Browse Articles
Using Additional Moderator to Control the Footprint of a COSMOS Rover for Soil Moisture Measurement
-  24 May 2021
Key Points
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The possibility of using high density polyethylene moderator on a set of Cosmic-Ray Neutron Probes (Rovers) to limit the field of view is explored
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Neutron scattering simulations show that the moderator provides considerable control over the sensor's footprint
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The Rover was used to conduct measurements on a stubble field to test the system in measuring spatial and temporal soil moisture variation
Rapid Advances in Mobile Mass Spectrometry Enhance Tracer Hydrology and Water Management
-  24 May 2021
Key Points
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New mobile mass spectrometry (MS) systems enable low-cost, high-resolution dissolved gas measurements
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High-resolution sampling of dissolved gas tracers can provide new insights into hydrologic processes and systems
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Combining dissolved gas measurements with other experimental and numerical methods has the potential to further hydrological research
Hyporheic Exchange Driven by Submerged Rigid Vegetation: A Modeling Study
-  22 May 2021
Key Points
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Vegetation-induced hyporheic flow was analyzed through experiments with numerical models
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A set of parsimonious models for predicting vegetation-induced hyporheic flow were developed
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Compared to dune-induced hyporheic flow, vegetation drives higher hyporheic flux through shallower hyporheic zones
A Multivariate Approach to Generate Synthetic Short‐To‐Medium Range Hydro‐Meteorological Forecasts Across Locations, Variables, and Lead Times
-  21 May 2021
Key Points
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We develop a multivariate synthetic forecast methodology to support design, validation, and testing of forecast informed water management
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We validate our method in two case studies that illustrate the model’s ability to capture complex forecast behavior
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We find good model performance in developing synthetic forecasts of both streamflow and meteorology (temperature and precipitation)
Climatic and Landscape Controls on Long‐Term Baseflow
-  20 May 2021
Key Points
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Derived baseflow index (BFI) and baseflow coefficient (BFC) as functions of aridity index, storage capacity index, and a shape parameter
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When storage capacity index is small (large), BFI is less sensitive to climate aridity index in arid (humid) regions
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The control of climate variability (particularly seasonality) on BFI is strong, but not for BFC
GRACEfully Closing the Water Balance: A Data‐Driven Probabilistic Approach Applied to River Basins in Iran
-  19 May 2021
Key Points
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A Bayesian hierarchical model fuses water balance data containing unknown bias and random errors
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The model is solved using a combination of Markov Chain Monte Carlo sampling and iterative smoothing
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Computed posteriors provide hydrologically consistent data error and water balance estimates
Abiotic Drivers of a Deep Cyanobacteria Layer in a Stratified and Eutrophic Lake
-  18 May 2021
Key Points
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A high frequency, long-duration field study reveals diurnal and seasonal trends in cyanobacteria vertical distribution dynamics
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In a stratified lake environment, magnitude of subsurface cyanobacteria peak concentration is driven primarily by the depth and temperature at the thermocline
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In a stratified lake environment, center of gravity of subsurface cyanobacterial biomass is driven primarily by the width and temperature of the surface mixed layer
Spatial Distributions of At‐Many‐Stations Hydraulic Geometry for Mountain Rivers Originated From the Qinghai‐Tibet Plateau
-  17 May 2021
Key Points
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Cross sections across river reach show strong AMHG relations
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AMHG strength increases with the increased stream order and contributing area
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Low b values contribute to congruent hydraulics outside the observed range only for cross sections located in higher-order streams
Pore‐Scale Modeling of Spontaneous Imbibition in Porous Media Using the Lattice Boltzmann Method
-  17 May 2021
Key Points
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A quasi-3D color-gradient model is developed to simulate spontaneous imbibition in porous media micromodel
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Spontaneous imbibition in a homogeneous micromodel is studied for varying viscosity ratio, surface wettability, and micromodel height
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Lucas-Washburn equation is demonstrated inapplicable for spontaneous imbibition in considered micromodel due to capillary valve effect
Effects of vegetation, sediment supply and sea level rise on the morphodynamic evolution of tidal channels
-  4 June 2021
Key Points
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We propose a biomorphodynamic model for the quasi-3D equilibrium morphology of tidal channels
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Vegetation growth produces different competing effects on channel morphology
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Mathematical modeling provides a useful tool for quantitative long-term tidal biomorphodynamics
Monitoring and Modeling Drainage Network Contraction and Dry Down in Mediterranean Headwater Catchments
-  3 June 2021
Key Points
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For the first time, the network shrinking and dry down in two seasonally dry hot-summer Mediterranean headwater catchments are analyzed
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Network length dynamics depend on the difference between antecedent accumulated rainfall and evapotranspiration
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The modeling of the flowing network spatial patterns based on topographic and geological information achieved accuracies up to 92%
Light and shadow in mapping alpine snowpack with unmanned aerial vehicles in the absence of ground control points
-  3 June 2021
Key Points
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Under good lighting conditions results were comparable to previous studies that had used GCPs, with an average RMSE of 0.19 m.
