Bubbles from glacier ice turn up the noise in Alaska fjords

March 6, 2015 9:19 AM

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Bubbles from glacier ice turn up the noise in Alaska fjords

ANCHORAGE, Alaska (AP) — Glaciologist Erin Pettit began a research project to find out what humpback whales heard when a big piece of ice falls from a glacier and crashes into the ocean. But the sound generated by ice drifting in the water turned out to be just as interesting.

Acoustic research in Alaska's Icy Bay and other glacier ice-filled waters found that the fizz created by the release of pressurized air bubbles within glacier ice makes fjords the noisiest places in the ocean.

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