While this would certainly help the glacier from breaking apart, the effort required would be imense and a geotechnical nightmare. Building dikes above ground is tough enough as is.

On top of that we are warming so quickly. I don’t see how this would stop the sheet from melting from air temperature/solar radiation

if the 500 million was spent putting up wind turbines and solar panels you’d save more gkaciers melting overall and make a profit.

In the realm of crazy ideas, why not flood parts of the Sahara? Build a canal from the closest sea and just let it drain into there. There are also areas in Australia that were one great lakes that could also have a canal or two built to them from the ocean and flooded. Given the temperature in those places, it might make enough condensation to rejuvenate those and surrounding areas with the precipitation.

They’re going to put a white tarp on it, right?