 A study published in 2014 found , rapid grounding line retreat in the years 1992 @-@ 2011 . Based on a study from 2005 , the greatest retreat was seen in Sjogren Glacier , which is now 13 km ( 8 @.@ 1 mi ) further inland than where it was in 1953 . There are 32 glaciers that were measured to have advanced ; however , these glaciers showed only a modest advance averaging 300 m ( 980 ft ) per glacier , which is significantly smaller than the massive retreat observed . Thwaites Glacier , which has also shown evidence of thinning , has been referred to as the weak underbelly of the West Antarctic Ice Sheet . A study published in 2014 found rapid grounding line retreat in the years 1992 @-@ 2011 . Totten Glacier , is a large glacier draining a major portion of the East Antarctic Ice Sheet . A study in 2008 concluded that Totten Glacier is currently losing mass . A study published in 2015 concluded that Totten Glacier , has the largest contribution of ice thinning rate on the East Antarctic continent , and that the thinning is driven by enhanced basal melting , because of ocean processes , and affected by <unk> activity . Additionally , warm Circumpolar Deep Water , has been observed during summer and winter months at the nearby continental shelf below 400 to 500 meters of cool Antarctic Surface Water . 
