Sentences with phrase «arid periods»

«When you have arid periods that persist for 60 years, as we did in the 12th century, or for millennia, as we did from 6,000 to 1,000 B.C., that's not really a «drought.»

These arid periods showed a clear pattern in the relationship; in the millenia - long California dry period from 6,000 to 1,000 B.C. there was a slight shift in the planet's orbit contributing to the increased amount of solar energy directed to the Northern Hemisphere.

Clues from prehistoric arid periods in California show that today's increasing greenhouse gas levels could lock the state into drought for centuries, according to a study by an international research collaboration led by Glen MacDonald from UCLA and including Katrina Moser from Western University and her former graduate student, Amy Bloom.

Clues from prehistoric arid periods in California show that today's increasing greenhouse gas...

«The competition between commensal house mice and other wild mice continued to fluctuate as humans became more mobile in arid periods and more sedentary at other times — indicating the sensitivity of local environments to degrees of human mobility and the complexity of human environmental relationships going back in the Pleistocene,» said Weissbrod, currently a research fellow at the Zinman Institute of Archaeology at the University of Haifa.

It remains unclear what happened to these hominins during the arid and hyper - arid periods of the Late Pleistocene.

Most groups have arid periods.

Not exact matches

There was a period when Barthianism bade fair to land us in arid dogmatism.

Coastal communities are being affected by rising seas, drought - prone areas are arid for longer periods and, as our report shows, infectious agents are taking advantage of these more extreme weather patterns.

By doing this, Allan has been able to restore dry, arid deserts into flourishing pasture in an astonishingly short period of time.

After a period of hype and over enthusiasm, investments have dried up, somewhat like the promise of oil from arid land.

The chart's green curve indicates that those periods with less precipitation (i.e. droughts) are more common when cooler temps prevail - more arid conditions, with less food production make people (and societies) rather restless.

Most of these areas had been dry savanna or arid during the last glacial period.

Mankind has actually found an efficient way to combat desert and drought: Arid Areas Greening Because of Higher CO2 Levels «Researchers predicted foliage would increase by 5 to 10 percent given the 14 percent increase in atmospheric CO2 concentration during the study period.

She said the medieval period was exceptionally warm and arid in California and the Southwest.