In preparation for its submission, Canada has acquired about 15,500 kilometres [9,631 miles]
of seismic reflection data, 1,100 km [684 miles]
of seismic refraction data and 38,000 line - kilometres [23,612 miles]
of bathymetric data, as well as deployed 171
sonobuoys to collect information about the seismic velocity in the sedimentary layers.