____ are a proxy that can be used to recreate past variations in atmospheric carbon dioxide concentrations.

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05-12-2022
Geography

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____ are a proxy that can be used to recreate past variations in atmospheric carbon dioxide concentrations.

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akankshasharma92 akankshasharma92 · Answer 1 · 2022-12-08T02:20:06-05:00

Bubbles in glacial ice are a proxy that can be used to recreate past variations in atmospheric carbon dioxide concentrations.

Although they may appear serene and beautiful, glaciers can create a lot of noise when they begin to melt. According to a recent study, as a glacier's ice melts, compressed old air bubbles escape into the water, creating noise levels that are even higher than those found in rain-lashed seas with 6-meter waves. The noise is present year-round and is loudest between 1 and 3 kilohertz, or roughly the pitches in the piano's two uppermost octaves, according to data collected by underwater sensors at three locations where glaciers meet the sea . The researchers published their findings online this week in Geophysical Research Letters.

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