US eyes Arctic survey

摘要

A US Coast Guard vessel will travel to the Arctic this week to determine the extent of the continental shelf north of Alaska and map the ocean floor - providing data that could be used for exploration planning.US scientists on the cutter Healy will leave Barrow,Alaska,on Thursday on a three-week journey.They will create a 3D map of the Arctic Ocean floor in a relatively unexplored area known as the Chukchi borderland.