It has been found that the ice cover has thinned up to 122 meters in some places, and thinning has left the glaciers unstable, say scientists from the University of Leeds in England.
The affected glaciers are unstable because they melt and calves. (ice breaks) reduces their mass faster than can be done with snowfall, and thinning has spread to 24% of West Antarctica since 1992.
The largest ice streams in the region – Pine Island and Thwaites Glaciers – lose ice five times faster than the time measurements began.
A team of researchers from the Center for Observation and Modeling of Poles of the United Kingdom (CPOM), which is based at the University, uses 25 years of satellite observations and climate models to track the evolution of snow and ice in the area