Introduction

In this Workbook, we will explore the application of EVS to parameter estimation using kriging and mapping of parameters to complex geologic structures.

This workbook assumes that you understand all of the subjects covered in the previous workbooks including:

1) Network Editor Basics such as instancing, deleting, connecting and disconnecting modules.

2) Viewer basics such as setting views, rotations, scaling, translation, object selection and object property modification.

3) Two dimensional kriging of analyte (e.g. chemistry) data.

4) Geologic Hierarchy and preparing geology input files

5) The function of the Krig_3D_Geology Module.

6) The function of the plume_shell Module.

You must also be comfortable using the Modules pull-down menu to access the user interface for modules which have been instanced.

If any of these topics is unfamiliar, we recommend you review the preceding workbooks before beginning this lesson.

Throughout this workbook, we will use a few terms which may have slightly modified meaning in this context. They are:

Domain: The extent of the model. This is usually defined by the convex hull or rectilinear bounding box which encloses the borings from which chemical measurements or geologic observations were made.

Layer: An individual geologic layer, or a portion of an actual geologic layer.

Parameter Estimation: The process of assigning values to nodes on a grid (rectilinear, convex hull, or finite difference) based on the values of nearby sparse measured data. EVS performs parameter estimation using expert system driven kriging modules.