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Sequence of eruptive events in the Vesuvio area recorded in shallow-water Ionian Sea sediments

Taricco, Carla and Alessio, Silvia and Vivaldo, Gianna Sequence of eruptive events in the Vesuvio area recorded in shallow-water Ionian Sea sediments. Nonlinear Processes in Geophysics, 15 (1). pp. 25-32. ISSN 1607-7946 (2008)

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Abstract

The dating of the cores we drilled from the Gallipoli terrace in the Gulf of Taranto (Ionian Sea), previously obtained by tephroanalysis, is checked by applying a method to objectively recognize volcanic events. This automatic statistical procedure allows identifying pulse-like features in a series and evaluating quantitatively the confidence level at which the significant peaks are detected. We applied it to the 2000-years-long pyroxenes series of the GT89-3 core, on which the dating is based. The method confirms the dating previously performed by detecting at a high confidence level the peaks originally used and indicates a few possible undocumented eruptions. Moreover, a spectral analysis, focussed on the long-term variability of the pyroxenes series and performed by several advanced methods, reveals that the volcanic pulses are superimposed to a millennial trend and a 400 years oscillation.

Item Type: Article
Identification Number: 10.5194/npg-15-25-2008
Subjects: Q Science > QC Physics
Q Science > QE Geology
Research Area: Economics and Institutional Change
Depositing User: Gianna Vivaldo
Date Deposited: 07 Nov 2014 13:18
Last Modified: 25 Mar 2015 09:16
URI: http://eprints.imtlucca.it/id/eprint/2349

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