Quality Control of Seismic Vibrator Output Force

There are many quality control methods used to monitor the output force from seismic vibrators. These quality control tools are used to provide what is normally expected to be a flat amplitude spectrum. However, rarely do amplitude spectrums of the QC data look similar to actual recorded seismic data. The purpose of this paper is to demonstrate how vibrator designs often degrade the accuracy of the QC data and how more rigid actuator designs improve QC data quality.