 |
|
|
|
|
|
|
|
|
|
|
|
|
| q |
As ice sheets grow, the pressure of their
|
|
|
weight on the underlyingion bedrock
|
|
|
becomes significant.
|
|
|
| q |
Due to the different densities of ice and
|
|
|
rock, a ice sheet of 3000m thickness is
|
|
|
|
roughly equivalent to the weight of
|
|
|
1000m of solid rock.
|
|
|
| q |
The initial sinking would be elastic and
|
|
|
immediate.
|
|
|
| q |
The bedrock later respond more slowly
|
|
|
|
and sinks half of the remaining distance
|
|
toward the eventual equilibrium every
|
|
|
3000 years.
|
|
|
| q |
The total time to reach the final
|
|
|
|
depression depth is about 15,000 years.
|
|