Zero-Offset VSP Monitoring of CO₂ Storage: Impedance Inversion and Wedge Modelling at the Ketzin Pilot Site

Table 2

Summary of source and receiver layout for the zero-offset VSP baseline and repeat measurements. The number of depth levels and the depth range used for processing and imaging are listed as well. The depth is in meter below ground level (m b.gl.).

Measurement/dataset	Number of depth levels	Depth range	Source
Baseline	132	45–700 m b.gl.; 5 m spacing	5 m distance to well; activated on asphalt; VIBSIST-1000
Repeat	80	325–720 m b.gl.; 5 m spacing	10 m distance to well; activated on gravel; VIBSIST-3000
Processed and imaged	49	460–700 m b.gl.; 5 m spacing