The onset of the Last Glacial Maximum after 30, 000 years BP saw the expansion of alpine glaciers and continental ice sheets that blocked migration routes out of Beringia.
32.
Sea level can also change ( primarily due to the formation or melting of continental ice sheets ), and raise or lower the final base level for coastal rivers.
33.
This period of time, which lasted from approximately 23, 000 to 10, 000 years ago, was marked by the repeated advance and melting back of massive, continental ice sheets.
34.
"This current iceberg represented maybe 50 years of growth of the ice shelf as a result of flow of ice out from the continental ice sheet, " he said.
35.
By contrast, the vast continental ice sheets were thought to move slowly and consistently _ which implied that it would take centuries for a warming climate to affect them.
36.
Each glacial advance tied up huge volumes of water in continental ice sheets thick, resulting in temporary sea-level drops of or more over the entire surface of the Earth.
37.
The Quaternary Period is typically defined by the cyclic growth and decay of continental ice sheets driven by Milankovitch cycles and the associated climate and environmental changes that occurred.
38.
Simulation of the northern hemisphere continental ice sheets over the last glacial-interglacial cycle : experiments with a latitude-longitude vertically integrated ice sheet model coupled to a zonally averaged climate model.
39.
Starvation of continental ice sheets is known to have occurred during the period " before " the Last Glacial Maximum in many areas of Canada and the West Siberian Plain.
40.
During the Pleistocene Epoch, continental ice sheets depressed the land surface ( see Hudson Bay ), scooped out thousands of lake basins, and carried away much of the region's soil.
