An Iceberg the Size of Delaware Just Broke Away From Antarctica<br />If Larsen C’s shelf front retreats past this line, called the compressive arch, the shelf is likely to collapse.<br />If Larsen C’s shelf front retreats past this line, called the compressive arch, the shelf is likely to collapse.<br />The glaciers will feel less resistance to flow, effectively removing a cork in front of them.”<br />According to Dr. Rignot, the stability of the whole ice shelf is threatened, as the shelf front thins.