Source Measurement Effect on HFVSSM Separation

HFVSsm (High Fidelity Vibratory Seismic) acquisition and separation plays an important role<br>in today’s land acquisition schemes. The method can improve productivity in the field and at<br>the same time improve signal characteristics in the data. It relies on measured motion to invert<br>the acquired data. However, separation can be sub-optimal if the measured motion is not<br>equal to the true source signature input into the ground. In a recent survey with HFVS<br>acquisition, we were able to obtain a 30 dB separation between adjacent vibrators, which in<br>our opinion could be improved with greater reliability of the source measurement. In this<br>abstract, we discuss the results of this survey and show that separation is affected by source<br>matrix measurement error.