The hills are alive with the sound of music—or at least one massive Antarctic ice shelf is alive with a peculiar tune. Scientists initially installed 34 seismic sensors under the surface of the Ross Ice Shelf to track the ice’s movement and structure over the course of 2 years. But when they later analyzed the data, they found the shelf was humming, and the pitch changed depending on how winds were whipping across the snow dunes on the ice’s surface, Earther reports. Listening for changes to the hum could indicate how the shelf is responding to changing weather conditions and whether it’s in danger of cracking, the researchers report this week in Geophysical Research Letters.
*Correction, 18 October, 9:40 a.m.: The original headline on this article incorrectly referred to an Atlantic ice shelf.