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Synchronization between tides and sustained oscillations of the hydrothermal system of Campi Flegrei (Italy)

Identifieur interne : 000022 ( Main/Exploration ); précédent : 000021; suivant : 000023

Synchronization between tides and sustained oscillations of the hydrothermal system of Campi Flegrei (Italy)

Auteurs : E. De Lauro [Italie] ; S. De Martino [Italie] ; M. Falanga [Italie] ; S. Petrosino [Italie]

Source :

Geochemistry, Geophysics, Geosystems [ 1525-2027 ] ; 2013-08.

RBID : ISTEX:F715E20A06066EAD110CF88E9052A8C9333E974F

English descriptors

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:

https://api.istex.fr/document/F715E20A06066EAD110CF88E9052A8C9333E974F/fulltext/pdf

DOI: 10.1002/ggge.20149

Affiliations:

Italie

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Le document en format XML

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<term>Present work</term>
<term>Rayleigh criterion</term>
<term>Recent dynamics</term>
<term>Relative periodogram</term>
<term>Seismic</term>
<term>Seismic data</term>
<term>Seismic noise</term>
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<term>Time evolution</term>
<term>Time scale</term>
<term>Time scales</term>
<term>Time series</term>
<term>Topographic effect</term>
<term>Tremor</term>
<term>Volcanic</term>
<term>Volcanic activity</term>
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<term>Volcano</term>
<term>Volcano seismology</term>
<term>Volcanol</term>
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<term>Azimuth</term>
<term>Azimuth time series</term>
<term>Azimuth values</term>
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<term>Bgng</term>
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<term>Campi</term>
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<term>Circular statistics</term>
<term>Different time scales</term>
<term>Diurnal modulation</term>
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<term>Earth tides</term>
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<term>Erebus volcano</term>
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<term>Long records</term>
<term>Many authors</term>
<term>Martino</term>
<term>Microseismic noise</term>
<term>Morphostructural analysis</term>
<term>Ocean loading</term>
<term>Online issue</term>
<term>Oscillation</term>
<term>Periodic signal</term>
<term>Periodicity</term>
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<term>Petrosino</term>
<term>Polarization analysis</term>
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<term>Polarization azimuths</term>
<term>Polarization parameters</term>
<term>Polarization vector</term>
<term>Pozzuoli</term>
<term>Predominant components</term>
<term>Present analysis</term>
<term>Present work</term>
<term>Rayleigh criterion</term>
<term>Recent dynamics</term>
<term>Relative periodogram</term>
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<term>Seismic data</term>
<term>Seismic noise</term>
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<term>Slow variables</term>
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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>
</front>
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Synchronization between tides and sustained oscillations of the hydrothermal system of Campi Flegrei (Italy)

Synchronization between tides and sustained oscillations of the hydrothermal system of Campi Flegrei (Italy)

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

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Pour mettre un lien sur cette page dans le réseau Wicri