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Reconstruction of the Annual Variation in Solar Radio Flux and the Catania Sunspot Area from Tree Ring-index Time Series

Published online by Cambridge University Press:  25 April 2016

J. O. Murphy ,
H. Sampson ,
T. T. Veblen  and
R. Villalba
J. O. Murphy
Affiliation:
Department of Mathematics, Monash University, Clayton, Vic. 3168
H. Sampson
Affiliation:
Department of Mathematics, Monash University, Clayton, Vic. 3168
T. T. Veblen
Affiliation:
Department of Geography, University of Colorado, Boulder, CO 80309, USA
R. Villalba
Affiliation:
Department of Geography, University of Colorado, Boulder, CO 80309, USA
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Abstract

Four tree ring-index site chronologies, representing standardised annual growth rates for spruce trees growing at high altitude sites in Colorado, have been employed as proxy data in a regression model for the annual variation of solar radio flux at 2800 MHz (F10·7) and the Catania sunspot area (Ac). These dendrochronological time series all exhibit significant power spectrum peaks at about 11 years and separately correlate with the annual values of Rz, F10·7 and Ac, as solar activity indicators. The two models constructed give the cyclic variation of F10·7 and Ac back to AD1673.

Type
Solar and Solar System
Information
Publications of the Astronomical Society of Australia , Volume 11 , Issue 2 , August 1994 , pp. 164 - 169
Copyright
Copyright © Astronomical Society of Australia 1994

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