interactive app

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