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Authors: Ricco, C.*
Del Gaudio, C.*
Quareni, F.*
Marzocchi, W.*
Title: Spectral analysis of the clinometric data at the Phlegraean Fields from 1992 to 1998
Issue Date: Oct-2000
Series/Report no.: 43/5
Keywords: Spectral analysis
Phlegraean Fields
clinometric data
Abstract: Ground deformation is one of the most important precursors for volcanic eruptions. In this respect, the surveillance of volcanoes has greatly benifited from the continuous recording of clinometric data, which represents an economical and reliable way to identify significant ground deformations. In this paper we analyize the clinometric data recorded at the Phlegraean Fields, Italy, in the period 1992-1998 through a classical time series analysis. We show that these techniques can be advantageously used to discriminate between the signals relative to the internal and external processes. In particular, we find that high-frequency fluctuations are mainly due to thermal and atmospheric pressure variations, while at lower frequencies we highlight a constant subsidence, without any evidence of volcanic reactivation.
Appears in Collections:04.08.06. Volcano monitoring
04.02.05. Downhole, radioactivity, remote sensing, and other methods
Annals of Geophysics

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