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Ice Core Secrets

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While on board the USCGC Healy, an icebreaker in the Arctic, I was assigned to the research team from Cold Regions Research and Engineering Laboratory (CRREL), Hanover, NH to study the properties of ice as it pertains to the ship's capabilities for breaking it. The team of scientists made detailed ice thickness measurements. They used an electromagnetic instrument and also drilled holes in the ice for measuring its thickness. The team collected ice cores, too. Why do scientists want to collect ice cores? What information do scientists learn from ice cores? Sandra Kolb

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