Sentences with phrase «cedar tree rings»

Your report on Japanese researchers finding unusually high levels of carbon - 14 in cedar tree rings laid down between AD 774...

Not exact matches

Using live trees for comparison, Yamaguchi was able to establish that the cedars had rings up until the early 1690s.

In the early 1990s, Japanese scientists Hiroyuki Kitagawa and Eiji Matsumoto extracted eleven tree ring cores from cedars on the South Pacific Japan island of Yakushima.

Actually, in Dr Mann's case, it's not easy when simple data handling and statistical modeling is your day job - hence, all his problems with California bristlecones, double - counted lone Gaspà © cedars, upside - down Finnish lake sediments, transposed eastern and western hemispheres, invented statistical methods, truncated late 20th - century tree - rings, etc, etc..