A continuous multimillennial ring-width chronology in Yamal, northwestern Siberia

Subfossil wood in alluvial deposits of the Yadayakhodyyakha River.
Subfossil wood in alluvial deposits of the Yadayakhodyyakha River.
A continuous multimillennial ring-width chronology in Yamal, northwestern Siberia
Holocene
Vol. 12, Issue 6 (December 2002)


Rashit M. Hantemirov and Stepan G. Shiyatov

Institute of Plant and Animal Ecology, Ural Division of the Russian Academy of Sciences, 8 Marta Street 202, Ekaterinburg 620144, Russia

ABSTRACT:
Remains of subfossil Siberian larch trees in the Holocene deposits of the Yamal Peninsula (Western Siberia) have been collected in order to develop a continuous, multimillennium tree-ring-width chronology. This work has produced a calendar-age dated 4000-year (2000 BC to AD 1996) series. From these data, summer-temperature variability in this region has been estimated on annual to multidecadal timescales. Radiocarbon dating of selected older material shows that the oldest subfossil wood is 9400 years old and the dates of the sampled material are generally distributed evenly through time. It will, therefore, be possible to develop a tree-ring chronology for more than nine millennia. An initial assessment of long-term fluctuations in Yamal summer warmth has been realized through the reconstruction of tree-line dynamics using a combination of dendrochronological (absolute) dated material and less precisely (radiocarbon) dated older subfossils.

DATA:
Download the data from this study:
Yamal Peninsula tree-ring chronology and summer temperature reconstruction

To read or view the full study, please visit the Ingenta website.
It was published in Holocene Vol. 12, Issue 6 (December 2002)

This work was partly supported by the European Commission 'Environment and Climate Programme' under contract ENV4-CT95-0127 (ADVANCE 10-K) and the Russian Foundation for Basic Researches (grant 01-05-65218).


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22 April 2003