Lake Agassiz's major drainage reorganization events were of such magnitudes that they had significant impact on climate, sea level and possibly early human civilization. The lake's enormous freshwater release into the Arctic Ocean has been postulated to have disrupted oceanic circulation and caused temporary cooling. The draining of 13,000 years ago may be the cause of the Younger Dryas stadial. Although disputed, the draining at 9,900–10,000 years ago may be the cause of the 8,200 yr climate event. A recent study by Turney and Brown links the 8,500-years ago drainage to the expansion of agriculture from east to west across Europe; they suggest that this may also account for various flood myths of prehistoric cultures, including the Biblical flood narrative.