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Monday, 23 May 2016

Earthlings: "Our Planet's Poles Are Shifting"

CLIMATE NEWS


Climate Change May Be Causing Earth's Poles To Shift

Scientists solve mystery of why the planet's axis is tilting eastward.



The position of Earth's axis has dramatically shifted, likely because of melting ice sheets (fueled by climate change) and natural changes in water storage on land, according to a new study in the journal Science Advances.
Erik Ivins, senior research scientist at NASA's Jet Propulsion Laboratory and co-author of the study published on Friday, told The Huffington Post that the movement of water on Earth's surface affects the planet's distribution of mass -- and its axis -- much like adding weight to a spinning top.
"If you considered a spinning top, and then placed a piece of chewing gum on the top, it would start spinning around a new axis," Ivins said in an email. "On the Earth, since water can be transported in and out of the oceans to the land -- affecting global mean sea-levels -- this also changes the moments of inertia, in exact analogy to the piece of chewing gum on a spinning top."

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