Geosciences
Geophysical Data Analysis with Geosoft
Hands-on training in Geosoft Oasis montaj for managing, processing and presenting geophysical and geological data: databases, gridding, processing of magnetic, gravity and gamma-ray spectrometry data, map production and 3D display.
Overview
About the programme
Duration
5 days
Delivery
Training hall · Virtual · At your premises
Language
Arabic or English
Objectives
Training outcomes
- Import ground, airborne and borehole data, organise it in the software’s databases and check it.
- Build grids by choosing the interpolation method and parameters that suit the data distribution.
- Process magnetic survey data: diurnal correction, removal of the International Geomagnetic Reference Field (IGRF), levelling, reduction to the pole, derivatives and analytic signal.
- Process gravity data: free-air, Bouguer and terrain corrections, and separation of regional and residual anomalies.
- Produce print-ready maps and 3D views, and export results to GIS.
Content
What the programme covers
Day 1: the software environment and databases
- The interface, projects and coordinate systems.
- Importing XYZ data, tables and ground and airborne survey data; database channels and channel calculations.
- Quality checks: profile plots, outliers and duplicate readings.
Day 2: grids and maps
- Interpolation methods: minimum curvature, kriging and triangulation, and choice of cell size.
- Basics of filtering in the spatial frequency domain.
- Map production: shading, colour legends, coordinate grids, map elements and export.
Day 3: magnetic data
- Diurnal correction, removal of the reference field, and levelling.
- Reduction to the pole, analytic signal, horizontal and vertical derivatives, and tilt derivative.
- Upward continuation, anomaly separation, and Euler depth estimation.
Day 4: gravity and gamma-ray spectrometry data
- Gravity corrections: instrument drift, tide, latitude, free air, Bouguer and terrain.
- Separating and interpreting regional and residual anomalies.
- Gamma-ray spectrometry data: potassium, uranium and thorium channels and ratios, and ternary maps.
Day 5: integration and final project
- Combining geophysical data with geological maps and borehole data, and 3D display.
- Export to GIS.
- Final project: processing a complete data set and producing its maps, followed by the assessment.
Who it is for
Target audience
Geophysicists and geologists in mineral exploration, geological survey and groundwater work, and data analysts who prepare geophysical maps.
Method
Delivery method
Each participant works on a computer with the software installed throughout, on training data sets or on the organisation’s own data. The exercises need Oasis montaj licences; their source is agreed with the organisation before delivery. Delivered in Arabic or English.
Questions
FAQ
Does the programme need licences?
Yes. Each participant needs an active Oasis montaj licence on their computer during the programme; provision of licences or temporary training licences is agreed with the organisation before delivery.
Can we work on our own data?
Yes. The final project can be built on the organisation’s magnetic, gravity or radiometric surveys if they are sent to the centre before delivery.
What background is needed?
A basic knowledge of the underlying geophysical methods, particularly magnetics and gravity, and everyday computer use. No previous use of the software is required.
A programme tailored to your organisation
The duration and topics of the programme are adjusted to the organisation's needs, and it is delivered at its site, in a training hall arranged by the Center, or virtually.