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Water Resources Research

Cover image for Vol. 48 Issue 2

February 2012

Volume 48, Issue 2

  1. Commentaries

    1. Top of page
    2. Commentaries
    3. Regular Article
    1. You have free access to this content
      Replies to comments on “A revisit of drawdown behavior during pumping in unconfined aquifers” by Neuman and Mishra

      T.-C. J. Yeh, D. Mao, L. Wan, C.-H. Lee, J.-C. Wen and W. Lu

      Article first published online: 3 FEB 2012 | DOI: 10.1029/2011WR011153

      Key Points

      • Transition of water release mechanisms
      • Heterogeneous, variably saturated flow equation
      • Unconfined aquifers
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      Comments on “A revisit of drawdown behavior during pumping in unconfined aquifers” by D. Mao, L. Wan, T.-C. J. Yeh, C.-H. Lee, K.-C. Hsu, J.-C. Wen, and W. Lu

      Shlomo P. Neuman and Phoolendra K. Mishra

      Article first published online: 3 FEB 2012 | DOI: 10.1029/2011WR010785

      Key Points

      • One must not draw general conclusions from one (numerical) experiment
      • Conclusions drawn by Mao et al on such basis are in part invalid
      • Mao et al. ignore and/or mischaracterize some relevant previous WRR papers
  2. Regular Article

    1. Top of page
    2. Commentaries
    3. Regular Article
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      Prediction and uncertainty of free convection phenomena in porous media

      Yueqing Xie, Craig T. Simmons, Adrian D. Werner and Hans-J. G. Diersch

      Article first published online: 29 FEB 2012 | DOI: 10.1029/2011WR011346

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      Key Points

      • The prediction issue of free convection was comprehensively reviewed
      • A quantitative evaluation was conducted to assist in elucidation
      • A paradigm change is significantly proposed to change our way of thinking
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      An assessment of surface soil temperature products from numerical weather prediction models using ground-based measurements

      Thomas R. H. Holmes, Thomas J. Jackson, Rolf H. Reichle and Jeffrey B. Basara

      Article first published online: 28 FEB 2012 | DOI: 10.1029/2011WR010538

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      Key Points

      • An assessment of NWP temperature products in preparation for SMAP satellite mission
      • GMAO and ECMWF provide temperature fields with an RMSE below 1.8 K at 6am
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      Application of ground-penetrating radar to measure near-saturation soil water content in peat soils

      Andrew D. Parsekian, Lee Slater and Daniel Giménez

      Article first published online: 28 FEB 2012 | DOI: 10.1029/2011WR011303

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      Key Points

      • We show a new method for varying water content precisely near saturation
      • Calibrated models can improve geophysical estimates of water content in peat
      • GPR is used to estimate water content in near-saturation peat
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      Relative permeability and trapping of CO2 and water in sandstone rocks at reservoir conditions

      Samuel C. M. Krevor, Ronny Pini, Lin Zuo and Sally M. Benson

      Article first published online: 28 FEB 2012 | DOI: 10.1029/2011WR010859

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      Key Points

      • CO2/water rel-perm and residual trapping are measured in 4 sandstones
      • Characteristic curves are consistent with water-wet rocks
      • Residual CO2 trapping is confirmed as significant
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      Influence of soil structure and root water uptake strategy on unsaturated flow in heterogeneous media

      A. Kuhlmann, I. Neuweiler, S. E. A. T. M. van der Zee and R. Helmig

      Article first published online: 28 FEB 2012 | DOI: 10.1029/2011WR010651

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      Key Points

      • Standard root uptake models in heterogeneous media can lead to local wilting
      • Compensating RWU strategies attenuate, but do not eliminate local wilting
      • In the wet, influence of heterogeneity on head is similar with or without RWU
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      Controlled CO2 injection into heterogeneous geologic formations for improved solubility and residual trapping

      Hossein Shamshiri and Behnam Jafarpour

      Article first published online: 24 FEB 2012 | DOI: 10.1029/2011WR010455

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      Key Points

      • Optimization method for improved sweep efficiency in geologic CO2 storage system
      • Enhancement and accelaration of residual and solubility trapping
      • Introduction of pseudo wells for optimization of injection rate allocation
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      A modified surface energy balance algorithm for land (M-SEBAL) based on a trapezoidal framework

