment dynamics at a range of scales and account for landscape position and complex surface/groundwater interactions. This paper concludes that the simple frameworks are useful for judging the whole-of-catchment impacts of broad-scale land use change on catchment water yields and salinity and therefore provide valuable tools for community engagement. However, the within-catchment dynamics are not well represented and particular care must be taken when applying such models in those catchments where the interaction between groundwater and surface features result in saturated areas that are disconnected from streams. Adoption of a distributed groundwater modelling environment similar to that of CAT3D provides higher spatial resolution relative to the lumped broad scale groundwater glow system (GFS) based parameterisation adopted by the BC2C rapid assessment approaches. The developers of the BC2C model acknowledge that such models are currently limited to upland local and intermediate groundwater flow systems. Given that the majority of land salinisation is located in regions dominated by intermediate and regional groundwater systems, this tool is not well suited to adequately model regional processes. In contrast, the CAT3D distributed groundwater models are likely to be applicable across a range of scales and provide the capacity to assess the trade offs between salinity recharge and discharge intervention strategies. We conclude that more complex models (e.g. CAT3D) are needed to identify at the land management scale (paddock/farm) cost effective land use and land management changes within the catchment to improve catchment health.
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Дисертації з теми "Stream and groundwater salinity"

1

Buck, Christina Rene. "Managing Groundwater for Environmental Stream Temperature." Thesis, University of California, Davis, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3565483.

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This research explores the benefits of conjunctively managed surface and groundwater resources in a volcanic aquifer system to reduce stream temperatures while valuing agricultural deliveries. The example problem involves advancing the understanding of flows, stream temperature, and groundwater dynamics in the Shasta Valley of Northern California. Three levels of interaction are explored from field data, to regional simulation, to regional management optimization. Stream temperature processes are explored using Distributed Temperature Sensing (DTS) data from the Shasta River and recalibrating an existing physically-based flow and temperature model of the Shasta River. DTS technology can collect abundant high resolution river temperature data over space and time to improve development and performance of modeled river temperatures. These data also identify and quantify thermal variability of micro-habitat that temperature modeling and standard temperature sampling do not capture. This helps bracket uncertainty of daily temperature variation in reaches, pools, side channels, and from cool or warm surface or subsurface inflows. The application highlights the influence of air temperature on stream temperatures, and indicates that physically-based numerical temperature models, using a heat balance approach as opposed to statistical models, may under-represent this important stream temperature driver. The utility of DTS to improve model performance and detailed evaluation of hydrologic processes is demonstrated.

Second, development and calibration of a numerical groundwater model of the Pluto's Cave basalt aquifer and Parks Creek valley area in the eastern portion of Shasta Valley helps quantify and organize the current conceptual model of this Cascade fracture flow dominated aquifer. Model development provides insight on system dynamics, helps identify important and influential components of the system, and highlights additional data needs. The objective of this model development is to reasonably represent regional groundwater flow and to explore the connection between Mount Shasta recharge, pumping, and Big Springs flow. The model organizes and incorporates available data from a wide variety of sources and presents approaches to quantify the major flow paths and fluxes. Major water balance components are estimated for 2008-2011. Sensitivity analysis assesses the degree to which uncertainty in boundary flow affects model results, particularly spring flow.

Finally, this work uses optimization to explore coordinated hourly surface and groundwater operations to benefit Shasta River stream temperatures upstream of its confluence with Parks Creek. The management strategy coordinates reservoir releases and diversions to irrigated pasture adjacent to the river and it supplements river flows with pumped cool groundwater from a nearby well. A basic problem formulation is presented with results, sensitivity analysis, and insights. The problem is also formulated for the Shasta River application. Optimized results for a week in July suggest daily maximum and minimum stream temperatures can be reduced with strategic operation of the water supply portfolio. These temperature benefits nevertheless have significant costs from reduced irrigation diversions. Increased irrigation efficiency would reduce warm tail water discharges to the river instead of reducing diversions. With increased efficiency, diversions increase and shortage costs decrease. Tradeoffs and sensitivity of model inputs are explored and results discussed.

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2

Dale, Ryan. "Salinity, temperature, and macroinfaunal communities in groundwater seeps." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 9.34 Mb., p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:1435921.

