The sunspot cycle recorded in the thermoluminescence profile of the GT89/3 Ionian sea core

Cini Castagnoli, G. and Bonino, G. and Taricco, C. (1997) The sunspot cycle recorded in the thermoluminescence profile of the GT89/3 Ionian sea core. Il nuovo cimento C, 20 C (6). pp. 951-954. ISSN 1826-9885

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We measured the thermoluminescence (TL) depth profile of the GT89O3 shallow-water Ionian sea core. This profile has been transformed into a time series using the accurate sedimentation rate previously determined by radiometric and tephroanalysis methods. The TL measurements were performed in samples of equal thickness of 2 mm, corresponding to a time interval of 3.096 y. The TL time series spans A1800 y. The DFT power spectral densities in the decadal periodicity range of this TL series show significant periodicities at 10.7, 11.3 and 12 y closely similar to the periodicities present in the sunspot number series. These results confirm that the TL signal in recent sea sediments faithfully records the solar variability, as we previously proposed.

Item Type: Article
Additional Information: Paper presented at the VII Cosmic Physics National Conference, Rimini, October 26-28, 1994.
Uncontrolled Keywords: Sunspots, faculae, plages; marine geology and geophysics; thermoluminescence; conference proceedings
Subjects: 500 Scienze naturali e Matematica > 520 Astronomia e scienze connesse > 523 Specifici corpi e fenomeni celesti > 523.1 L'universo, galassie, quasar (Classificare qui l'Astronomia descrittiva, la Cosmologia in ambito astronomico)
500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 09 Feb 2018 14:04
Last Modified: 09 Feb 2018 14:04

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