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austarter t1_j3zwndr wrote

Reply to comment by Captainbhusta in Why are coastlines crinkly near the poles but smooth in the tropics? by emsot

Why does sediment move better in warm water? Cold makes it denser so stuff is less buoyant?

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The_Frostweaver t1_j400oit wrote

It has more to do with things like total precipitation being way lower in the arctic so less sediment transportation from land to sea and coastlines being locked behind ice protecting them from wave action.

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