H3DTD v2 Package

H3DTD v2 is a program library for carrying out forward modeling and inversion of time domain EM data over 3D structures. It is capable of modeling the Cartesian components of the EM fields (E, B and dB/dt) or sub-audio magnetic (SAM) data. The contents of this manual are as follows:

• 1. Package overview
  • 1.1. Description
  • 1.2. Highlights of H3DTD v2
  • 1.3. Program Library Content
  • 1.4. Licensing
  • 1.5. Installing H3DTD v2
• 2. Background theory
  • 2.1. Fundamental Physics
  • 2.2. Discretization of Operators
  • 2.3. Forward Problem
  • 2.4. Data
  • 2.5. Sensitivities
  • 2.6. Inverse Problem
• 3. Elements
  • 3.1. Program Library
  • 3.2. Main Input Files
  • 3.3. Supporting Files
• 4. Running the programs
  • 4.1. Contents
• 5. Examples
  • 5.1. dB/dt for Coincident Loop Airborne
  • 5.2. SAM Data for a Large Surface Loop
  • 5.3. TEM Data for Galvanic Sources
• 6. References