Ice should melt when the weather is warm right? But that is NOT what happened with the ancient Laurentide Ice Sheet that covered a significant portion of North America during the last ice age. Its periods of melting and splintering into the sea actually took place during the COLDEST times during the last ice age and this has puzzled researchers for a long time now.
Now a new study conducted by the University of Michigan suggests small spikes in ocean temps rather than in the air could likely drive the rapid expansion of ice sheets as well as their retreats.
What the UM team discovered was atmospheric warming is NOT needed to trigger large-scale disintegration events in ice sheets if oceans warm and start to touch the edges of the ice sheets. It appears that when it comes to ice sheet they are far more sensitive to OCEAN WARMING than previously theorized! UM researchers believe this may be happening right now with the Greenland Ice Sheet and Antarctica!
For more information on this study and its findings go to: