technical, Videos

5. Tikhonov Regularization

The importance of Tikhonov regularization in the solution of an ill-posed inverse problem in general, and in the calibration of a groundwater model in particular,

6. Singular Value Decomposition

Singular value decomposition (SVD) is explained. Also explained is the important role that SVD can play in solving an ill-posed inverse problem, and the insights

7. Pilot Points

Pilot points are often employed as a parameterization device for groundwater models. This is because they can provide a sound basis for highly-parameterized inversion while

4. Problems with Manual Regularisation

This video extends the discussion of the preceding video, while laying the foundation for ensuing videos. It explains how calibration based on manual regularization, whether

Basic Geostatistics – Part 2

In this continuation of the first video of this series, links between geostatistics and history matching of groundwater models are explored. The use of geostatistical

Basic Geostatistics – Part 1

This is the first of a two-part series. It discusses correlated random variables. It shows how knowledge of one such variable conditions estimation of the