oa A Multi-level Source Design Improves Seismic Imaging Below Highly Reflective Layers

The multi-level source is a new airgun array design that attenuates the effects of ghosting in the low frequency range. This design does not remove the source ghost but shifts energy around to favor low frequencies. It is therefore useful in area with poor seismic penetration due to highly reflective layers such as salt, basalt or carbonates.