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3

Chapman, Ryan William. "Urban groundwater, stream conditions, and homeowner perceptions." [Ames, Iowa : Iowa State University], 2008.

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4

Khater, A. M. R. "Management of stream-aquifer systems." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380176.

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5

Lund, David Charles. "Gulf Stream temperature, salinity and transport during the last millennium /." Cambridge, Mass. : Woods Hole, Mass. : Massachusetts Institute of Technology ; Woods Hole Oceanographic Institution, 2006. http://hdl.handle.net/1912/1774.

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Originally issued as the author's thesis (Ph. D.)--Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006.
"February 2006". "Doctoral dissertation." "Department of origin: Geology and Geophysics." "Joint Program in Oceanography/Applied Ocean Science and Engineering"--Cover. Includes bibliographical references.
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6

Lund, David Charles. "Gulf stream temperature, salinity and transport during the last millennium." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/34567.

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Thesis (Ph. D.)--Joint Program in Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), February 2006.
Includes bibliographical references.
Benthic and planktonic foraminiferal [delta]18O ([delta 18Oc) from a suite of well-dated, high-resolution cores spanning the depth and width of the Straits of Florida reveal significant changes in Gulf Stream cross-current density gradient during the last millennium. These data imply that Gulf Stream transport during the Little Ice Age (LIA: 1200-1850 A.D.) was 2-3 Sv lower than today. The timing of reduced flow is consistent with cold conditions in Northern Hemisphere paleoclimate archives, implicating Gulf Stream heat transport in centennial-scale climate variability of the last 1,000 years. The pattern of flow anomalies with depth suggests reduced LIA transport was due to weaker subtropical gyre wind stress curl. The oxygen isotopic composition of Florida Current surface water ([delta]18Ow) near Dry Tortugas increased 0.4%0/ during the course of the Little Ice Age (LIA: -1200-1850 A.D.), equivalent to a salinity increase of 0.8-1.5 psu. On the Great Bahama Bank, where surface waters are influenced by the North Atlantic subtropical gyre, [delta]18Ow increased by 0.3%o during the last 200 years. Although a portion (-O. 1%o) of this shift may be an artifact of anthropogenically-driven changes in surface water [Epsilon]CO2, the remaining [delta]18Ow signal implies a 0.4 to 1 psu increase in salinity after 200 yr BP.
(cont.) The simplest explanation of the [delta]18Ow, data is southward migration of the Atlantic Hadley circulation during the LIA. Scaling of the [delta]18Ow records to salinity using the modern low-latitude 180,w-S slope produces an unrealistic reversal in the salinity gradient between the two sites. Only if [delta]18Ow is scaled to salinity using a high-latitude [delta]18Ow-S slope can the records be reconciled. Changes in atmospheric 14C paralleled shifts in Dry Tortugas [delta]18Ow, suggesting that variable solar irradiance paced centennial-scale Hadley cell migration and changes in Florida Current salinity during the last millennium.
by David C. Lund.
Ph.D.
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7

Pritchard, Jodie Lee, and jodie_pritchard@hotmail com. "Dynamics of stream and groundwater exchange using environmental tracers." Flinders University. School of Chemistry, Physical & Earth Science, 2006. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20060407.122526.

