The importance of observations on fluxes to constrain ground water model calibration

Vassena, Chiara; Durante, C.; Giudici, M.; Ponzini, Giansilvio

doi:10.1016/j.pce.2008.01.004

Cited by 11 publications

(18 citation statements)

References 9 publications

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“…Recently Marcotte (2005, 2006) applied the method, with some modifications, in the realm of the finite elements technique and also using transient head data, and Ponzini et al (2007) clarified some peculiar properties of the CMM. Applications of the CMM to regional aquifers were presented by Beatrizzotti et al (1983), Pasquier and Marcotte (2005), Benoit et al (2005); Vassena et al (2008) applied the method to the southern part of the aquifer system studied in this paper.…”

Section: The Simulation Modelsmentioning

confidence: 93%

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Modeling water resources of a highly irrigated alluvial plain (Italy): calibrating soil and groundwater models

et al. 2012

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Modern and effective water management in large alluvial plains that have intensive agricultural activity requires the integrated modeling of soil and groundwater. The models should be complex enough to properly simulate several, often non-linear, processes, but simple enough to be effectively calibrated with the available data. An operative, practical approach to calibration is proposed, based on three main aspects. First, the coupling of two models built on wellvalidated algorithms, to simulate (1) the irrigation system and the soil water balance in the unsaturated zone and (2) the groundwater flow. Second, the solution of the inverse problem of groundwater hydrology with the comparison model method to calibrate the model. Third, the use of appropriate criteria and cross-checks (comparison of the calibration results and of the model outputs with hydraulic and hydrogeological data) to choose the final parameter sets that warrant the physical coherence of the model. The approach has been tested by application to a large and intensively irrigated alluvial basin in northern Italy.

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Section: The Simulation Modelsmentioning

confidence: 93%

“…The CMM computes approximated equivalent transmissivity values which also depend upon the seed T (CM) ; a method for a suitable choice of T (CM) is shown in appendix A.2 of Vassena et al (2008). Concerning the stability of the CMM solution, it is important to stress that Eq.…”

Section: The Simulation Modelsmentioning

confidence: 99%

Modeling water resources of a highly irrigated alluvial plain (Italy): calibrating soil and groundwater models

et al. 2012

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“…Further modifications were proposed by Ponzini and Crosta [20], Ponzini et al [26], Pasquier and Marcotte [27], Ponzini et al [28]. The CMM was applied to alluvial aquifers in Italy [14,16,21], Switzerland [22] and Canada [23,29,30] and to a carbonatic aquifer in southern Italy [17,31].…”

Section: Inverse Modeling With the Comparison Model Methodsmentioning

confidence: 99%

“…Within this background, the first goal of this paper is to propose a code, YAGMod (yet another groundwater flow model), developed in Fortran90, for the simulation of constant-density, groundwater flow under stationary conditions, which is the extension of the codes developed by our research team over the years [7][8][9][10][11][12][13][14][15][16][17]. YAGMod is based on a conservative finite difference scheme for stationary conditions and is oriented to the simulation of flow in saturated media.…”

Section: Introductionmentioning

confidence: 99%

“…This method was originally proposed by Scarascia and Ponzini [18], successively developed by Ponzini and Lozej [19] and cast in a more formal mathematical framework by Ponzini and Crosta [20]. The CMM has been applied and implemented with success to study 2D hydraulic flow in regional aquifers [14,16,17,[21][22][23], and therefore, for the moment, its implementation within YAGMod covers these kinds of systems only.…”

Section: Introductionmentioning

confidence: 99%

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Modeling Groundwater Flow in Heterogeneous Porous Media with YAGMod

et al. 2015

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Abstract:Modeling flow and transport in porous media requires the management of complexities related both to physical processes and to subsurface heterogeneity. A thorough approach needs a great number of spatially-distributed phenomenological parameters, which are seldom measured in the field. For instance, modeling a phreatic aquifer under high water extraction rates is very challenging, because it requires the simulation of variably-saturated flow. 3D steady groundwater flow is modeled with YAGMod (yet another groundwater flow model), a model based on a finite-difference conservative scheme and implemented in a computer code developed in Fortran90.YAGMod simulates also the presence of partially-saturated or dry cells. The proposed algorithm and other alternative methods developed to manage dry cells in the case of depleted aquifers are analyzed and compared to a simple test. Different approaches yield different solutions, among which, it is not possible to select the best one on the basis of physical arguments. A possible advantage of YAGMod is that no additional non-physical parameter is needed to overcome the numerical difficulties arising to handle drained cells. YAGMod also includes a module that allows one to identify the conductivity field for a phreatic aquifer by solving an inverse problem with the comparison model method.

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Effects of different boundary conditions on the simulation of groundwater flow in a multi-layered coastal aquifer system (Taranto Gulf, southern Italy)

et al. 2017

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The importance of observations on fluxes to constrain ground water model calibration

Cited by 11 publications

References 9 publications

Modeling water resources of a highly irrigated alluvial plain (Italy): calibrating soil and groundwater models

Modeling water resources of a highly irrigated alluvial plain (Italy): calibrating soil and groundwater models

Modeling Groundwater Flow in Heterogeneous Porous Media with YAGMod

Effects of different boundary conditions on the simulation of groundwater flow in a multi-layered coastal aquifer system (Taranto Gulf, southern Italy)

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