Post by Deleted on Aug 21, 2008 7:57:21 GMT 10
The evidence builds: mega-droughts are solar driven. There weren't any 4X4s on the road back in 4300BCE. These interruptions to the water cycle are certainly what did in the the Thylacine and Tassie Devil on the mainland IMHO. And most of the people in prehistoric Australia, for that matter. A fruitful topic for research, that.
Thing is, 'anthropogenic global warming' hysteria is all based upon computer models. Yet the physical evidence shows that the planet is quite capable of throwing up mega surprises with no help from us at all.
Evidence like this is a dire warning. Dead thylacines and mega-fauna could probably tell us that.
New climate record shows century-long droughts in eastern North America
news.research.ohiou.edu/news/index.php?item=503
Tuesday Aug 19, 2008
by ANDREA GIBSON
New climate record shows century-long droughts in eastern North America
ATHENS, Ohio (Aug. 19, 2008) – A stalagmite in a West Virginia cave has yielded the most detailed geological record to date on climate cycles in eastern North America over the past 7,000 years. The new study confirms that during periods when Earth received less solar radiation, the Atlantic Ocean cooled, icebergs increased and precipitation fell, creating a series of century-long droughts.
A research team led by Ohio University geologist Gregory Springer examined the trace metal strontium and carbon and oxygen isotopes in the stalagmite, which preserved climate conditions averaged over periods as brief as a few years. The scientists found evidence of at least seven major drought periods during the Holocene era, according to an article published online in the journal Geophysical Research Letters.
“This really nails down the idea of solar influence on continental drought,” said Springer, an assistant professor of geological sciences.
Geologist Gerald Bond suggested that every 1,500 years, weak solar activity caused by fluctuations in the sun’s magnetic fields cools the North Atlantic Ocean and creates more icebergs and ice rafting, or the movement of sediment to ocean floors. Other scientists have sought more evidence of these so-called “Bond events” and have studied their possible impact on droughts and precipitation. But studies to date have been hampered by incomplete, less detailed records, Springer said.
...
The data are consistent with the Bond events, which showed the connection between weak solar activity and ice rafting, the researchers said. But the study also confirmed that this climate cycle triggers droughts, including some that were particularly pronounced during the mid-Holocene period, about 6,300 to 4,200 years ago. These droughts lasted for decades or even entire centuries.
...
Thing is, 'anthropogenic global warming' hysteria is all based upon computer models. Yet the physical evidence shows that the planet is quite capable of throwing up mega surprises with no help from us at all.
Evidence like this is a dire warning. Dead thylacines and mega-fauna could probably tell us that.
New climate record shows century-long droughts in eastern North America
news.research.ohiou.edu/news/index.php?item=503
Tuesday Aug 19, 2008
by ANDREA GIBSON
New climate record shows century-long droughts in eastern North America
ATHENS, Ohio (Aug. 19, 2008) – A stalagmite in a West Virginia cave has yielded the most detailed geological record to date on climate cycles in eastern North America over the past 7,000 years. The new study confirms that during periods when Earth received less solar radiation, the Atlantic Ocean cooled, icebergs increased and precipitation fell, creating a series of century-long droughts.
A research team led by Ohio University geologist Gregory Springer examined the trace metal strontium and carbon and oxygen isotopes in the stalagmite, which preserved climate conditions averaged over periods as brief as a few years. The scientists found evidence of at least seven major drought periods during the Holocene era, according to an article published online in the journal Geophysical Research Letters.
“This really nails down the idea of solar influence on continental drought,” said Springer, an assistant professor of geological sciences.
Geologist Gerald Bond suggested that every 1,500 years, weak solar activity caused by fluctuations in the sun’s magnetic fields cools the North Atlantic Ocean and creates more icebergs and ice rafting, or the movement of sediment to ocean floors. Other scientists have sought more evidence of these so-called “Bond events” and have studied their possible impact on droughts and precipitation. But studies to date have been hampered by incomplete, less detailed records, Springer said.
...
The data are consistent with the Bond events, which showed the connection between weak solar activity and ice rafting, the researchers said. But the study also confirmed that this climate cycle triggers droughts, including some that were particularly pronounced during the mid-Holocene period, about 6,300 to 4,200 years ago. These droughts lasted for decades or even entire centuries.
...