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Shuffling the Ice

Sea ice on the Arctic Ocean is always moving because of the currents beneath it. This movement causes a wide variety of collisions, factures or breaks in the ice, and creates dangerous obstacles for anyone travelling over it.

When ice floes collide and the edges are pushed together, the edge of one floe is sometimes pushed up on top of the other. This is called "rafting".

Sometimes the colliding ice becomes interlocked, with sections of one floe going both over and under the other. This is called "finger rafting".

Rafting is often associated with thin ice up to 15cm / 6 inches thick, but it can also occur with ice that is over 1 meter / 3 feet thick.

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