Source signature and static shifts estimations for multi-component ocean bottom data

Abstract:

We present an interpretive study to estimate the source signature and source statics of a field ocean bottom dataset. We use the down-going direct arrival to extract the source signature at different offsets. The down-going wavefield is obtained from a simple summation of the pressure (P) and the vertical partical velocity (Z) of the multi-component data. Such a summation is scaled by a factor that depends on offset and is estimated directly from the amplitude of the P and Z values in the $t-x$ domain. In addition, we compare two approaches to estimating the source-side static shifts. Our static shifts estimation give satisfactory result for an absolute offset up to $\pm 5000$ meters.