Showing papers in "Advances in Water Resources in 2017"

TL;DR: The Projection-based Embedded Discrete Fracture Model (pEDFM) as mentioned in this paper constructs independent grids for the matrix and fracture domains, and delivers strictly conservative velocity fields.

TL;DR: A review of the effect of factors that influence flow and salt transport in STEs, evaluates current understanding on the interactions between these influences, and synthesizes understanding of drivers of nutrient, carbon, greenhouse gas, metal and organic contaminant fluxes to the ocean.

TL;DR: This work uses a deep neural network of the variational autoencoder type to construct a parametric low-dimensional base model parameterization of complex binary geological media and finds that the dimensionality reduction (DR) approach outperforms principle component analysis (PCA), optimization-PCA, and discrete cosine transform (DCT) DR techniques for unconditional geostatistical simulation of a channelized prior model.

TL;DR: In this paper, the authors developed an integrated model analysis framework and tool called WEFO to predict how to satisfy WEF demands based on model inputs representing productions costs, socioeconomic demands, and environmental controls.

TL;DR: Singh et al. as discussed by the authors presented an approach to measure the in-situ contact angle between immiscible fluids, applied to segmented pore-scale X-ray images.

TL;DR: In this paper, a two-layer transient groundwater model is used to identify hot-spots of groundwater depletion in both confined and unconfined aquifer systems, where the authors derived new estimates of the distribution and thickness of confining layers.

TL;DR: In this paper, the authors provide a synthesis of four decades of research and development on the passive and active microwave soil moisture retrieval algorithms, which are associated with passive sensors using the radiometer brightness temperatures, while active sensors use the radar backscatter measurements to retrieve soil moisture.

TL;DR: A novel reference dataset is generated to quantify the impact of numerical solvers, boundary conditions, and simulation platforms on permeability of microstructures ranging from idealized pipes to digital rocks and finds that more stringent convergence criteria can improve solver accuracy but at the expense of longer computation time.

TL;DR: The results suggest that the classifier based on the Geomorphic Flood Index, is the most suitable to detect the flood-prone areas in data-scarce regions and for large-scale applications, providing good accuracies with low requirements in terms of data and computational costs.

TL;DR: In this article, a projection-based extension of EDFM (pEDFM) is proposed to resolve the limitations associated with EDFMs for multiphase flow problems.

TL;DR: This review aims at helping hydrogeologists and hydrogeophysicists to identify suitable approaches for UQ that can be applied and further developed to their specific needs and considers hydrogeophysical inversion, where petrophysical uncertainty is often ignored leading to overconfident parameter estimation.

TL;DR: In this paper, five physical processes, namely, urbanization, local temperature changes, global warming, El Nino-Southern Oscillation (ENSO) cycle and Indian Ocean Dipole (IOD), are used as covariates.

TL;DR: In this paper, a case-specific assessment of green infrastructure performance in mitigating flood hazard in small urban catchments is presented, where the urban hydrologic modeling tool (MUSIC) is coupled with a fine resolution 2D hydrodynamic model (BreZo) to test to what extent retrofitting an urban watershed with GI, rainwater tanks and infiltration trenches in particular, can propagate flood management benefits downstream and support intuitive flood hazard maps useful for communicating and planning with communities.

TL;DR: In this paper, the authors used geophysics to characterize spatial and temporal variability in the subsurface region proximal to SW bodies, the GW-SW interface, which is crucial as it actively regulates the transfer of nutrients, contaminants, and water between GW systems and SW environments.

TL;DR: In this article, a discrete fracture model on the basis of a cell-centered finite volume scheme with multi-point flux approximation (MPFA) is presented, where fractures are included in a d-dimensional computational domain as (d − 1 )-dimensional entities living on the element facets, which requires the grid to have the element facet aligned with the fracture geometries.

TL;DR: In this paper, large-eddy simulations are used to gain insight into the effects of trees on turbulence, aerodynamic parameters, and momentum transfer rates characterizing the atmosphere within and above a real urban canopy.

TL;DR: In this article, the spontaneous imbibition behavior, three-dimensional fluid occupancy maps, and in-situ wettability at the nano scale in five ultra-tight and shale reservoir rock samples were investigated.

TL;DR: In this article, a hybrid DEM-SPH model is presented to simulate landslide and to reproduce its generated surge waves, which consists of discrete element method for solid phase and smoothed particle hydrodynamics (SPH) for fluid phase as well as drag force and buoyancy for solid-fluid interaction.

TL;DR: In this article, a multi-scale synchrotron-based X-ray microtomographic dataset of residually trapped air after gravity-driven brine imbibition was acquired for three samples with differing pore topologies and morphologies; image volumes were reconstructed with voxel sizes from 4.44 µm down to 0.64 µm.

TL;DR: In this paper, the authors present an overview of how microwave remote sensing of soil moisture has improved in terms of the design of sensors and their accuracy for retrieving soil moisture, and they also carried out inter-satellite comparisons to study the roles of sensor design and algorithms on the retrieval accuracy.

TL;DR: The Lagrangian particle tracking (PT) method is a standard way to simulate the transport of conservative or sorbing solutes as mentioned in this paper, which is the main advantage of the PT method when simulating advection.

TL;DR: In this article, anisotropic effects are introduced to cope with two-dimensional shallow water models and particularly with the subgrid modeling technique, where regular patterns, which are found in both natural and man-modified environments, are strongly interwoven with free surface flows.

TL;DR: In this article, a new model formulation called the Dual Integral Porosity (DIP) model is presented and examined analytically and computationally with a series of benchmark tests.

TL;DR: The results indicate that all implemented filters improve the estimation of water storage simulations of W3RA, and the best results are obtained using two versions of deterministic EnKF, i.e. the Square Root Analysis scheme and the Ensemble Square Root Filter.

TL;DR: In this article, a numerical manifold method (NMM) model was developed for fully coupled analysis of hydro-mechanical (HM) processes in porous rock masses with discrete fractures, where fracture deformation and fracture fluid flow within a permeable and deformable porous rock matrix were rigorously considered.

TL;DR: In this paper, the authors proposed a new way to parameterize pore-networks and outlined future improvements to create a new class of pore network models without pore shape simplifications.

TL;DR: In this paper, the authors investigate tracer transport on random discrete fracture networks that are characterized by the statistics of the fracture geometry and hydraulic conductivity and quantify this evolution by a Markov model for particle velocities that are equidistantly sampled along trajectories.

TL;DR: In this paper, a multi-stakeholder Many-Objective Robust Decision Making (MORDM) framework is proposed to better account for deeply uncertain factors when identifying cooperative drought management strategies.

TL;DR: In this paper, an integrated methodology based on the Water-Energy-Food Nexus is proposed to evaluate the multi-dimensional implications of irrigation practices in Mediterranean area, showing significant water scarcity problems, further exacerbated by the crucial economic role of agricultural production.

TL;DR: In this paper, x-ray microtomography experiments were performed to investigate the impact of surfactants and micro-emulsions on the mobilization and solubilization of NAPL in heterogeneous rocks.