This is the second of a three-part series recorded by John Doherty. The first video is recalling what you once knew. The second video will be focussed on highly-parameterised inversion and the third video will be on uncertainty analysis. These videos will give you a good understanding of the mathematical concepts that underpin model calibration […]
Highly-parameterised inversion Read More »
This is the first of a three-part series recorded by John Doherty. The first video is recalling what you once knew. The second video will be focussed on highly-parameterised inversion and the third video will be on uncertainty analysis.These videos will give you a good understanding of the mathematical concepts that underpin model calibration and
Recalling what you once knew Read More »
Any groundwater model is riddled with imperfections. Do these compromise its decision-support utility? Linear analysis can answer this question.
Worked example: Exploring model defects using linear analysis Read More »
This tutorial demonstrates several options for spatial parameterization of linear and polylinear features. In a groundwater model, these may represent entities such as streams, rivers, faults, or fracture networks. The hydraulic properties of these features may vary along their lengths. If this variability is relevant for a prediction of interest, then its representation in a
SEGLISTS: Interpolation along linear features Read More »
PLPROC allows a modeller to create and manipulate parameters that inform hydraulic properties that are represented in a numerical model. In doing this, PLPROC supports PEST in facilitating model-based decision-support which enshrines the principle that a model should encapsulate what we know and quantify what we do not. This tutorial offers a gentle introduction to
PLPROC: a simple pilot point example Read More »
This tutorial shows you how to extract data from MODFLOW 6 input and/or output files, and record that data in files that are easily read by visualisation packages such as PARAVIEW, GIS packages such as QGIS, and display packages such as SURFER. Utilities supplied with the PEST suite can perform similar tasks for other versions
Model Visualisation and Display Read More »
PLPROC is a member of the PEST suite. Its primary use is for pilot points parameterization of models that use both structured and unstructured grids. This tutorial offers a quick overview of PLPROC in pilot points parameterization of a MODFLOW-USG model. Other utility programs from the PEST suite are also demonstrated. These translate data that
Though it has nothing to do with parameter estimation, LUMPREM is a member of the PEST suite; it can be downloaded from the PEST web pages. LUMPREM is a simple, lumped-parameter recharge model. It generates time series of groundwater recharge using daily rainfall and potential evaporation as inputs. It can also be used to simulate
LUMPREM: a Transient Recharge Model Read More »
On 28th October, 2020 GMDSI hosted a discussional webinar whose purpose was to address tensions which sometimes arise between modellers and hydrogeologists If you would like to watch the webinar, click here. After the webinar, some of our listeners had their say – you can read their comments or contribute your own at the bottom of
Seeking Common Ground: Modellers and Geologists Read More »
We are calling this our “Christmas Cracker” webinar for two good reasons. Firstly, it was held just 10 days before Christmas. Secondly, it was entertaining, and easy to listen to.
GMDSI is managed by the National Centre for Groundwater Research and Training (NCGRT) and administered by Flinders University.
