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How does the earth's centre of gravity changing cause land to rise?
by hanoz 4y ago
How does the earth's centre of gravity changing cause land to rise?
- jojobas 4y agoWater from melting ice is distributed around the globe, shifting CoG away from Greenland. This new water distribution is therefore uneven, more water getting to the other side.
- hanoz 4y agoYes, I understand how the redistribution of water would cause the centre of gravity to change, but not how the changed centre of gravity would the land to rise.
- boomboomsubban 4y agoRise relative to sea level.
- jojobas 4y agoAll the water starts to be attracted to the point slightly further from Northern Europe.
- Arnt 4y agoI guess it's easier if you ignore gravity, water and the earth's curvature. The land on which you stand may be regarded as a floor. If you put something heavy on a floor, the part near the weight bends down. If you then remove the weight, the floor bends back up (except not 100%). The glacier on Greenland is heavy. Or perhaps even easier if you include all three. The water that's currently a glacier pushing Greenland down will float elsewhere, and its weight will push most of the world's flooring down, but less so than currently, because the weight of that water will be distributed across a much larger area. That won't compress the planet's magma, ergo, some part of the floor rises as the weight shifts, and the part that lifts is the part under and near Greenland.