Vibroseis: Is "Close enough for Seismic" Still Good Enough for Today

Although Vibroseis is the source-of-choice for modern acquisition, even simple research into vibrator performance demonstrates that this industry makes too many assumptions about the technique itself and about source behaviour. Either of these may lead to poorer data and less productivity than otherwise might be the case. This paper, therefore, addresses two closely related aspects of modern Vibroseis control and documentation that need improvement: • Accurately measuring and improving the energy transmitted into the ground and, • Improving quality control functionality of Vibroseis source control systems.