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themonkeymoo t1_iwx7ff1 wrote

Doesn't Mars have a lot more than than 300m elevation variance on its surface? How is 300m of water supposed to "cover" it?

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pmMeAllofIt t1_iwxp614 wrote

It's GEL- Global Equivalent Layer. Enough water to cover all of mars with 300m of water evenly. As of right now the estimates on the GEL of Mars' surface ice is 20-40m.

In comparison, the GEL of Earth's water is over 2.5km.

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