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Facilitating tree-ring dating of historic conifer timbers using Blue Intensity
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Number of Authors: 14
2017 (English)In: Journal of Archaeological Science, ISSN 0305-4403, E-ISSN 1095-9238, Vol. 78, 99-111 p.Article in journal (Refereed) Published
Abstract [en]

Dendroarchaeology almost exclusively uses ring-width (RW) data for dating historical structures and artefacts. Such data can be used to date tree-ring sequences when regional climate dominates RW variability. However, the signal in RW data can be obscured due to site specific ecological influences (natural and anthropogenic) that impact crossdating success. In this paper, using data from Scotland, we introduce a novel tree-ring parameter (Blue Intensity BI) and explore its utility for facilitating dendrohistorical dating of conifer samples. BI is similar to latewood density as they both reflect the combined hemicellulose, cellulose and lignin content in the latewood cell walls of conifer species and the amount of these compounds is strongly controlled, at least for trees growing in temperature limited locations, by late summer temperatures. BI not only expresses a strong climate signal, but is also less impacted by site specific ecological influences. It can be concurrently produced with RW data from images of finely sanded conifer samples but at a significantly reduced cost compared to traditional latewood density. Our study shows that the probability of successfully crossdating historical samples is greatly increased using BI compared to RW. Furthermore, due to the large spatial extent of the summer temperature signal expressed by such data, a sparse multi -species conifer network of long BI chronologies across Europe could be used to date and loosely provenance imported material.

Place, publisher, year, edition, pages
2017. Vol. 78, 99-111 p.
Keyword [en]
Tree-ring dating, Dendroarchaeology, Blue Intensity, Conifers
National Category
Sociology History and Archaeology Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-142537DOI: 10.1016/j.jas.2016.11.011ISI: 000394200900009OAI: oai:DiVA.org:su-142537DiVA: diva2:1093912
Available from: 2017-05-08 Created: 2017-05-08 Last updated: 2017-05-08Bibliographically approved

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Gunnarson, Björn E.
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Department of Physical Geography
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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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