It is the sudden release and breaking away of a mass of ice from a glacier , iceberg , ice front , ice shelf , or crevasse .
It is a form of ice ablation or ice disruption and is normally caused by the glacier expanding .
form is the sudden form and breaking away of a mass of ice from a glacier , iceberg , ice front , ice shelf , or crevasse .
It is a form of ice ablation or ice disruption and is normally caused by the glacier expanding .