Figure F4. Time slices of seismic reflection and instantaneous amplitude from the 1999 3-D single-channel seismic survey showing an apparent east–west trend in blank zones. The edges of blank zones appear as bright reflections, as a result of diffractions. Blank Zone 1 (Bullseye vent) appears as a circular feature (after Riedel et al., 2001). msbsf = milliseconds below seafloor.
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