Map showing free-air gravity anomalies in the southern Beaufort Sea

Free-air gravity anomaly data used in this compilation were obtained from the U.S. Geological Survey; the University of Connecticut Institute of Marine Sciences; and the Earth Physics Branch, Department of Energy, Mines, and Resources, Canada.

Bathymetric contours are based primarily upon water-depth data (uncorrected) collected together with the gravity data. Water depths were reported every half hour (approximately every 5.5 km) along USGS tracklines and interpolated to 10 minute intervals. Where no new bathymetric data were available, depth contours were taken from U.S. Hydrographic Office charts 6782 and 6785. Geographic features were taken from the same charts.