      Di Long and Vijay P. Singh

      Article first published online: 23 FEB 2012 | DOI: 10.1029/2011WR010607

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      Key Points

      • SEBAL is of a rectangular framework of the relationship between fc and Trad
      • M-SEBAL substitutes a trapezoidal framework for the rectangular framework in SEBAL
      • M-SEBAL reduces subjectivity and ambiguity in ET estimation in SEBAL
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      Using high-resolution distributed temperature sensing to quantify spatial and temporal variability in vertical hyporheic flux

      Martin A. Briggs, Laura K. Lautz, Jeffrey M. McKenzie, Ryan P. Gordon and Danielle K. Hare

      Article first published online: 23 FEB 2012 | DOI: 10.1029/2011WR011227

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      Key Points

      • Shallow hyporheic flux hot spots organize by streambed morphologic unit
      • Flux may both increase and decrease through time within the same system
      • High resolution fiber-optic heat tracing is a valuable tool to the community
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      Interannual variability of snowmelt in the Sierra Nevada and Rocky Mountains, United States: Examples from two alpine watersheds

      Steven M. Jepsen, Noah P. Molotch, Mark W. Williams, Karl E. Rittger and James O. Sickman

      Article first published online: 23 FEB 2012 | DOI: 10.1029/2011WR011006

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      Key Points

      • Snow is more spatially variable at the continental site than maritime site
      • Turbulent fluxes are more variable at the continental site than maritime site
      • Lag of streamflow behind snowmelt is associated with hydrogeology and melt rate
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      Effect of spatial concentration fluctuations on effective kinetics in diffusion-reaction systems

      A. M. Tartakovsky, P. de Anna, T. Le Borgne, A. Balter and D. Bolster

      Article first published online: 21 FEB 2012 | DOI: 10.1029/2011WR010720

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      Key Points

      • We studied the effect of fluctuations on non-linear reactions
      • We found and explained change in scaling behavior of the concentrations
      • Fluctuations decrease the rate of chemical reactions
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      Geostatistical analysis of centimeter-scale hydraulic conductivity variations at the MADE site

      Geoffrey C. Bohling, Gaisheng Liu, Steven J. Knobbe, Edward C. Reboulet, David W. Hyndman, Peter Dietrich and James J. Butler Jr

      Article first published online: 21 FEB 2012 | DOI: 10.1029/2011WR010791

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      Key Points

      • Direct-push tools provide information on hydraulic conductivity variations
      • Direct-push techniques are much more efficient than well-based techniques
      • Direct-push and well-based techniques give similar results at a well known site
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      A topography-based scaling algorithm for soil hydraulic parameters at hillslope scales: Field testing

      Raghavendra B. Jana and Binayak P. Mohanty

      Article first published online: 18 FEB 2012 | DOI: 10.1029/2011WR011205

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      Key Points

      • Soil hydraulic parameters aggregated from 30 m to 1 km extents
      • Upscaling algorithm tested under different hydroclimates and soil complexities
      • Simulated and observed soil moisture matched across topography and landcover
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      Pore-scale simulation of mixing-induced calcium carbonate precipitation and dissolution in a microfluidic pore network

      Hongkyu Yoon, Albert J. Valocchi, Charles J. Werth and Thomas Dewers

      Article first published online: 18 FEB 2012 | DOI: 10.1029/2011WR011192

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      Key Points

      • Pore-scale model of coupled fluid flow, reactive transport, and CaCO3 reaction
      • Mechanistical evaluation of precipitation and dissolution of CaCO3
      • Coupled effects of diffusion, hydrodynamics, and reaction
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      A comparative study of multiple approaches to soil hydraulic parameter scaling applied at the hillslope scale

      Raghavendra B. Jana and Binayak P. Mohanty

      Article first published online: 18 FEB 2012 | DOI: 10.1029/2010WR010185

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      Key Points

      • Four different algorithms to upscale soil hydraulic parameters were compared
      • Equivalence of coarse scale parameters tested in a watershed
      • Better performance by inclusion of topography in hydraulic parameter scaling
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      A phenomenological model for the flow resistance over submerged vegetation

      Alexandra G. Konings, Gabriel G. Katul and Sally E. Thompson

      Article first published online: 18 FEB 2012 | DOI: 10.1029/2011WR011000

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      Key Points

      • A novel approach for Manning's n in streams with submerged vegetation is derived
      • The model uses a description of momentum transfer via ejections and sweeps
      • The model is independent of plant spacing and usable for heterogeneous canopies
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      On topographic controls of soil hydraulic parameter scaling at hillslope scales

