Amoruso, A

Castellano, M

Crescentini, L

De Siena, L

Del Pezzo, E

Wakeford, Z

Geophysical Research Letters

English

De Siena, Luca

AMORUSO, ANTONELLA

Del Pezzo, Edoardo

Castellano, Mario

Wakeford, Zoë

CRESCENTINI, Luca

Archivio della Ricerca - Università di Salerno

Space-weighted seismic attenuation mapping of the aseismic source of Campi Flegrei 1983-84 unrest

Coda wave attenuation imaging is able to detect fluid/melt accumulation and ancient
magmatic bodies in volcanoes. Here we use recently developed space-weighting sensitivity functions
to invert for the spatial distributions of multifrequency coda wave attenuation (Q−1
c ), measured during
the largest monitored unrest at Campi Flegrei caldera (1983–1984). High-attenuation anomalies are
spatially correlated with the regions of highest structural complexities and cross faulting. They characterize
deep fluid circulation in and around the aseismic roots of the 1534 A.D. Mount Nuovo eruption and fluid
accumulation in the areas of highest hydrothermal hazard. Just offshore Pozzuoli, and at the highest
frequency (wavelengths of ∼150 m), the main cause of ground deformation and seismicity during the
unrest is an aseismic low-attenuation circular anomaly, similar in shape and nature to those produced by
ancient magmatic reservoirs and active sills at other volcanoes.Published1740-17482V. Struttura e sistema di alimentazione dei vulcani4V. Dinamica dei processi pre-eruttiviJCR Journa

Amoruso, Antonella

Wakeford, Zoe

Crescentini, Luca

Earth-prints

L. De Siena

A. Amoruso

E. Del Pezzo

Z. Wakeford

M. Castellano

L. Crescentini

Crossref

OA Earth-prints Repository

Coda wave attenuation imaging is able to detect fluid/melt accumulation and ancient magmatic bodies in volcanoes. Here we use recently developed space-weighting sensitivity functions to invert for the spatial distributions of multifrequency coda wave attenuation (Qc-1), measured during the largest monitored unrest at Campi Flegrei caldera (1983–1984). High-attenuation anomalies are spatially correlated with the regions of highest structural complexities and cross faulting. They characterize deep fluid circulation in and around the aseismic roots of the 1534 A.D. Mount Nuovo eruption and fluid accumulation in the areas of highest hydrothermal hazard. Just offshore Pozzuoli, and at the highest frequency (wavelengths of ∼150 m), the main cause of ground deformation and seismicity during the unrest is an aseismic low-attenuation circular anomaly, similar in shape and nature to those produced by ancient magmatic reservoirs and active sills at other volcanoes

AMORUSO, Antonella

Pezzo, E. Del

Wakeford, Z.

Castellano, M.

Space-weighted seismic attenuation mapping of the aseismic source of Campi Flegrei 1983–1984 unrest

Aberdeen University Research

https://aura.abdn.ac.uk/bitstream/2164/9194/1/Siena_et_al_2017_Geophysical_Research_Letters.pdf

Space-weighted seismic attenuation mapping of the aseismic source of Campi Flegrei 1983-84 unrest

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Archivio della Ricerca - Università di Salerno

Earth-prints

Crossref

OA Earth-prints Repository

Archivio della Ricerca - Università di Salerno

Aberdeen University Research