ESS101C
Prof.
Jin-Yi Yu
Why Have Ice Sheets Grown Larger Since 0.9 Myr Ago?
qExplanation 2:
Ice Slipping Effect (nothing to do with climate
changes)
During earlier glaciations (2.75 – 0.9 Myr ago), ice sheets may
have been thin because they slid on water saturated soil toward lower
elevations and warmer temperatures.
During later glaciations
(beginning from 0.9 Myr
ago), after ice sheets stripped off most of the underlying soil, their central regions could grow higher
because they no longer slid.
(from Earth’s Climate: Past and Future)