The interplay between mile - thick ice sheets, a warming atmosphere, and shifting oceanic currents has been a tough task for scientists to tackle. (earthtimes.org)
This suggests delayed ice retreat due to thicker ice in the region. (arcus.org)
This is especially true in one sequence in which he brings the ship to «crush depth» only to order an incredible fast surface into a solid sheet of thick ice. (markreviewsmovies.com)