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When large areas were under shadow from the terrain, or solar light was affected by clouds, the estimated error increased noticeably.
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UAV with RTK positioning allow a fast acquisition of snow distribution over large areas dramatically reducing the exposure to nature hazards
Porosity‐permeability evolution during simultaneous mineral dissolution and precipitation
-  3 June 2021
Key Points
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The spatial distribution of dissolution and precipitation reactions controls permeability evolution
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Simultaneous mineral reactions can increase, decrease, or result in little change in permeability
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Porosity-permeability relationships have limited predictive capability
A discrete‐domain approach to three‐phase hysteresis in porous media
-  3 June 2021
Key Points
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Constrained energy minimization in a discrete-domain model describes three-phase capillary pressure and hysteresis from pore to core scale
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Inclusion of saturation constraints leads to a variety of three-phase displacements with fluid redistribution, pressure and saturation jumps
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A fast and flexible method to calculate three-phase capillary pressure for higher-order hysteresis loops
Roughness calibration to improve flow predictions in coarse‐bed streams
-  3 June 2021
Key Points
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Predicting flow resistance using a bed grain size percentile is unreliable in shallow flows over coarse stream beds
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The alternative of calibrating roughness height in a logarithmic or variable-power resistance equation is tested using data from eight gravel/cobble/boulder reaches
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Roughness calibration at a single intermediate flow depth greatly improves predictions of velocity at higher and lower depths
Evaporation through a Dry Soil Layer: Column Experiments
-  2 June 2021
Key Points
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Evaporation with dry soil layer (DSL) investigated with laboratory experiments using soil columns under different evaporation conditions.
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Atmospheric pressure fluctuation has large effect on the evaporation with thick DSL.
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Both daily changes in solar radiation and different DSL thickness had only a limited effect on soil evaporation with a thick DSL.
The application of electromagnetic induction methods to reveal the hydrogeological structure of a riparian wetland
-  2 June 2021
Key Points
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Raw ECa values are highly correlated with the thickness of alluvial soil in a riparianwetland.
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Alluvial soil thickness predictions from multi-linear regressions were more accurate thanfrom EMI inversion methods.
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Robust predictions of hydraulic conductivity across the field site require more extensiveintrusive data.
Integrating community science research and space‐time mapping to determine depth to groundwater in a remote rural region
-  2 June 2021
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We built one spatial and two spatiotemporal models using Bayesian Maximum Entropy to estimate Depth to Groundwater in a rural region.
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The addition of probabilistic data, based on local knowledge collected through Community Science Research, improved the space-time model.
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The watershed's portion more likely to have shallow depth to groundwater increased from 13% in an average year to 56% in a La Niña year.
Aquifer Diffusivity Estimation Through Joint Inversion of the Amplitude Ratios and Time Lags of Dominant Frequencies of Fluctuating Head
-  28 May 2021
Key Points
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Aquifer diffusivity was estimated by inverting attenuation and lag of several dominant constituents in water level fluctuations induced by a tidal river.
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The attenuation and the lag of five constituents were analyzed either independently or simultaneously with the Jacob-Ferris model.
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The estimated diffusivities using the most representative well pairs have very good agreement with estimates from a pumping test.
