Study on the Long-Period source mechanism at Campi Flegrei (Italy) by a multi-parametric analysis

2012 ◽  
Vol 206-207 ◽  
pp. 16-30 ◽  
Author(s):  
Enza De Lauro ◽  
Mariarosaria Falanga ◽  
Simona Petrosino
Keyword(s):  
Parametric Analysis ◽  
Source Mechanism ◽  
Campi Flegrei ◽  
Long Period

scholarly journals Source mechanism of long-period events recorded by a high-density seismic network during the 2008 eruption on Mount Etna

2011 ◽  
Vol 116 (B1) ◽  
Author(s):  
L. De Barros ◽  
I. Lokmer ◽  
C. J. Bean ◽  
G. S. O'Brien ◽  
G. Saccorotti ◽  
...  
Keyword(s):  
High Density ◽  
Seismic Network ◽  
Source Mechanism ◽  
Mount Etna ◽  
Long Period

Source mechanism of very-long-period signals accompanying dome growth activity at Merapi volcano, Indonesia

2002 ◽  
Vol 29 (23) ◽  
pp. 33-1-33-4 ◽  
Author(s):  
D. Hidayat ◽  
B. Chouet ◽  
B. Voight ◽  
P. Dawson ◽  
A. Ratdomopurbo
Keyword(s):  
Source Mechanism ◽  
Merapi Volcano ◽  
Long Period ◽  
Dome Growth ◽  
Growth Activity

scholarly journals Correction to “Source mechanism of very-long-period signals accompanying dome growth activity at Merapi volcano, Indonesia”

2003 ◽  
Vol 30 (10) ◽  
pp. n/a-n/a ◽  
Author(s):  
D. Hidayat ◽  
B. Chouet ◽  
B. Voight ◽  
P. Dawson ◽  
A. Ratdomopurbo
Keyword(s):  
Source Mechanism ◽  
Merapi Volcano ◽  
Long Period ◽  
Dome Growth ◽  
Growth Activity

scholarly journals Interaction between seismicity and deformation on different time scales in volcanic areas: Campi Flegrei and Stromboli

2019 ◽  
Vol 52 ◽  
pp. 1-8 ◽  
Author(s):  
Mariarosaria Falanga ◽  
Enza De Lauro ◽  
Simona Petrosino ◽  
Salvatore De Martino
Keyword(s):  
Stationary Phase ◽  
Time Scales ◽  
Volcanic Activity ◽  
High Frequency ◽  
Campi Flegrei ◽  
Feeding System ◽  
Low Frequencies ◽  
Long Period ◽  
Volcanic Processes ◽  
Different Time Scales

Abstract. We study oscillations recorded at Stromboli and Campi Flegrei by different sensors: seismometers, strainmeters and tiltmeters. We examine both the high-frequency (>0.5 Hz) portion of the spectrum and very long period signals up to tidal scales. In this context, seismicity and deformation are investigated on different time scales (from minutes to days/years) in order to identify the basic elements of their interaction, whose understanding should provide new insights on the predictive models. In this work, the strict relation of tides and volcanic processes is shown. At Stromboli, indeed the transition from the stationary phase to the non-stationary phase seems to have a tidal precursor that is related to the duration of the crisis. The subsequent volcanic activity is interpreted as the response of the volcano to restore the equilibrium condition. The moveout from equilibrium produces, first, variations in the standard statistics of explosions, then leads to effusive stage and to a pressure drop in the shallow feeding system. That process induces the nucleation of a gas bubble and the excitation of low frequencies. Campi Flegrei seismicity shows a correlation between the diurnal solar solid tide and the energy released by the long period signals, indicating that the whole mechanism is modulated on a tidal scale. In other words, in the case of Stromboli, a departure from the equilibrium state is marked by solid tide variations in a certain frequency band. On the other hand, at Campi Flegrei diurnal to annual solid tides modulate an increase of volcanic activity.

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