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Water Column and Seismic collage

Detailed Description

3D Image of a multi-channel seismic (MCS) line showing gas (blue/green) migrating up through fractures in the subsurface, culminating in a 600 meter tall plume of methane gas in the water column that was captured using a Simrad EK60 split beam echo sounder.  Background bathymetry was downloaded from USGS Open-File Report 2012-1266 (


Public Domain.