Friday, 2 September 2011

NASA tracks the movement of ice in Antarctica

Ice is moving at a speed of several centimeters to several kilometers per year

Researchers at the U.S. space agency (NASA) for the first time were able to make a complete map of directions and speed of ice in Antarctica, which will significantly contribute to monitoring the predicted sea level rise caused by global warming. Site should explain what will happen with the "white continent" in a warmer world what climatologists predict.

A team of scientists has found that some formation of ice to the ocean waters move at a speed of about 240 meters per year. Displacement was observed due to the technique of comparing recordings made ​​at the same location at different times. In some parts of Antarctica shift amounts to several centimeters per year, while in other parts reach a speed of several kilometers per year, with pieces that have become detached and swim from the edge of the continent. Such is the case in the western parts of which scientists say is currently suffering the fastest changes, and also have the greatest impact on the overall ice mass balance. Plate thickness in this part of each year for want of 15 meters.

"We saw an incredibly moving ice from the heart of Antarctica, so far, can follow. This is like a folder view of all ocean currents, "the project leader.

With the help of images of European, Japanese and Canadian satellite data collected since 1996. by 2009. year. The map will also serve to test computer models that are now used to predict the consequences of climate change on ice sheets and ocean water.

The consequences of global warming are bad for Earth's second half. It was announced that the Arctic, whose volume of ice falling for decades, warming faster than any of the planet. As global temperatures rise, researchers are trying to discover how the melting ice from Greenland could raise sea levels.

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