A new model for predicting the hydraulic conductivity of unsaturated porous media
- Water Resources Research
-  513-522
-  June 1976
Evaluating the use of “goodness‐of‐fit” Measures in hydrologic and hydroclimatic model validation
- Water Resources Research
-  233-241
-  1 January 1999
Electromagnetic determination of soil water content: Measurements in coaxial transmission lines
- Water Resources Research
-  574-582
-  June 1980
Validity of Cubic Law for fluid flow in a deformable rock fracture
- Water Resources Research
-  1016-1024
-  December 1980
Response of mean annual evapotranspiration to vegetation changes at catchment scale
- Water Resources Research
-  701-708
-  1 March 2001
Effective and efficient global optimization for conceptual rainfall‐runoff models
- Water Resources Research
-  1015-1031
-  April 1992
Techniques of trend analysis for monthly water quality data
- Water Resources Research
-  107-121
-  February 1982
Accuracy of scaled GRACE terrestrial water storage estimates
- Water Resources Research
-  27 April 2012
Key Points
- We present gridded gain factors and error maps for GRACE
- Measurement and leakage errors are taken into account
- The new method does not require the use of spherical harmonics by the users
The WFDEI meteorological forcing data set: WATCH Forcing Data methodology applied to ERA‐Interim reanalysis data
- Water Resources Research
-  7505-7514
-  19 August 2014
Key Points
- Global three hourly meteorological forcing data at half-degree spatial resolution
- Covers 1979–2012
- Improvements compared to the WATCH forcing data
Water management: Current and future challenges and research directions
- Water Resources Research
-  4823-4839
-  20 June 2015
A multiresolution index of valley bottom flatness for mapping depositional areas
- Water Resources Research
-  16 December 2003
Methods and technologies to improve efficiency of water use
- Water Resources Research
-  29 July 2008
The Millennium Drought in southeast Australia (2001–2009): Natural and human causes and implications for water resources, ecosystems, economy, and society
- Water Resources Research
-  1040-1057
-  6 February 2013
Key Points
- Drivers and impacts of Australia's record drought were analyzed
- Impacts accumulated and propagated through the water cycle at different rates
- Future droughts may not be managed better than past ones.
Quantifying renewable groundwater stress with GRACE
- Water Resources Research
-  5217-5238
-  16 June 2015
Key Points:
- Renewable groundwater stress is quantified in the world's largest aquifers
- Characteristic stress regimes are defined to determine the severity of stress
- Overstressed aquifers are mainly in rangeland biomes with some croplands
The science and practice of river restoration
- Water Resources Research
-  5974-5997
-  24 July 2015
Key Points
- River restoration is a prominent area of applied water-resources science
- restoration includes connectivity, physical-biotic interactions, and history
- effective restoration requires collaboration among scientists and practitioners
Satellite Remote Sensing for Water Resources Management: Potential for Supporting Sustainable Development in Data‐Poor Regions
- Water Resources Research
-  9724-9758
-  29 October 2018
Key Points
- Satellite remote sensing is being incorporated into water resources management but is generally underutilized
- New and proposed missions have the potential to transform water resources management for sustainable development, especially in data-poor regions
- Ongoing challenges of accuracy, sampling, and continuity and capacity development need to be addressed, as well as new challenges of information volume and diversity
Optimizing multiple dam removals under multiple objectives: Linking tributary habitat and the Lake Erie ecosystem
- Water Resources Research
-  23 December 2009
Relationships between Pacific and Atlantic ocean sea surface temperatures and U.S. streamflow variability
- Water Resources Research
-  19 July 2006
A Transdisciplinary Review of Deep Learning Research and Its Relevance for Water Resources Scientists
- Water Resources Research
-  8558-8593
-  30 August 2018
Key Points
- Deep learning (DL) is transforming many scientific disciplines, but its adoption in hydrology is gradual
- DL can help tackle interdisciplinarity, data deluge, unrecognized linkages, and long-standing challenges such as scaling and equifinality
- The new field of AI neuroscience opens up many opportunities for scientists to use DL as an exploratory tool for scientific advancement