Scientists have devised a clever new technique to help them determine just how severe the conditions of drought were during the time that the Maya civilization was collapsing 1,000 years ago, allowing researchers to pinpoint the different things that may have helped to cause this rapid disintegration.
Along the Yucatan Peninsula in Lake Chichancana, scientists from the University of Florida and the University of Cambridge discovered that they were able to extract isotopes of water that were held inside gypsum in the lake and measure these to analyze the drought that would have occurred during this time period, as Phys.org reports.
During the time that the Maya civilization began falling apart, it was determined that rainfall dropped sharply from 41 percent to 54 percent. However, during times of severe drought this level increased markedly to 70 percent.
Cambridge Ph.D. student Nick Evans, the author of the new study, explained that despite the controversy surrounding the theory that drought may have helped to cause the demise of the Maya civilization, this new research shows much more conclusively that there was indeed a serious lack of rainfall during the time that their way of life was ending.
"The role of climate change in the collapse of Classic Maya civilization is somewhat controversial, partly because previous records are limited to qualitative reconstructions, for example whether conditions were wetter or drier. Our study represents a substantial advance as it provides statistically robust estimates of rainfall and humidity levels during the Maya downfall."