Dr. Xiao-Le Deng

Gravity and magnetics from fatiando.gravmag

The page is API content about gravity and magnetics forward modeling, inversion, transformations and utilities from Gravity and magnetics (fatiando.gravmag) — Fatiando 0.5.

It should be noted that fatiando is performed on Python2.7.

The ongoing Harmonica is the part of fatiando.gravmag as fatiando/harmonica: Forward modeling, inversion, and processing gravity and magnetic data:

1.Forward modeling

The forward modeling modules provide ways to calculate the gravitational and magnetic field of various types of geometric objects:

  • prism: 3D right rectangular prisms
  • polyprism: 3D prisms with polygonal horizontal cross-sections
  • sphere: Spheres in Cartesian coordinates
  • tesseroid: Tesseroids (spherical prisms) for modeling in spherical coordinates
  • talwani: 2D bodies with polygonal vertical cross-sections

2.Inversion

The inversion modules use the forward modeling models and the fatiando.inversion package to solve potential field inverse problems:

  • basin2d: 2D inversion of the shape of sedimentary basins and other outcropping bodies
  • harvester: 3D inversion of compact bodies by planting anomalous densities
  • euler: 3D Euler deconvolution methods to estimate source location
  • magdir: Inversion methods to estimate the total magnetization vector of multiple sources.

3.Processing

The processing modules offer tools to prepare potential field data before or after modeling.

  • normal_gravity: Compute normal gravity and reductions.
  • eqlayer: Equivalent layer processing
  • transform: Potential field transformations, like upward continuation, derivatives, etc
  • imaging: Imaging methods for potential fields for estimating physical property distributions
  • tensor: Utilities for operating on the gradient tensor

4.Interactivity

Module interactive implements matplotlib GUIs and IPython HTML widgets for interacting with the modeling and processing functions.