When air temperatures in Antarctica rise and glacier ice melts, water can pool on the surface of floating ice shelves, weighing them down and causing the ice to bend. It turns out that ice shelves don’t just buckle under the weight of meltwater lakes — they fracture. As the climate warms and melt rates in Antarctica increase, this fracturing could cause vulnerable ice shelves to collapse, allowing inland glacier ice to spill into the ocean and contribute to sea level rise.
https://news.uchicago.edu/story/scientists-find-evidence-meltwater-fracturing-ice-shelves-antarctica