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That confirms standard Egyptian chronology and rules out some challenges, Manning said. It would also move back the timing of the Late Bronze Age on Cyprus, because a Cypriot bowl from that period was found on Thera buried under the eruption debris, Manning said.The work also gives new evidence that a major volcanic eruption on the Aegean island of Thera, also called Santorini, happened in 1628 B. Yener, noting the 128-year shift in the date of the volcanic eruption, said that being wrong by that much would be like trying to understand America under Ulysses S.In addition to offering a history of weather, these tree rings also offer some insight into how our ancestors lived, such as the climate extremes they suffered and the construction and abandonment of their settlements.In fact, under a microscope, experts can determine in exactly what year a barbed wire fence made a wound into a tree, helping to settle modern property disputes.Y., and Sturt Manning of the University of Reading in England. By helping scientists synchronize the chronologies they have constructed for ancient cultures, it will alter modern understanding of trade, migrations, wars and other relationships between civilizations in the region, she said.They said they can provide precise dates for wood that was chopped down between 2220 B. And the greater precision on historical dates will clarify understanding of social and political changes within civilizations, she said.
"But, it's a great pleasure to travel to remote areas in the United States or Mexico to original forests, even virgin forests, with old growth trees, and there are precious few of these locations left.Tree rings may also help solve some of history's mysteries.For example, Stahle believes drought may have played a part in the New World's "Lost Colony" of Roanoke. That was the most severe drought of 800 years in this part of the United States, and 1587 was a particularly significant year because Virginia Dare, the first English baby born in the New World, and the other colonists at the Roanoke colony in North Carolina, were last seen in the summer of 1587," says Stahle, pointing to some extremely skinny rings on a piece of bald cypress from Blackwater River, Virginia. "In the pantheon of tree species for dendrochronology, there are a few that are the crème de la crème, if you will--the very best species in the world.Just as satellite photos do--large sets of information like this tree ring data bring into focus patterns and phenomena that are larger than one lifetime. Atmospheric and Geospace Sciences (AGS) The Division of Atmospheric and Geospace Sciences (AGS) of the Directorate for Geosciences supports research to add new understanding of the behavior of the earth's atmosphere and its interactions with the sun.Kent State Geology Professor and Research Team Present Findings Studying Drought A group of researchers have studied the history of drought in the Pacific Northwest during the last 6,000 years, a time that spans the mid-Holocene geological epoch to the present.
"Not only is Mexico vulnerable to water availability, but her hydroelectric power supply system is also vulnerable to climate variations and drought.