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Regions of surface water and groundwater exchange are major sites for the transfer and transformation of solutes and nutrients between stream and subsurface environments. Conventional stream and groundwater exchange investigations are limited by methodologies that require intensive field investigations and/or the set-up of expensive infrastructure. These difficulties are exacerbated where hydraulic gradients are very low and stream discharge highly variable. This thesis uses a suite of environmental tracers (Cl-, Rn-222, H-2 & O-18, Sr-87/Sr-86) to characterise the extent of stream and groundwater exchange between a sand bed stream and adjacent alluvial aquifer in a subtropical catchment (the Wollombi Brook) of eastern Australia. The aims were to identify sources and relative contributions of different sources of groundwater to stream discharge and specifically to improve the methodology of using Rn-222 to obtain quantitative estimate of groundwater fluxes. The sensitivity of the Rn-222 technique for identifying groundwater discharge based on the Rn-222 concentration in stream water was improved via an iterative numerical approach to account for Rn-222 loss from stream water via turbulent gas exchange and radioactive decay. Optimal distances between stream sampling points for defining the magnitude of groundwater discharge to stream flow based on Rn-222 concentrations in stream water is a function of average stream velocity and water depth. The maximum allowable distance between sampling points for determining the magnitude of groundwater discharge to the Wollombi Brook was 2 km. This work showed that groundwater discharged to all reaches of the Wollombi Brook during baseflow and flood recession conditions. Alluvial groundwater contributed less than 30% of water to stream flow in the mid Wollombi Brook catchment. Dilution of steady-state Rn-222 concentrations measured in transects from the stream to the alluvial sediments showed that significant surface water and groundwater exchange occurs even when gradients between surface water and groundwater are low. Lateral stream water influx to the adjacent alluvial aquifer was more extensive in the lowland areas of the Wollombi Catchment during low flow than flood recession conditions. Extensive stream water influx to the adjacent alluvial aquifer occurs contrary to the net direction of surface water and groundwater flux (as indicated by hydraulic gradients toward the stream channel). The rate of stream and groundwater exchange within the adjacent alluvial aquifer appears to be greatest during baseflow conditions. Fresh alluvial groundwater appeared to provide a buffer against higher salinity regional groundwater discharge to the alluvial aquifer in some reaches of the Wollombi Brook catchment. Pumping of the alluvial aquifer and diversions of surface water may jeopardise the water quality and volume of the alluvial aquifer and induce water flow from the regional aquifer toward the stream, potentially salinising the fresh alluvial aquifer and subsequently the stream. The change in the Cl- concentration and the variation in slope of the deuterium � oxygen-18 line between consecutive stream sampling points could be used to differentiate between regional and alluvial groundwater discharge to stream flow. Incorporating this information with three-component end-member mixing using [Sr2+] and Sr-87/Sr-86 showed that stream and alluvial groundwater exchange within the stream channel was highest in the lowland floodplains during low flow conditions. The least stream and alluvial groundwater exchange occurred in the low streambed gradient mid reaches of the Wollombi Brook regardless of stream stage. The greatest difference in the degree of stream and alluvial groundwater exchange between high and low stream stages occurred in the lowland floodplains of the Wollombi Brook.
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8

Lewis, Marjorie Fay. "The significance of episodic recharge in the Wheatbelt of Western Australia /." Connect to thesis, 2000. http://eprints.unimelb.edu.au/archive/00000682.

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9

Kriyo, Sambodho. "The Dynamics of Groundwater Flow and Salinity Transport in Unconfined Coastal Aquifers." 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/97967.

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10

Mallakpour, Iman E. "Accounting for Stream Bank Storage for a Seasonal Groundwater Model." Thesis, The University of Arizona, 2011. http://hdl.handle.net/10150/203502.

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In recent research on groundwater and surfacewater interaction, attention has focused on the study of water exchanges between the near-stream aquifer and stream. One of the important near stream processes is bank storage. The aim of this thesis is to document the procedure required to develop a bank storage model that can be linked into a MODFLOW groundwater model. For this purpose, a groundwater model and a MATLAB code that can simulate bank storage process was developed. These two models were linked through the well package of MODFLOW. Result indicated that the number of stage rise and shape of stage hydrograph entering to stream system, when they have the same average stream stage, produced similar net flux of water between surface water and groundwater. In addition, the results show that reaches, which were gaining during normal flow of the stream network, can become a losing stream during high flow periods.
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Книги з теми "Stream and groundwater salinity"

1

Heislers, David. GHCMA groundwater and salinity monitoring evaluation. Bendigo, Vic: Primary Industries Research Victoria, 2004.

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2

Skogerboe, Gaylord V. Groundwater salinity in the Colorado river basin. Lahore: International Water Management Institute, 2000.

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3

M, Tillis Gina. Flow and salinity characteristics of the upper Suwannee River Estuary, Florida. Tallahassee, Fla: U.S. Geological Survey, 2000.

