Studies reveal that a powerful earthquake of 8.8 magnitude that struck central Chile in 2010 was responsible for triggering icequakes in Antarctica. Icequakes are categorized as seismic tremblings caused by a sudden movement within a glacier or sheet.
A recording of signals was analyzed by 12 of Antarctica's 42 seismometers. The pattern suggests the opening and closing of crevasses generated the tremors. The quake, with an epicenter 2,900 miles north of Antarctica, led to the series of one to 10 second icequakes in the continent.