Ocean melting has thinned Antarctica's ice shelves at an increasing rate over the past two
decades, leading to loss of grounded ice. The Ross Ice Shelf is currently close to steady
state but geological records indicate that it can disintegrate rapidly, which would accelerate
grounded ice loss from catchments equivalent to 11.6 m of global sea level rise. Here, we
use data from the ROSETTA-Ice airborne survey and ocean simulations to identify the
principal threats to Ross Ice Shelf stability. We locate the tectonic boundary between East …