Interesting news that the use of annual tree rings (dendrochronology) to determine dates of archeological events can be made more precise (https://www.theguardian.com/science/2016/aug/17/traces-of-sun-storms-locked-in-tree-rings-could-confirm-ancient-historical-dates-astrochronology). A Japanese worker has found that solar storms (often reasonably well-documented) can lead to a 20-fold increase in Carbon14 in the associated ring (the age of rings-only living in their year- is generally estimated by looking at the ratio of Carbon12 to Carbon14). These 'outliers' would facilitate a more accurate recalibration of the age of rings in ancient wood sections.
This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Wednesday 17 August 2016
Woodn't It be Luvverly?
Interesting news that the use of annual tree rings (dendrochronology) to determine dates of archeological events can be made more precise (https://www.theguardian.com/science/2016/aug/17/traces-of-sun-storms-locked-in-tree-rings-could-confirm-ancient-historical-dates-astrochronology). A Japanese worker has found that solar storms (often reasonably well-documented) can lead to a 20-fold increase in Carbon14 in the associated ring (the age of rings-only living in their year- is generally estimated by looking at the ratio of Carbon12 to Carbon14). These 'outliers' would facilitate a more accurate recalibration of the age of rings in ancient wood sections.
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