These are floating extensions of outflowing glaciers from the continental ice mass. The average temperature of an ice mass ranges between . On Earth, there are about of total ice mass. The latter are formed beneath, not in front of, the ice mass. The ice mass is about wide and long. This causes an ice mass to form in the medium. Ice thickness measurements from the GRACE satellite indicate that ice mass loss is accelerating. These include ice mass balance buoys, upward looking sonar from under-ice buoys, and satellites. This ice mass falls finally into the Suru River, providing views of the huge ice-fall.