Icebergs produce some of the loudest natural noises in the oceans. Can we learn anything about their birth, life and death by listening in?
Antarctica’s biggest icebergs act like giant tuning forks when they collide with each other and the sea floor
"An iceberg plate works as a tuning fork," says Alexander Gavrilov, a professor at the Centre for Marine Science and Technology at Curtin University in Australia. "The song frequencies depend on iceberg's dimensions." "These are really powerful noises," says Vera Schlindwein, a professor of polar and marine seismology at the University of Bremen in Germany and a researcher with the Alfred Wegener Institute's Helmholtz Centre for Polar and Marine Research. "When they were first discovered, research on iceberg sounds was mainly just out of curiosity.
"The data is sent to Ukraine, and the staff at the Antarctic station maintain the equipment," he says.In the Arctic, however, it is a different story. Here the icebergs don't sing as they don't reach the kind of sizes needed for this, but the underwaterestimate levels of ice loss from Arctic glaciers
There are more than 200 glaciers that spill ice into the ocean around Greenland, so together they contribute a significant amount of noise to the marine environment, says Podolskiy.
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