Water Resources Research http://www.agu.org/journals/wr en-us AGU http://blogs.law.harvard.edu/tech/rss webmaster@agu.org Flow over rough mobile beds: Friction factor and vertical distribution of the longitudinal mean velocity http://dx.doi.org/10.1029/2011WR011126 Rui M. L. Ferreira, Mário J. Franca, João G. A. B. Leal and António H. Cardoso Reference evapotranspiration change and the causes across the Yellow River Basin during 1957–2008 and their spatial and seasonal differences http://dx.doi.org/10.1029/2011WR010724 Weiguang Wang, Quanxi Shao, Shizhang Peng, Wanqiu Xing, Tao Yang, Yufeng Luo, Bin Yong and Junzeng Xu A field proof-of-concept of aquifer imaging using 3-D transient hydraulic tomography with modular, temporarily-emplaced equipment http://dx.doi.org/10.1029/2011WR011704 250 drawdown curves, and almost 1000 individual data points) and estimation of K at >100,000 locations; reasonable runtimes are obtained using a single multicore computer with 12 GB of RAM. The K heterogeneity results from 3DTHT are cross-validated against K characterization from a large set of partially penetrating slug tests, and found to be quite consistent. The use of portable, modular equipment for field implementation means that 3DTHT data collection can be performed (including mobilization/demobilization) within a matter of days. Likewise, use of a practical, efficient and scalable numerical modeling and inversion strategy means that computational effort is drastically reduced, such that 3-D aquifer property distributions can be estimated quickly.]]> M. Cardiff, W. Barrash and P. K. Kitanidis Effect of storm movement on flood peaks: Analysis framework based on characteristic timescales http://dx.doi.org/10.1029/2011WR011761 Yongwon Seo, Arthur R. Schmidt and Murugesu Sivapalan Tracking colloid transport in real pore structures: Comparisons with correlation equations and experimental observations http://dx.doi.org/10.1029/2012WR011847 1 × 10−3 m s−1). Simulations under selected unfavorable conditions at groundwater flow regimes indicated that temporary retention of colloids by low-flow zones in pore spaces could play a predominant role in colloid removal at low ionic strengths. As the ionic strength increases (deposition condition becomes less unfavorable), the contribution of temporary retention to overall removal decreases.]]> Zhelong Li, Dongxiao Zhang and Xiqing Li Less water: How will agriculture in Southern Mountain states adapt? http://dx.doi.org/10.1029/2011WR011057 George B. Frisvold and Kazim Konyar Influence of rock fragment coverage on soil erosion and hydrological response: Laboratory flume experiments and modeling http://dx.doi.org/10.1029/2011WR011255 100 μm) was unaffected. At long times the rock fragment cover decreased the concentration of the individual size classes in proportion to effective rainfall intensity and the area exposed to raindrops. An area-based modification of the Hairsine and Rose (H-R) soil erosion model was employed to analyze the experimental data. The H-R model predictions agreed well with the measured sediment concentrations when high rainfall intensity and low rock fragment cover were used. Predictions were instead less accurate with low rainfall intensity and high rock fragment cover. The DTM results showed that the presence of rock fragments on the soil surface led to increased soil compaction, perhaps due to higher soil moisture content (from greater infiltration) within the rock fragment-covered flumes.]]> S. Jomaa, D. A. Barry, B. C. P. Heng, A. Brovelli, G. C. Sander and J.-Y. Parlange On the distributions of seasonal river flows: Lognormal or power law? http://dx.doi.org/10.1029/2011WR011308 M. C. Bowers, W. W. Tung and J. B. Gao Intercomparing hillslope hydrological dynamics: Spatio-temporal variability and vegetation cover effects http://dx.doi.org/10.1029/2011WR011196 S. Bachmair, M. Weiler and P. A. Troch Incorporation of water vapor transfer in the JULES land surface model: Implications for key soil variables and land surface fluxes http://dx.doi.org/10.1029/2011WR011811 Raquel Garcia Gonzalez, Anne Verhoef, Pier Luigi Vidale and Isabelle Braud New 3-D flow interpolation method on moving ADCP data http://dx.doi.org/10.1029/2011WR010867 R. Tsubaki, Y. Kawahara, Y. Muto and I. Fujita Inverse groundwater modeling with emphasis on model parameterization http://dx.doi.org/10.1029/2011WR011068 George Kourakos and Aristotelis Mantoglou On estimating functional average breakthrough curve using time-warping technique and perturbation approach http://dx.doi.org/10.1029/2011WR011506 Zhiming Lu and Philip H. Stauffer On the use of spatially discrete data to compute energy and mass balance http://dx.doi.org/10.1029/2012WR012061 Ivan Lunati, Francesco Ciocca and Marc B. Parlange On the effects of seasonality on soil water balance and plant growth http://dx.doi.org/10.1029/2011WR011263 Xue Feng, Giulia Vico and Amilcare Porporato Step changes in the flood frequency curve: Process controls http://dx.doi.org/10.1029/2011WR011187 M. Rogger, H. Pirkl, A. Viglione, J. Komma, B. Kohl, R. Kirnbauer, R. Merz and G. Blöschl Catchment mixing processes and travel time distributions http://dx.doi.org/10.1029/2011WR011160 Gianluca Botter Responses of annual runoff, evaporation, and storage change to climate variability at the watershed scale http://dx.doi.org/10.1029/2011WR011444 Dingbao Wang and Negin Alimohammadi Continuous measurements of flow rate in a shallow gravel-bed river by a new acoustic system http://dx.doi.org/10.1029/2012WR012064 K. Kawanisi, M. Razaz, K. Ishikawa, J. Yano and M. Soltaniasl Effective diffusivity and mass flux across the sediment-water interface in streams http://dx.doi.org/10.1029/2011WR011148 Stanley B. Grant, Michael J. Stewardson and Ivan Marusic Comment on “Evaporation from soils under thermal boundary conditions: Experimental and modeling investigation to compare equilibrium and nonequilibrium based approaches,” by Kathleen M. Smits, Abdullah Cihan, Toshihiro Sakaki, and Tissa H. Illangasekare http://dx.doi.org/10.1029/2011WR011393 Michael D. Novak Reply to comment by Michael D. Novak on “Evaporation from soils under thermal boundary conditions: Experimental and modeling investigation to compare equilibrium and nonequilibrium based approaches” http://dx.doi.org/10.1029/2011WR011609 Kathleen M. Smits, Abdullah Cihan, Viet V. Ngo and Tissa H. Illangasekare Crash testing hydrological models in contrasted climate conditions: An experiment on 216 Australian catchments http://dx.doi.org/10.1029/2011WR011721 L. Coron, V. Andréassian, C. Perrin, J. Lerat, J. Vaze, M. Bourqui and F. Hendrickx On the risk of obtaining misleading results by pooling streamflow data for trend analyses http://dx.doi.org/10.1029/2011WR011690 D. Viviroli, B. Schädler, P. Schmocker-Fackel, M. Weiler and J. Seibert