Tutorial: Processing gravity data with Harmonica
Info
- Presented at: Transform21
- Organized by: Software Underground
- Source code: fatiando/transform21
- Creative Commons Attribution 4.0 International
Tutorial video
About
In this tutorial we’ll take a tour around Harmonica, a Python library for forward modelling, inversion and processing gravity data, focusing on the processing workflow. We will start with a real dataset of scattered gravity observations and finally produce a regular grid of the Bouguer gravity disturbance. We will accomplish this by following these steps:
- Load the gravity dataset.
- Compute gravity disturbance by removing the normal gravity through Boule.
- Project the data to plain coordinates.
- Load a digital elevation model (DEM) of the survey area.
- Compute Bouguer gravity disturbance by forward modelling the topography with prisms.
- Interpolate the Bouguer gravity disturbance onto a regular grid at a constant height through the equivalent layer technique.
- Obtain the Bouguer gravity disturbance on a profile using the same equivalent layer.