Non-Linear Uncertainty Analysis
In contrast to linear uncertainty analysis, non-linear methods do not suffer from the limitation of assuming a linear relationship between model predictions and model parameters.
May 31, 2021
News
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Featured
Covariance Matrices: The PPCOV Suite
A variance-covariance matrix, often referred to as a covariance matrix, is a square matrix that provides covariances between pairs of elements of a random vector.
May 19, 2021
Data Worth Analysis
The present tutorial addresses the ability (or otherwise) of yet-ungathered data to reduce the uncertainties of decision-critical predictions using linear analysis utilities from the PEST
May 10, 2021
Linear Uncertainty Analysis
Linear uncertainty analysis is also known as “first order second moment” (or “FOSM”) analysis. It provides approximate mathematical characterisation of prior predictive probability distributions, and
May 3, 2021
Calibration – A Simple Model
This is the first in a series of tutorials which demonstrate workflows for parameter estimation and uncertainty analysis with the PEST/PEST++ suites. These are not the only
April 19, 2021
How Complex Should a Groundwater Model Be?
Catherine More and John Doherty Date: Wednesday, June 23, 2021 Time: 10:00 am Australia Central Standard Time (Adelaide, GMT+09:30). To register for the webinar, click
April 9, 2021
Uncertainty in Groundwater Modelling 101
https://vimeo.com/548316380 by Catherine Moore and John Doherty We have talked about uncertainty before – in last year’s webinar series. We have been asked to talk
April 9, 2021
OLPROC: Processing Observations Made Easy
OLPROC is a model dancing partner. Its role is to postprocess model outputs in order to match them with field measurements, as well as to
February 23, 2021
Worked Example: Simultaneous Interpretation of Six Pumping Tests
Simultaneous fitting of drawdowns induced by pumping at multiple sites in an area of complex geology revealed important patterns of connected permeability Over a six
February 8, 2021
Worked example: Exploring model defects using linear analysis
Any groundwater model is riddled with imperfections. Do these compromise its decision-support utility? Linear analysis can answer this question.
January 28, 2021
SEGLISTS: Interpolation along linear features
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,
January 28, 2021
PLPROC: a simple pilot point example
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
November 28, 2020
News
Webinar series attracts international audience
Predicting the future of any environmental system is fraught with uncertainty; nevertheless, decisions must be made and risks must be assessed. This is where decision
July 8, 2020
Global Miners Back Groundwater Modelling Project
Led by the National Centre for Groundwater Research and Training (NCGRT) at Flinders University and in conjunction with the mining and groundwater industries, the Groundwater
April 21, 2020
Media Releases
Global Miners Back Groundwater Modelling Project
Led by the National Centre for Groundwater Research and Training (NCGRT) at Flinders University and in conjunction with the mining and groundwater industries, the Groundwater
April 21, 2020