Potential Fields

Potential Fields Course

VIDL Network experience can introduce you to Potential Fields, or more specifically, gravity and magnetics. Magnetic data are a little more complicated to use since the magnetic field is dipolar. This means that a magnetized body’s signature (anomaly) character has a minimum and a maximum, and it changes shape based on its geographic relation to the earth’s magnetic field. The initial measured fields must therefore be corrected for geographic location. Once the magnetic field is corrected, the interpretation of geologic structures becomes simpler because their signatures (anomalies) relate to the size, shape, depth, and magnetic susceptibility of the various bodies.

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Guide: PF 105 – Density

  Gravity exploration must account for the horizontal and vertical differences in density which occur in subsurface geologic features. Gravity anomalies require lateral density discontinuities such as stratigraphic [...]


Guide: PF 107 – Velocity

  Velocity, in this context, is the speed (distance / time) of sound (a compression wave) through rock (which may contain fluid and gas). Velocity may be used [...]


Guide: PF 108 – Salt Magnetic Susceptibility

Airborne magnetic surveying for petroleum exploration continues to routinely and indisputably reveal interesting and measurable magnetic anomalies (as small as 0.1 nT under the best survey conditions) which arise from [...]


Guide: PF 116 – Optimum Profile

  What is an optimal profile and how should an interpreter select one? Selecting the optimal profile is one of the most important initial steps in 2D modelling [...]

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