      Raghavendra B. Jana and Binayak P. Mohanty

      Article first published online: 18 FEB 2012 | DOI: 10.1029/2011WR011204

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      Key Points

      • Influence of topographic variations on effective upscaled soil hydraulics
      • Effective upscaled parameters captured equivalent flows and states
      • Different topographic features inherit characteristics upscaling thresholds
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      Improved methods for daily streamflow estimates at ungauged sites

      Chang Shu and Taha B. M. J. Ouarda

      Article first published online: 18 FEB 2012 | DOI: 10.1029/2011WR011501

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      Key Points

      • A regression based logarithmic interpolation method for FDC estimation
      • Spatial interpolation algorithm to obtain daily streamflow estimates
      • Methods developed in the paper show siginificant better performances
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      Projections of future water resources and their uncertainty in a glacierized catchment in the Swiss Alps and the subsequent effects on hydropower production during the 21st century

      David Finger, Georg Heinrich, Andreas Gobiet and Andreas Bauder

      Article first published online: 18 FEB 2012 | DOI: 10.1029/2011WR010733

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      Key Points

      • Projected future water resources will affect hydropower production
      • Projected changes are greater than the modeling uncertainty
      • New integrative modeling approach (climate, hydrology, glaciers and hydropower)
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      Spectral induced polarization of shaly sands: Influence of the electrical double layer

      A. Revil

      Article first published online: 16 FEB 2012 | DOI: 10.1029/2011WR011260

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      Key Points

      • Induced polarization of shaly sands is controlled by the Stern layer
      • The quadrature conductivity depends on salinity and CEC
      • The model accounts for temperature and saturation
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      Salt marsh ecohydrological zonation due to heterogeneous vegetation–groundwater–surface water interactions

      Kevan B. Moffett, Steven M. Gorelick, Robert G. McLaren and Edward A. Sudicky

      Article first published online: 15 FEB 2012 | DOI: 10.1029/2011WR010874

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      Key Points

      • Variety of salt marsh root zone environments much greater than supposed
      • Heterogeneous plant and sediment hydraulics physically organize salt marshes
      • First realistic 3D model of coupled surface-groundwater salt marsh hydrology
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      Stochastic simulation of nonstationary oscillation hydroclimatic processes using empirical mode decomposition

      T. Lee and T. B. M. J. Ouarda

      Article first published online: 15 FEB 2012 | DOI: 10.1029/2011WR010660

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      Key Points

      • Introduction of a stochastic simulation technique reproducing the NSO processes
      • Test of the proposed approach with synthetic datasets
      • Application of the proposed approach to a climate index and to streamflow data
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      Modeling effects of floods on streambed hydraulic conductivity and groundwater-surface water interactions

      Scott C. Simpson and Thomas Meixner

      Article first published online: 15 FEB 2012 | DOI: 10.1029/2011WR011022

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      Key Points

      • Preferential transport of fine bed sediments can increase hydraulic conductivity
      • Deposition of fine material can reduce bed conductivity and river-aquifer fluxes
      • A temporally varying bed can have long-lasting impacts on water composition
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      Attribution of water resources evolution in the highly water-stressed Hai River Basin of China

      Yangwen Jia, Xiangyi Ding, Hao Wang, Zuhao Zhou, Yaqin Qiu and Cunwen Niu

      Article first published online: 14 FEB 2012 | DOI: 10.1029/2010WR009275

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      Key Points

      • Attribution of observed water resource changes
      • Climate change and human activity
      • Couple climate model with hydrological model
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      Contaminant discharge and uncertainty estimates from passive flux meter measurements

      Harald Klammler, Kirk Hatfield, Joana Angélica Guimarães da Luz, Michael D. Annable, Mark Newman, Jaehyun Cho, Aaron Peacock, Valerie Stucker, James Ranville, Steven A. Cabaniss and P. S. C. Rao

      Article first published online: 14 FEB 2012 | DOI: 10.1029/2011WR010535

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      Key Points

      • Deliberate implementation of stochastic simulation for discharge estimation
      • Use effective number of independent data for simple approximations
      • Two pfm field examples for TCE and uranium plumes demonstrate results
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      Do internal flow measurements improve the calibration of rainfall-runoff models?