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4

Bales, Jerad. Flow and salinity in West Neck Creek, Virginia, 1989-92, and salinity in North Landing River, North Carolina, 1991-92. Raleigh, N.C: U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

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5

Bales, Jerad. Flow and salinity in West Neck Creek, Virginia, 1989-92, and salinity in North Landing River, North Carolina, 1991-92. Raleigh, N.C: U.S. Dept. of the Interior, U.S. Geological Survey, 1994.

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6

Achmad, Grufron. Hydrogeologic framework and the distribution and movement of brackish water in the Ocean City-Manokin aquifer system at Ocean City, Maryland. [Baltimore, Md. (2300 St. Paul St., Baltimore 21218)]: Dept. of Natural Resources, Maryland Geological Survey, 1993.

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7

Achmad, Grufron. Hydrogeologic framework and the distribution and movement of brackish water in the Ocean City-Manokin aquifer system at Ocean City, Maryland. [Baltimore, Md. (2300 St. Paul St., Baltimore 21218)]: Dept. of Natural Resources, Maryland Geological Survey, 1993.

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8

Mayer, Xanthe. Stream salinity status and trends in south-west Western Australia. East Perth, W.A: Natural Resource Management and Salinity Division, Dept. of Environment, 2005.

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9

Supply, Western Australia Steering Committee for Research on LandUse and Water. Stream salinity and its reclamation in south-west Western Australia. Leederville, WA: Water Authority of Western Australia, Water Resources Directorate, 1989.

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10

Leib, Kenneth J. Salinity trends in the upper Colorado River basin upstream from the Grand Valley Salinity Control Unit, Colorado, 1986-2003. Reston, Va: U.S. Geological Survey, 2008.

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Частини книг з теми "Stream and groundwater salinity"

1

Carrillo-Rivera, J. J., and S. Ouysse. "Groundwater Salinity groundwater salinity Due to Urban Growth groundwater salinity due to urban growth." In Encyclopedia of Sustainability Science and Technology, 4805–18. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-0851-3_439.

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2

Wang, Chi-Yuen, and Michael Manga. "Groundwater and Stream Composition." In Lecture Notes in Earth System Sciences, 257–87. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64308-9_9.

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AbstractChanges of groundwater chemistry have long been observed. We review some studies of the earthquake-induced changes of groundwater and streamflow composition. When data are relatively abundant and the hydrogeology is relatively simple, the observed changes may provide valuable insight into earthquake-induced changes of hydrogeological processes. Progress in this aspect, however, has been slow not only because systematic measurements are scare but also because of the distribution of chemical sources and sinks in the crust are often complex and unknown. Most changes are consistent with the model of earthquake-enhanced groundwater transport through basin-wide or local enhanced permeability caused by earthquake-induced breaching of hydrologic barriers such as aquitards, connecting otherwise isolated aquifers or other fluid sources, leading to fluid source switching and/or mixing. Because the interpretation of earthquake-induced groundwater and stream compositions is often under-constrained, multi-disciplinary approaches may be needed to provide a better constrained interpretation of the observed changes.
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Wen, Yuming. "GIS Analysis of Groundwater Salinity." In Wetlands and Habitats, 81–87. Second edition. | Boca Raton: CRC Press, [2020] | Revised: CRC Press, 2020. http://dx.doi.org/10.1201/9780429445507-12.

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4

Carrillo-Rivera, José Joel, and Samira Ouysse. "Groundwater Salinity Due to Urban Growth." In Environmental Geology, 113–26. New York, NY: Springer US, 2019. http://dx.doi.org/10.1007/978-1-4939-8787-0_439.

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Carrillo-Rivera, José Joel, and Samira Ouysse. "Groundwater Salinity Due to Urban Growth." In Encyclopedia of Sustainability Science and Technology, 1–14. New York, NY: Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-2493-6_439-3.

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Harada, Morihiro, Mohamed M. Hantush, and Miguel A. Marino. "Hydraulic Analysis on Stream-Aquifer Interaction by Storage Function Models." In Groundwater Updates, 229–34. Tokyo: Springer Japan, 2000. http://dx.doi.org/10.1007/978-4-431-68442-8_38.

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7

Deverel, Steven J., Sabine Goldberg, and Roger Fujii. "Chemistry of Trace Elements in Soils and Groundwater." In Agricultural Salinity Assessment and Management, 89–137. Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/9780784411698.ch04.

