EM Inversion

Inversion is a process to find a model of subsurface resistivity that can fit the observed EM data. Two major goals of the inversion is 1) fitting the data for a given level of data errors/noise and 2) constraining resistivity values to vary smoothly in space. This app provides a capability to conduct 1D EM inversion. By inverting two voltage curves (i.e. EM data), we obtain a vertical resistivity profile that can fit the data.

Interactive App¶

Source:EM Inversion

Usage¶

App parameters¶

• EM system: AEM or tTEM

• Simulation or Inversion:

  • Sim: Simulation mode

  • Inv: Inversion mode

• z: depth to the layer

• h: thickness of the layer

• rho_b: background resistivity

• rho: layer resistivity

• % error: percentage error

Plotting parameters¶

• Resistivity range: range of resistivity shown in the left panel

• Depth range: range of depth shown in the left panel