Meltwater pulse 1A

As meltwater pulse 1A is a time of rapid deglaciation is referred to the end of the last ice age. The pulse began about 14200-14700 years ago and let the sea level within 400 to 500 years global rise by 20 meters. The meltwater pulse triggered the Antarctic cold relapse.

As a source of melt water is a collapsing ice sheet, probably believed in Antarctica or between Canada and Greenland.