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8

Barnett, Steve, and David Williamson. "New Approaches for Allocation Reductions and Groundwater Salinity Management in South Australia." In Sustainable Groundwater Management, 355–63. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-32766-8_19.

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9

Tien, Truong Hong, Emiko Katayama, Mehdi Bettahar, and Uichiro Matsubayashi. "Correlation of Optimal Salinity as Function of Water/Oil Ratio in Brine/Surfactant/Alcohol/Oil System." In Groundwater Updates, 105–10. Tokyo: Springer Japan, 2000. http://dx.doi.org/10.1007/978-4-431-68442-8_18.

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10

Greene, Richard, Wendy Timms, Pichu Rengasamy, Muhammad Arshad, and Richard Cresswell. "Soil and Aquifer Salinization: Toward an Integrated Approach for Salinity Management of Groundwater." In Integrated Groundwater Management, 377–412. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-23576-9_15.

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Тези доповідей конференцій з теми "Stream and groundwater salinity"

1

Drovovozova, T. I., S. A. Marias, E. S. Kulakova, and N. N. Panenko. "GEOECOLOGICAL CYCLES OF SALT-FORMING IONS IN AGRICULTURAL LANDSCAPES." In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS. DSTU-PRINT, 2020. http://dx.doi.org/10.23947/interagro.2020.1.509-513.

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The analysis of the chemical composition of natural water bodies-receivers of drainage and discharge waters. It is shown that the background concentrations of salt-forming ions in water bodies exceed the Mpcrx, which indicates the dominant influence of surface runoff from the entire catchment area and underground feeding by mineralized sulphate groundwater on the formation of the quality of the water environment. The chemical composition of water extract from the soil from irrigated areas adjacent to reservoirs was studied on the example of semikarakorsky district of the Rostov region. The classification of irrigated soils (0-20 cm) adjacent to the reservoirs, the degree and type of salinity depending on the chemistry of salts, which showed that agricultural activity is accompanied by a transformation of the geo-ecological cycles of salt-ions, leading to soil salinization, increase of mineralization of drainage runoff and, as a consequence, water of small streams. Based on the study of the chemical composition of natural, groundwater and water quality in reservoirs, and soil adjacent to sewers the features of dynamics of the content of salt ions and the intensity of their migration in agroecosystems.
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2

Sukop, Michael C., Martina Rogers, and Michael Phelan. "COASTAL GROUNDWATER SALINITY AND THE WATER TABLE." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-341274.

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3

Heikkinen, Eero, Pauli Saksa, Paula Ruotsalainen, Henry Ahokas, Jorma Nummela, and Markku Paananen. "Groundwater Salinity Model Based On Deep Electromagnetic Soundings." In 9th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 1996. http://dx.doi.org/10.3997/2214-4609-pdb.205.1996_110.

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4

Heikkinen, Eero, Pauli Saksa, Paula Ruotsalainen, Henry Ahokas, Jorma Nummela, and Markku Paananen. "Groundwater Salinity Model Based on Deep Electromagnetic Soundings." In Symposium on the Application of Geophysics to Engineering and Environmental Problems 1996. Environment and Engineering Geophysical Society, 1996. http://dx.doi.org/10.4133/1.2922236.

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5

Erwin, Elizabeth G., and J. P. Gannon. "EXPLORING NEAR STREAM GROUNDWATER MEASUREMENTS IN A HEADWATER STREAM CATCHMENT." In 65th Annual Southeastern GSA Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016se-273638.

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6

Ball, Lyndsay, and Burke Minsley. "Incorporating uncertainty into groundwater salinity mapping using AEM data." In First International Meeting for Applied Geoscience & Energy. Society of Exploration Geophysicists, 2021. http://dx.doi.org/10.1190/segam2021-3584073.1.

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7

Kimsal, Charles, Chelsea Peters, Anner Paldor, Ryan Frederiks, and Holly Michael. "GROUNDWATER LEVELS AND COASTAL STREAM SALINIZATION PROCESSES." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-358942.

