VOXI Earth Modelling Workshop

Monday April 29, 2013
9 am - 4:30 pm
Simon Fraser University – Downtown Vancouver Campus
*NEW Location*, Room 1530, Canadian Pacific Lecture Room

Join us for a hands-on VOXI workshop where you'll have the opportunity to follow along with Dr. Rob Ellis. Basic principles of inversion will be explained and demonstrated followed by advanced uses of VOXI including the use of constraints as well as Magnetization Vector Inversion and Iterative Reweighting Inversion.

Who should attend

This workshop is intended for Geophysicists. Oasis montaj and VOXI Earth Modelling experience is not required but would be beneficial.

Attendee Requirements

Laptop computer with wifi capabilities is required. Temporary Oasis montaj license can be provided on request.

Register for the VOXI Workshop

Only 25 spaces available. Registration fee is $150.

Registration fee includes a one-week Professional VOXI subscription.



Registration/Set Up


Presentation: Introduction to Inversion with VOXI

  1. Data and models, forward modelling and inversion.
  2. Understanding how VOXI solves the inversion problem.
  3. Optimizing your inversions in VOXI: mesh design, data sampling, error assignment.
  4. Inverting residual vs. total response data in VOXI and background removal.
  5. Inverting gravity, magnetic, and gravity gradiometer data.
  6. Magnetization Vector Inversion (MVI) explained.
10:30 Break/Coffee

Hands On: Reinforcing Inversion with VOXI

A suite of datasets will be provided which the participants should invert with VOXI to try to discover the target sources and reinforce the concepts outlined in the presentation.

12:00 Break Lunch (not provided)

Presentation: Advanced Inversion with VOXI

  1. Understanding non-uniqueness and constraints.
  2. Presenting the constraints implemented in VOXI by example
    • Reference models
    • Weighting models
    • Parameter bounds
    • Active domains
    • Iterative reweighting (IRI)
  3. Building constraints in VOXI.
  4. Using drillhole based constraints in VOXI.
  5. Using weighting to explore the space of equivalent models.
  6. Combining inversions in VOXI: gravity, magnetics, EM.
2:30 Coffee Break

Hands On: Reinforcing Advanced Inversion with VOXI

A suite of datasets with constraints will be provided which the participants should invert with VOXI to try to discover the target sources.

Participants are welcome to apply VOXI to their own data with support from Geosoft Technical Analysts.

4:00 Wrap Up: Lessons learned, future directions.
4:30 End of Workshop
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