Synchronization between tides and sustained oscillations of the hydrothermal system of Campi Flegrei (Italy)
Identifieur interne : 000311 ( Istex/Corpus ); précédent : 000310; suivant : 000312Synchronization between tides and sustained oscillations of the hydrothermal system of Campi Flegrei (Italy)
Auteurs : E. De Lauro ; S. De Martino ; M. Falanga ; S. PetrosinoSource :
- Geochemistry, Geophysics, Geosystems [ 1525-2027 ] ; 2013-08.
English descriptors
- KwdEn :
- Asb2, Average value, Azimuth, Azimuth time series, Azimuth values, Background signal, Bgng, Caldera, Campi, Campi flegrei, Campi flegrei caldera, Campi flegrei figure, Circular statistics, Different time scales, Diurnal modulation, Earth planet, Earth tides, Entire year, Erebus volcano, Faithful geyser, Falanga, Flegrei, Frequency band, Geophys, Hydrothermal, Hydrothermal system, Hydrothermal systems, Hydrothermal tremor, Important role, Incidence angle, Incidence angles, Independent component analysis, Italian peninsula, Local characteristics, Long records, Many authors, Martino, Microseismic noise, Morphostructural analysis, Ocean loading, Online issue, Oscillation, Periodic signal, Periodicity, Persistent oscillations, Petrosino, Polarization analysis, Polarization azimuth, Polarization azimuths, Polarization parameters, Polarization vector, Pozzuoli, Predominant components, Present analysis, Present work, Rayleigh criterion, Recent dynamics, Relative periodogram, Seismic, Seismic data, Seismic noise, Seismic recordings, Seismicity, Semidiurnal, Semidiurnal components, Shallower hydrothermal system, Slow variables, Solfatara, Solfatara volcano, Southern italy, Stromboli volcano, Synchronization, Temporal energy release, Tidal, Tidal constituents, Tidal modulation, Tidal periodicities, Tidal signals, Time evolution, Time scale, Time scales, Time series, Topographic effect, Tremor, Volcanic, Volcanic activity, Volcanic system, Volcano, Volcano seismology, Volcanol.
- Teeft :
- Asb2, Average value, Azimuth, Azimuth time series, Azimuth values, Background signal, Bgng, Caldera, Campi, Campi flegrei, Campi flegrei caldera, Campi flegrei figure, Circular statistics, Different time scales, Diurnal modulation, Earth planet, Earth tides, Entire year, Erebus volcano, Faithful geyser, Falanga, Flegrei, Frequency band, Geophys, Hydrothermal, Hydrothermal system, Hydrothermal systems, Hydrothermal tremor, Important role, Incidence angle, Incidence angles, Independent component analysis, Italian peninsula, Local characteristics, Long records, Many authors, Martino, Microseismic noise, Morphostructural analysis, Ocean loading, Online issue, Oscillation, Periodic signal, Periodicity, Persistent oscillations, Petrosino, Polarization analysis, Polarization azimuth, Polarization azimuths, Polarization parameters, Polarization vector, Pozzuoli, Predominant components, Present analysis, Present work, Rayleigh criterion, Recent dynamics, Relative periodogram, Seismic, Seismic data, Seismic noise, Seismic recordings, Seismicity, Semidiurnal, Semidiurnal components, Shallower hydrothermal system, Slow variables, Solfatara, Solfatara volcano, Southern italy, Stromboli volcano, Synchronization, Temporal energy release, Tidal, Tidal constituents, Tidal modulation, Tidal periodicities, Tidal signals, Time evolution, Time scale, Time scales, Time series, Topographic effect, Tremor, Volcanic, Volcanic activity, Volcanic system, Volcano, Volcano seismology, Volcanol.
Abstract
Long continuous seismic data recorded at five broadband seismic stations during 2006 at Campi Flegrei caldera have been analyzed. Introducing a coarse‐grained method, we evaluate the time evolution of amplitude and polarization of the seismic noise in the frequency band common to long‐period events. The series are modulated on tidal time scales: the root‐mean square is basically dominated by solar contribution, while the azimuth of the polarization vector shows lunar diurnal and semidiurnal constituents. In addition, we find that in the frequency band common to long‐period events the azimuths are polarized toward a specific area, suggesting that these persistent oscillations can be induced by the activity of the shallow geothermal reservoir.
Background seismic noise is a sustained polarized oscillations Persistent oscillations are induced by the upper hydrothermal system Lunar tidal modulation as marker of increased amount of fluids
Url:
DOI: 10.1002/ggge.20149
Links to Exploration step
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<front><div type="abstract">Long continuous seismic data recorded at five broadband seismic stations during 2006 at Campi Flegrei caldera have been analyzed. Introducing a coarse‐grained method, we evaluate the time evolution of amplitude and polarization of the seismic noise in the frequency band common to long‐period events. The series are modulated on tidal time scales: the root‐mean square is basically dominated by solar contribution, while the azimuth of the polarization vector shows lunar diurnal and semidiurnal constituents. In addition, we find that in the frequency band common to long‐period events the azimuths are polarized toward a specific area, suggesting that these persistent oscillations can be induced by the activity of the shallow geothermal reservoir.</div>
<div type="abstract">Background seismic noise is a sustained polarized oscillations Persistent oscillations are induced by the upper hydrothermal system Lunar tidal modulation as marker of increased amount of fluids</div>
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<profileDesc><abstract style="main"><p>Long continuous seismic data recorded at five broadband seismic stations during 2006 at Campi Flegrei caldera have been analyzed. Introducing a coarse‐grained method, we evaluate the time evolution of amplitude and polarization of the seismic noise in the frequency band common to long‐period events. The series are modulated on tidal time scales: the root‐mean square is basically dominated by solar contribution, while the azimuth of the polarization vector shows lunar diurnal and semidiurnal constituents. In addition, we find that in the frequency band common to long‐period events the azimuths are polarized toward a specific area, suggesting that these persistent oscillations can be induced by the activity of the shallow geothermal reservoir.</p>
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<item>Persistent oscillations are induced by the upper hydrothermal system</item>
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