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8

Hunt, Allen. "QUANTITATIVELY RELATING STREAM NETWORK EVOLUTION TO GROUNDWATER FLOW." In Joint 56th Annual North-Central/ 71st Annual Southeastern Section Meeting - 2022. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022nc-375516.

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9

Richard A Weber. "Correlation of Stream Water Surface with Floodplain Groundwater Level." In 2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2010. http://dx.doi.org/10.13031/2013.29718.

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Coffey, Ruth, Hannah Sprinkle, Eric Sherry, Brian Sturgis, and Bill Hulslander. "SPATIAL AND TEMPORAL PATTERNS OF GROUNDWATER ELEVATION AND SALINITY ON ASSATEAGUE ISLAND." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-283459.

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Звіти організацій з теми "Stream and groundwater salinity"

1

Symington, N., A. Ray, C. Harris-Pascal, K. P. Tan, Y. Ley-Cooper, and R. C. Brodie. Groundwater salinity estimation using borehole and AEM data: A framework for uncertainty analysis. Geoscience Australia, 2020. http://dx.doi.org/10.11636/135242.

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2

Dyke, L. Regional groundwater and stream chemistry survey, Oak Ridges Moraine, Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1999. http://dx.doi.org/10.4095/210858.

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3

Hinton, M. J. Measuring stream discharge to infer the spatial distribution of groundwater discharge. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/205774.

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4

Campiglia, Andres D., and Florencio E. Hernandez. Field-deployable, nano-sensing approach for real-time detection of free mercury, speciation and quantification in surface stream waters and groundwater samples at the U.S. Department of Energy contaminated sites. Office of Scientific and Technical Information (OSTI), August 2014. http://dx.doi.org/10.2172/1150748.

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5

Bitew, Menberu, and Rhett Jackson. Characterization of Flow Paths, Residence Time and Media Chemistry in Complex Landscapes to Integrate Surface, Groundwater and Stream Processes and Inform Models of Hydrologic and Water Quality Response to Land Use Activities; Savannah River Site. Office of Scientific and Technical Information (OSTI), February 2015. http://dx.doi.org/10.2172/1171150.

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6

Kidder, J. A., M. B. McClenaghan, M I Leybourne, M. W. McCurdy, P. Pelchat, D. Layton-Matthews, C. E. Beckett-Brown, and A. Voinot. Geochemical data for stream and groundwaters around the Casino Cu-Au-Mo porphyry deposit, Yukon (NTS 115 J/10 and 115 J/15). Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328862.

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This open file reports geochemical data for stream and groundwater samples collected around the Casino porphyry Cu-Au-Mo deposit, one of the largest and highest-grade deposits of its kind in Canada. The calc-alkaline porphyry is hosted in a Late Cretaceous quartz monzonite and associated breccias in the unglaciated region of west central Yukon. Water chemistry around the deposit was investigated because: (i) the deposit has not yet been disturbed by mining; (ii) the deposit was known to have metal-rich waters in local streams; and (iii) the deposit has atypically preserved ore zones. Stream water samples were collected at 22 sites and groundwater samples were collected from eight sites. Surface and groundwaters around the Casino deposit are anomalous with respect to Cd (up to 5.4 µg/L), Co (up to 64 µg/L), Cu (up to 1657 µg/L), Mo (up to 25 µg/L), As (up to 17 µg/L), Re (up to 0.7 µg/L), and Zn (up to 354 µg/L) concentrations. The stable isotopes of O and H of the groundwaters are essentially identical to the surface waters and plot close to the local and global meteoric water lines, indicating that the waters represent modern recharge, consistent with the generally low salinities of all the waters (total dissolved solids range from 98 to 1320 mg/L). Sulfur and Sr isotopes are consistent with proximal waters interacting with the Casino rocks and mineralization; a sulfide-rich bedrock sample from the deposit has delta-34S = -1.2 permille and proximal groundwaters are only slightly heavier (-0.3 to 3.1 permille). These geochemical and isotopic results indicate that surface water geochemistry is a suitable medium for mineral exploration for porphyry-style mineralization in the Yukon, and similar unglaciated regions in Canada. The atypical geochemical signature (Mo, Se, Re, As, Cu) of these types of deposits are typically reflected in the water chemistry and S isotopes provide a more local vectoring tool.
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