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Use of larch light rings for evaluation of volcanic explosity index
Institute of Plant and Animal Ecology, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russia
Journal: Geophysical processes and biosphere
Tome: 16
Number: 1
Year: 2017
Pages: 23-41
UDK: 551.21.032:630*561.24(212.3:571.1/.5)
DOI: 10.21455/GPB2017.1-2
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Gurskaya M. Use of larch light rings for evaluation of volcanic explosity index // . 2017. Т. 16. № 1. С. 23-41. DOI: 10.21455/GPB2017.1-2
@article{GurskayaUse2017,
author = "Gurskaya, M.",
title = "Use of larch light rings for evaluation of volcanic explosity index",
journal = "Geophysical processes and biosphere",
year = 2017,
volume = "16",
number = "1",
pages = "23-41",
doi = "10.21455/GPB2017.1-2",
language = "English"
}
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Keywords: VEI, Siberian forest-tundra, larch, light rings, volcano eruption
Аnnotation: Volcanic eruptions lead to a global short-term drop in air temperature, including a shortening of the growing season. A reaction to these short-term climatic changes is the formation of light rings in the Siberian larches growing in the Siberian Subarctic area. Based on the analysis of larch cores collected at 18 points in the northern forest-tundra from 67°32´ to 167°40´ N, relationships of the mass formation and spatial spread of the light rings with the Volcanic Explosivity Index (VEI) are revealed. The eruptions with VEI = 6 and higher statistically differ from weaker ones by the amount of light rings and their spatial distribution. The doubtful dates of several strong eruptions are discussed.
