Inferences on the source of long-period seismicity at Campi Flegrei from polarization analysis and reconstruction of the asymptotic dynamics
作者： M. Falanga , S. Petrosino
DOI: 10.1007/S00445-012-0612-2
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摘要: In the present paper, we analyse long-period (LP) events and seismic noise recorded at Campi Flegrei during uplift episode of 2004–2006. The results a detailed polarization analysis indicate that large number LPs detected crisis were accompanied by sustained activity consisting very low-energy volcanic signals. These weak signals, which are usually absent in ambient studied area, LP have similar properties, namely they radially polarized towards same source. dataset analysed allows us to study statistics polarization, leading extraction average properties An estimate complexity system can be provided degrees freedom necessary describe asymptotic dynamics reconstructed phase space. This shows both signals described low-dimensional dynamical system, while unrelated is higher dimensional. Based on these observations, interpret phenomena observed framework theory self-oscillating systems, represent self-oscillations generated persistent hydrothermal
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