Poles and zeros of the different geophone types

The following sections summarize the calibration data for the six different seismometers currently in use in the SIL network.

• Poles and zeros of the 1 Hz Lennartz LE-3D geophones
• Poles and zeros of the 0.2 Hz Lennartz LE-3D/5s geophones
• Poles and zeros of the Streckheisen STS-2 seismometer
• Poles and zeros of the Guralp CMG-3T seismometer
• Poles and zeros of the Guralp CMG-3T seismometer from the Passcal instrument pool
• Poles and zeros of the Guralp CMG-3ESP seismometer from the Passcal instrument pool