A5061361815- Groundwater flow and contamination studies
- Advanced Numerical Methods in Computational Mathematics
- Hydrology and Watershed Management Studies
- Soil and Unsaturated Flow
- Peatlands and Wetlands Ecology
- Computational Fluid Dynamics and Aerodynamics
- Geophysical and Geoelectrical Methods
- Landslides and related hazards
- Soil Moisture and Remote Sensing
- Soil erosion and sediment transport
- Hydraulic Fracturing and Reservoir Analysis
- Reservoir Engineering and Simulation Methods
- Numerical methods in engineering
- Electromagnetic Simulation and Numerical Methods
- Model Reduction and Neural Networks
- Numerical methods for differential equations
- Advanced Mathematical Modeling in Engineering
- Meteorological Phenomena and Simulations
- Matrix Theory and Algorithms
- Electromagnetic Scattering and Analysis
- Flood Risk Assessment and Management
- Seismic Imaging and Inversion Techniques
- Geophysical Methods and Applications
- Geometric Analysis and Curvature Flows
- Coastal wetland ecosystem dynamics
University of Padua
2015-2024
Civita
2020-2023
Université de Strasbourg
2021
Centre National de la Recherche Scientifique
2021
Laboratoire Paul Painlevé
2021
Université de Lille
2021
Friedrich-Alexander-Universität Erlangen-Nürnberg
2017
Universidad Nacional Autónoma de México
1999
A distributed physically based model incorporating novel approaches for the representation of surface‐subsurface processes and interactions is presented. path‐based description surface flow across drainage basin used, with several options identifying directions, separating channel cells from hillslope cells, representing stream hydraulic geometry. Lakes other topographic depressions are identified specially treated as part preprocessing procedures applied to digital elevation data catchment....
Integrated, process-based numerical models in hydrology are rapidly evolving, spurred by novel theories mathematical physics, advances computational methods, insights from laboratory and field experiments, the need to better understand predict potential impacts of population, land use, climate change on our water resources. At catchment scale, these simulation commonly based conservation principles for surface subsurface flow solute transport (e.g., Richards, shallow water,...
There are a growing number of large-scale, complex hydrologic models that capable simulating integrated surface and subsurface flow. Many coupled to land-surface energy balance models, biogeochemical ecological process atmospheric models. Although they being increasingly applied for prediction environmental understanding, very little formal verification and/or benchmarking these has been performed. Here we present the results an intercomparison study seven surface-subsurface based on series...
Picard iteration is a widely used procedure for solving the nonlinear equation governing flow in variably saturated porous media. The method simple to code and computationally cheap, but has been known fail or converge slowly. Newton more complex expensive (on per‐iteration basis) than Picard, as such not received very much attention. Its robustness higher rate of convergence, however, make it an attractive alternative method, particularly strongly problems. In this paper schemes are...
Abstract Emphasizing the physical intricacies of integrated hydrology and feedbacks in simulating connected, variably saturated groundwater‐surface water systems, Integrated Hydrologic Model Intercomparison Project initiated a second phase (IH‐MIP2), increasing complexity benchmarks first phase. The models that took part intercomparison were ATS, Cast3M, CATHY, GEOtop, HydroGeoSphere, MIKE‐SHE, ParFlow. IH‐MIP2 included tilted v‐catchment with 3‐D subsurface; superslab case expanding slab an...
A sequential data assimilation procedure based on the ensemble Kalman filter (EnKF) is introduced and tested for a process‐based numerical model of coupled surface subsurface flow. The three‐dimensional Richards equation variably saturated porous media diffusion wave approximation overland channel one‐dimensional soil column experiment tilted v‐catchment test case are presented. preliminary analysis scheme undertaken in order to validate implementation by comparison with published results...
Abstract This work addresses the signatures embedded in planform geometry of meandering rivers consequent to formation floodplain heterogeneities as river bends migrate. Two geomorphic features are specifically considered: scroll bars produced by lateral accretion point at convex banks and oxbow lake fills neck cutoffs. The sedimentary architecture these units depends on type amount sediment, controls bank erodibility impinges them, favoring or contrasting migration. numerically generated...
Wetlands are characterized by extremely high biodiversity and primary productivity (comparable to tropical rain forests), provide critical habitats for rare endangered vegetation animal species, mediate the effects of floods action sea on coast. A deep understanding wetland system functioning cannot be acquired simply reducing its dynamics a collection parts but requires explicit description physical ecological processes as fully interacting components. In fact, complex spatial...
Water resources systems management often requires complex mathematical models whose use may be computationally infeasible for many advanced analyses, e.g., optimization, data assimilation, model uncertainty, etc. The computational demand of these analyses can reduced by approximating the with a simpler model. Proper Orthogonal Decomposition (POD) is an efficient reduction technique based on projection original onto subspace generated full‐model snapshots. In order to implement this method,...
In the last decades we have observed a rapid growth of extreme hydrological events, such as floods and rock/debris or mud flows affecting more frequently our lives. The detailed physical description these viscous fluids is fundamental to understand caused stress on possible flood control structures, levees, dams, check dams. However, its simulation through high fidelity physics-based computational models, using for example Material Point Method (MPM), extremely computationally demanding,...
A finite volume approach is developed for the solution of contaminant transport equation in groundwater. By defining a triangular control over which dependent variable governing averaged, scheme combines flexibility handling complex geometries intrinsic to element methods with simplicity difference techniques. High‐resolution upwind schemes are employed discretization advective terms. The technique based on concept “monotone interpolation” ensure monotonicity preserving property scheme, and...
Peatlands respond to natural hydrologic cycles of precipitation and evapotranspiration with reversible deformations due variations water content in both the unsaturated saturated zone. This phenomenon results short‐term vertical displacements soil surface that superimpose irreversible long‐term subsidence naturally occurring drained cropped peatlands because bio‐oxidation organic matter. These processes cause changes peat structure, particular, density void ratio. The consequential...
Abstract Integrated surface‐subsurface hydrological models (ISSHMs) are well established numerical tools to investigate water flow and contaminant transport processes over a wide range of spatial temporal scales. However, their ability correctly reproduce the response systems natural anthropogenic forcing depends largely on accuracy model parameterization, including level detail in representation bedrock. This latter is typically incorporated some way via bottom boundary domain. Issues...
We illustrate a case study of saline tracer test in shallow, highly heterogeneous aquifer, monitored by means surface time-lapse ERT. The was aimed at identifying the system’s hydraulic properties. Some expected limitations method — particularly caused strong decrease ERT resolution with depth and consequent problems mass balance moment calculation could be partly balanced use direct measurements groundwater electrical conductivity concentration one selected location. vast heterogeneity...
[1] Land subsidence in drained cultivated peatlands is responsible for a number of serious environmental concerns and economical problems at both the local global scale. In low-lying coastal areas it enhances risk flooding, saltwater contamination shallow aquifers, maintenance costs systems that help keep farmland drained. Since major consequence bio-oxidation soil organic fraction upper aerated zone, cropped temperate tropic regions are important sources CO2 into atmosphere. A 4-year long...