Antarctica is experiencing signifcant effects from Anthropogenic Global Warming.

Image: from Scambos, et al., at NSIDS, Boulder, CO
This image shows the entirety of Antarctica and its named ice sheets.

Below, this glacier acceleration graphic illustrates the ocean-land-ice interface, lubricated slope and buoyant force that helps stabilize the whole above-water, ground-based ice. The small rise in sea-level, connected to the warming temperatures and lubrication of the glacier's base all add up to forces that will cause the ice to disintegrate.

Glacier Acceleration Diagram

NSIDC caption ---"Glacier-ice shelf interactions: In a stable glacier-ice shelf system, the glacier's downhill movement is offset by the buoyant force of the water on the front of the shelf. Warmer temperatures destabilize this system by lubricating the glacier's base and creating melt ponds that eventually carve through the shelf. Once the ice shelf retreats to the grounding line, the buoyant force that used to offset glacier flow becomes negligible, and the glacier picks up speed on its way to the sea. Image by Ted Scambos and Michon Scott, National Snow and Ice Data Center, University of Colorado, Boulder."---NSIDC

Image:NASA, MODIS, National Snow and Ice Data Center.

--"This image of the Wilkins Ice Shelf was taken on March 31, 2009, by the NASA MODIS satellite. Between March 31 and April 6, the ice bridge connecting the Wilkins to Charcot Island collapsed.

The Wilkins Ice Shelf is located on the southwestern Antarctic Peninsula, the fastest-warming region of the Earth. In the past 50 years, the Antarctic Peninsula has warmed by 2.5 degrees Celsius (4 degrees Fahrenheit). In the early 1990s, the Wilkins Ice Shelf had a total area of 17,400 square kilometers (6,700 square miles). Events in 1998 and the early years of this decade reduced that to roughly 13,680 square kilometers (5,280 square miles). In 2008, a series of disintegrations (rapid repeated calvings in which the ice shelf pieces are small enough to topple over) and break-up events (rifting of large sections of the shelf, leading to large tabular iceberg calvings) shrunk the area of stable shelf to roughly 10,300 square kilometers (4,000 square miles), a net loss within a year of approximately 3,600 square kilometers (1,400 square miles)." -- NSIDC Text

Image: NASA, MODIS, NSIDC

This before and after image shows the collapse of the ice bridge connecting the remainder of Wilkins Ice Shelf to Charcot Island. NSIDC processed these images from the NASA Moderate Resolution Imaging Spectroradiometer (MODIS) sensor, which flies on NASA's Earth Observing System Aqua and Terra satellites.

—Credit: National Snow and Ice Data Center

Realize, the breakup and melting of the "floating" shelf ice DOES NOT cause sea level to rise. However, the sea borne ice shelf "butresses" the land based glaciers -- which, when they are added to the oceans, by melting DO cause sea-level rise.

If all the ice BEHIND the Wilkins Ice sheet slipped into the sea and melted it would would raise sea level in a small way
.
The Wilkins Ice Sheet covers about 13,680 sq kms, according to the image at the top of this article, and possibly butresses an equivalent area of land borne glacial ice. That much ice, if it slipped into the oceans and melted would be in the ~ 3mm or less range. Not knowing how much ice is above the sheet prevents me from using the actual amount. That stated, I will use a figure much greater than what appears to be behind the wsilkins ice sheet for illustration purposes.

For example, the surface area of the world's oceans is roughly 361 million square kilometers. For illustration, the melting 41,681.8254 km3 (10,000 cubic miles) of ice would raise the oceans level world-wide by a bit over 4.5 inches (4.546 inches), where as 100,000 cubic miles of melted ice would yield a sea level rise of 45.457 inches.

We can caculate it "easily."

Each cubic kilometer contains 1 billion cubic meters of water, and that 10,000
cubic miles of water contains 41,681,818,254,406 m3. If we pour that much water over an area of 361 million square kilometers, we end up with a puddle about 11.54621 cm deep.

Thus 41,681,818,254,405 cubic meters / 361,000,000,000,000 square meters = 0.1154621 meters as our puddle depth. Which is 11.5 cm . . . or 115 mm . . . or 4.54575 inches

To keep this higher sea level water from coming "ashore," we would have to build a massive dike around the lands that border the oceans and bay and seas that are interconnected to the oceans. Naturally, in low-lying storm-damage-prone areas, larger dikes would need to be built. Wind driven water levels would be equivalently higher and reach farther inland, accordingly.

Image: National Snow and Ice Data Center