      J. Lerat, V. Andréassian, C. Perrin, J. Vaze, J. M. Perraud, P. Ribstein and C. Loumagne

      Article first published online: 14 FEB 2012 | DOI: 10.1029/2010WR010179

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      Key Points

      • Multi-site calibration does not perform better than single-site calibration
      • Performance are equivalent at the catchment outlet and at interior points
      • Multi-site calibration does not allow to better identify distributed parameters
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      Solute transport and retention in three-dimensional fracture networks

      Vladimir Cvetkovic and Andrew Frampton

      Article first published online: 11 FEB 2012 | DOI: 10.1029/2011WR011086

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      Key Points

      • Transport resistance is a key random variable for solute transport in rocks
      • Low values of transport resistance can be predicted reasonably well
      • Assumed hydraulic law will have a large impact on effective representation
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      Solute transport in divergent radial flow with multistep pumping

      Yiming Chen, Chunhui Lu and Jian Luo

      Article first published online: 11 FEB 2012 | DOI: 10.1029/2011WR010692

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      Key Points

      • Transient pumping problems can be transformed into a steady-state flow problem
      • Cumulative injected flow domain is very efficient for transient pumping
      • Linear convolution can be applied on the cumulative injected flow domain
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      Monitoring groundwater storage changes in the highly seasonal humid tropics: Validation of GRACE measurements in the Bengal Basin

      M. Shamsudduha, R. G. Taylor and L. Longuevergne

      Article first published online: 10 FEB 2012 | DOI: 10.1029/2011WR010993

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      Key Points

      • Validates satellite measurements of groundwater storage changes in the humid tropics
      • Evaluates the ability of various GRACE products to trace groundwater storage changes
      • Demonstrates the critical but often ignored contribution of surface water storage
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      Diffusivity of rocks: Gas diffusion measurements and correlation to porosity and pore size distribution

      Sheng Peng, Qinhong Hu and Shoichiro Hamamoto

      Article first published online: 9 FEB 2012 | DOI: 10.1029/2011WR011098

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      Key Points

      • Gas diffusivity measured for consolidated rocks and construction materials
      • Archie's law describes diffusivity-porosity relation with different m values
      • Relations between diffusivity and pore-size distribution proposed
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      Unified measurement system with suction control for measuring hysteresis in soil-gas transport parameters

      Md Abdur Rouf, Shoichiro Hamamoto, Ken Kawamoto, Toshihiro Sakaki, Toshiko Komatsu and Per Moldrup

      Article first published online: 8 FEB 2012 | DOI: 10.1029/2011WR010615

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      Key Points

      • Development and verification of unified measurement system with suction control
      • Hysteresis of SWCC and gas transport parameters
      • Effects of trapped air content on gas transport parameters
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      Sediment dynamics in a sand bed stream with riparian vegetation

      Sam Gorrick and José F. Rodríguez

      Article first published online: 7 FEB 2012 | DOI: 10.1029/2011WR011030

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      Key Points

      • Convective fluxes of suspended sediment are dominant in shaping the streambed
      • Width variations and curvature affect transverse fluxes of sediment
      • Riparian vegetation interfere with convective fluxes and straightened the reach
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      Predicting natural base-flow stream water chemistry in the western United States

      John R. Olson and Charles P. Hawkins

      Article first published online: 4 FEB 2012 | DOI: 10.1029/2011WR011088

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      Key Points

      • We develop data describing chemical and physical attributes of bedrock geology
      • Empirical models successfully predict stream chemistry from environmental data
      • Geochemistry > temperature > precipitation in predicting stream chemistry
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      Flow and turbulence redistribution in a straight artificial pool

      Bruce J. MacVicar and Colin D. Rennie

      Article first published online: 2 FEB 2012 | DOI: 10.1029/2010WR009374

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      Key Points

      • Lateral flow convergence in pools is linked with flow deceleration
      • A simple 2D bedform generates 3D hydrodynamic effects
      • Alt. theories of pool formation are subcomponents of convective acceleration
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      Tidal influence on seawater intrusion in unconfined coastal aquifers

      Woei Keong Kuan, Guangqiu Jin, Pei Xin, Clare Robinson, Badin Gibbes and Ling Li

      Article first published online: 2 FEB 2012 | DOI: 10.1029/2011WR010678

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      Key Points

      • Tide-induced seawater circulation may reduce the extent of seawater intrusion
      • Freshwater discharge zone shifts seaward due to tide-induced seawater circulation
      • Glover solution is modified to account for the tidal effect on the saltwater wedge
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      Bayesian assessment of the expected data impact on prediction confidence in optimal sampling design

      P. C. Leube, A. Geiges and W. Nowak

      Article first published online: 1 FEB 2012 | DOI: 10.1029/2010WR010137

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      Key Points

      • Non-linear optimization scheme that outmatches conventional linear methods
      • The flexibility allow to handle arbitrary goal-oriented formulations of OD
      • The method allows the combination with new development in handling uncertainty

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