“…Vertical Seismic Profile (VSP) surveys are regularly used for seismic monitoring in CO2 sequestration. 3D VSP (Harris, et al 2016), offset VSP (Al Hosni, et al 2016) and walkaway VSP (Yang, et al 2014) geometries are applied. However, quantification of timelapse changes occurring in the subsurface is rarely performed using VSP.…”