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Blue Intensity In Pinus Sylvestris Tree Rings: A Manual For A New Palaeoclimate ProxyCampbell, Rochelle, McCarroll, Danny, Robertson, Iain, Loader, Neil J., Grudd, Håkan, Gunnarson, Björn 07 1900 (has links)
Minimum blue intensity is a reflected light imaging technique that provides an inexpensive, robust and reliable surrogate for maximum latewood density. In this application it was found that
temperature reconstructions from resin-extracted samples of Pinus sylvestris (L.) from Fennoscandia provide results equivalent to conventional x-ray densitometry. This paper describes the implementation of the blue intensity method using commercially available software and a flat-bed scanner. A calibration procedure is presented that permits results obtained by different laboratories, or using different scanners, to be compared. In addition, the use of carefully prepared and chemically treated 10-mm-diameter cores are explored; suggesting that it may not be necessary to produce thin laths with the rings aligned exactly perpendicular to the measurement surface.
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