G.T. Omurova, V.V. Barinov, O.V. Kardash, E.A. Vaganov, and V.S. Myglan. Reconstruction of Extreme Paleoclimatic Events in Northwestern Siberia Using Ancient Wood from Fort Nadym
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RU

 
 

Archaeology, Ethnology & Anthropology
of Eurasia

46 (3) 2018

 

DOI: 10.17746/1563-0110.2018.46.3.032-040

Annotation:    

Reconstruction of Extreme Paleoclimatic Events
in Northwestern Siberia Using Ancient Wood from Fort Nadym

G.T. Omurova1, V.V. Barinov2, O.V. Kardash3, E.A. Vaganov2, and V.S. Myglan2

1Central-Asian Institute for Applied Geosciences, T. Frunze 73/2, Bishkek, 720027, Kyrgyz Republic

2Siberian Federal University, Pr. Svobodny 79, Krasnoyarsk, 660041, Russia

3Surgut State University, Lenina 1, Surgut, 628412, Russia

This study addresses the occurrence of damage to the anatomical structure (frost rings, light rings, and fluctuations of the wood density) and missing tree rings in wood samples from Fort Nadym—a medieval fort in the subarctic zone of Western Siberia. The chronology of extreme climatic events was reconstructed for the 1170–1505 period. We used multiple criteria such as severity of events; coincidence of structural pathologies and missing annual rings across all species; coincidence of structural anomalies with missing rings in specific years and years of minimal growth in chronologies. These criteria have allowed us to identify eight significant climatic events for the study area. The comparison of information on those events with that relating to other regions has shown that the 1259 event, evidenced by various sources, was likely global. Two other events, 1342 and 1466, are registered in northwestern Siberia and North America, and are therefore inter-regional. The 1347 and 1440 events concerned only northwestern Siberia. These years coincide with those of documented volcanic eruptions, peaks of acidity and aerosol development in polar ice cores, as well as the historical accounts of severe cold, crop failure, etc. All these events had a strong impact on socioeconomic processes in Western Siberia.

Keywords: Frost rings, climatic extremes, archaeological wood, Fort Nadym, Western Siberia.