For asset management purposes we monitor the effects of earthquakes on all kind of structures. We also operate a number of ground sensors to record the movements at the upper surface levels.
Over the past years we were confronted with two different types of earthquakes:
- Locally induced earthquakes due to gas exploration
- Geophysical earthquakes due to geophysical processes e.g. continental plate drift
What we record are the effects of earthquakes at surface level. We are (or better our customers) confronted with the effects of seismic activity on a daily basis.
To explain how we visualize the effects of earthquakes we will use two examples, for each type of quake mentioned above, one example.
The content of this explanation is limited to the measurements taken by the tilt sensors.