The Doppler Effect in an ice hole February 12, 2020February 11, 2020Leave a comment What does a 9 inch ice core sound like when dropped down a 450 foot hole? Like this! Credit to @peter_neff for the idea and @Scripps_Polar, @sciencejenna, @GeosciencesPU, @US_IceDrilling, and @paleosurface for the execution! pic.twitter.com/pW7LxKdbUB — John Andrew Higgins (@blueicehiggins) February 7, 2020 And here’s what the actual research is all about. Interesting enough on it’s own.