Polar ice melting may jeopardize some countries' survival


Lawrence,KS (08-22-2002)

From Topeka Capital -Journal,
By Roger Martin



Greenland is about four times the size of France and covered with a layer of ice almost 2 miles thick. Antarctica, with roughly the same depth of ice, is 10 times bigger.

When you're talking about ice on Earth, those two are just about all that's in the freezer. The coastal ice in some areas of Greenland is thinning at a rate of 3 feet a year.

But coastal melting isn't the only problem. Another concern is that the ice of Greenland isn't frozen solid to the bedrock it rests on. There may be more water than anyone thought between the Greenland ice cube and bedrock.

What would that mean? Think about a skater. A skater isn't really skating on ice but on water. The skater's weight, concentrated on two narrow blades, melts the ice and makes a film of water that permits fast gliding.

So if there's a lot of water under the ice of Greenland, the ice might slide faster toward the oceans. Sea levels could rise more quickly. If all of Greenland's ice melted, global sea levels would rise about 20 feet. The United States might be able to cope with such a rise, but for poor countries such as India and Bangladesh, it would be catastrophic.

So says Prasad Gogineni, Deane E. Ackers distinguished professor of electrical engineering and computer science at the University of Kansas. Gogineni and some colleagues in his department, as well as Dave Braaten, associate professor of physics and astronomy, are studying the problem.

In a previous project, Gogineni showed that the Greenland ice was moving faster toward the sea than had been thought. It was acting more like a melting ice cube sliding across a tabletop than one frozen to the tabletop.

The group has received about $7.8 million from the National Science Foundation and NASA to work on developing and testing radar that will detect how much water is under the Greenland ice.

Next summer, two vehicles -- one a robot and one operated by a human crew, and both equipped with the radar being developed -- will scoot around Greenland in target areas where something's already known abou the existence of water between ice and bedrock.

The purpose of the excursion, Braaten says, is to validate the new radar's accuracy.The researchers hope that the radar will tell not only whether a spot is frozen or melted but also, if it is melted,
the depth of the fluid between ice and bedrock.

Why would there be any water under 2 miles of ice? For one, because of pressure melting caused by the sheer weight of the ice mass. Or there could be geothermal hot spots that melt the ice.

Might the ice be melting because we're in one of those natural warm spells the Earth goes through? One such spell started 1,200 years ago. It lasted 400 years and by the end, grapes were growing in Greenland.

"What's new since then," Braaten says, "is that we're dumping huge amounts of greenhouse gases into the environment."

Carbon dioxide concentrations in the atmosphere historically peaked at around 280 parts per million, Braaten says. Today's figure is 21 percent higher than that.

The government of a Pacific island called Tuvalu made a plea last summer for countries to take in Tuvalu evacuees. Rising sea levels are already threatening the island.

If ice cubes as big as continents skate into the ocean, a whole lot of other people may be looking for higher ground too.


For more information, contact ITTC.


Current News | More News | ITTC Newsletter


Partner with ITTC

The Information and Telecommunication Technology Center at the University of Kansas has developed several assistance policies that enhance interactions between the Center and local, Kansas, or national companies. 

ITTC assistance includes initial free consulting (normally one to five hours). If additional support is needed, ITTC will offer one of the following approaches: 

Sponsored Research Agreement

Individuals and organizations can enter into agreements with KUCR/ITTC and provide funds for sponsored research to be performed at ITTC with the assistance of faculty, staff and students.

Licensing and Royalty/Equity Agreement

An ITTC goal is the development of investment-grade technologies for transfer to, and marketing by, local, Kansas, and national businesses. To enhance this process, the Center has developed flexible policies that allow for licensing, royalty, and equity arrangements to meet both the needs of ITTC and the company.

Commercialization Development

Companies with a technology need that can be satisfied with ITTC's resources can look to us for assistance. We can develop a relationship with interested partners that will provide for the development of a technology suited for commercialization.

ITTC Resource Access

ITTC resources, including computers and software systems, may be made available to Kansas companies in accordance with the Center's mission and applicable Regents and University policies.

ITTC Calendar
There are no upcoming events at this time.