Carbon dating in antarctica
Well, they used a nifty device called a LIDAR altimeter (Figure 1).
Using this, they were able to determine the ice trend by measuring the changes in surface height over time.
The Antarctic has gained about 7,300 square miles of ice each year since the late 1970s.
The Arctic, on the other hand, has lost about 20,800 square miles of ice each year in that same period .
Furthermore, while the Antarctic ice sheet is indeed increasing in size, this is not true for its northern counterpart, the Arctic.
And the ice gain in the Antarctic doesn’t cancel out the ice loss in the Arctic.
Because we know how fast radio waves move, if we measure how long they take to bounce off that big rock and come back to us, we can determine how far away the rock is .
It is there and the interior of the West Antarctic ice sheet where gains are occurring.The West Antarctic ice loss trend is new, abrupt, and began after the Industrial Revolution.Its tie to human activity has been demonstrated through a large number of both observations and theoretical models .Antarctica is a colossal landmass far from human civilization.How was this research team able to determine changes in the amount of ice each year?