3D Multi-scale Tomostatics using First Arrivals

Tomostatics is a technology to estimate a source of error in seismic imageries called near-surface<br>statics, which are spurious timing variations of seismic reflections caused by the lateral variations in<br>topography and the thickness of the weathering layer of extremely low seismic velocities. Most tomostatics<br>methods use first arrivals of seismic data to invert for a near-surface velocity model and estimate the static<br>corrections based on the model. In this paper we present a 3D tomostatics method based on deformable layer<br>tomography (DLT) using first arrival data.