Because it's in East Antarctica -- and the "warm" deeper waters from the Southern Ocean are melting into the glacier and its whole catchment area. Let me show you:
Here is a map of Antarctica with the Totten Glacier highlighted in pale blue:
|Source: The Wasibngton Post, via Dennis Dimick on Twitter,|
via dtlange at Robertscribbler.
|Source: ScienceDirect via Robertscribbler.|
Towering Totten and the Coming MultiMeter Sea-Level Rise
For more, click here.
Now if the Totten Glaicier were all to melt, it would contribute about 3.5 meters of additional sea level -- over 11 feet, according to The Washington Post. Now this huge chunk of ice isn't going to all melt and leave the rest of Antarctica frozen. Instead, as it melts, Greenland, West Antarctica and other areas in East Antarctica will also melt, as they are doing now. So we could get, say, 1 meter from Totten, 1 from Greenland, 1 from West Antarctica and 1 or 2 from other parts of East Antarctica by 2100. Guess what! That's 13 to 16 feet of sea level rise! South Florida will be inundated. Chesapeake Bay, enlarged to the point of Ridiculousness. The Central Valley in California, flooded (maybe). The Missisissippi Delta in Louisiana, destroyed. Courtesy of the Fossil Fuels Derivatives Beast.
Possibly, the only thing that can stop this is Yellowstone blowing up.
Tips o' th' hat to dtlange and Robertscribbler.