--> Figure 1

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Figure 1. Imaging through gas clouds. Normal 3-D streamer data (top) from a deepwater field in Indonesia is badly distorted by shallow gas. The converted wave section (bottom) from the 4C survey successfully imaged the shallow gas reservoir and the underlying structure. (Image from Battie et al., 2000.) 

Click to view the normal 3-D streamer data and converted wave section in sequence.