Geological Survey of Canada Offshore Geophysical Survey Tracks, Beaufort Shelf and Slope - Shapefiles

This dataset includes track locations of geophysical data collected as part of research cruises conducted by, or for, the Geological Survey of Canada (Atlantic). Geophysical data types collected on AANDC (Aboriginal Affairs and Northern Development Canada) supported BREA (Beaufort Regional Environmental Assessment) cruises include "light" reflection pinger-type seismics (Knudsen 3.5 kHz), and multibeam sonar bathymetry. Track locations were taken at anywhere from 30 to 5 second intervals. The supplied shapefile includes all BREA - related Expeditions (cruises). BREA - specific expeditions are limited to numbers 2009804, 2010804, 2011804 and 2014804.