eprintid: 2201 rev_number: 9 eprint_status: archive userid: 6 dir: disk0/00/00/22/01 datestamp: 2019-03-07 14:14:15 lastmod: 2019-03-07 14:14:15 status_changed: 2019-03-07 14:14:15 type: article metadata_visibility: show creators_name: Zaccarelli, L. creators_name: Pandolfi, Daniela creators_name: Bianco, F. creators_name: Saccorotti, Gilberto creators_name: Bean, Christopher J. creators_name: Pezzo, E. Del corp_creators: Istituto Nazionale di Geofisica e Vulcanologia, sezione di Napoli ‘Osservatorio Vesuviano’, Italy. corp_creators: Seismological and Computational Rock Physics Laboratory, School of Geological Sciences, University College Dublin, Ireland corp_creators: Istituto Nazionale di Geofisica e Vulcanologia, sezione di Napoli ‘Osservatorio Vesuviano’, Italy. corp_creators: Istituto Nazionale di Geofisica e Vulcanologia, sezione di Pisa, Italy corp_creators: Seismological and Computational Rock Physics Laboratory, School of Geological Sciences, University College Dublin, Ireland corp_creators: Istituto Nazionale di Geofisica e Vulcanologia, sezione di Napoli ‘Osservatorio Vesuviano’, Italy. title: Temporal changes in seismic wave propagation towards the end of the 2002 Mt Etna eruption subjects: MP2 subjects: RIt divisions: EPOS-IP full_text_status: none abstract: Stress can undergo rapid temporal changes in volcanic environments, and this is particularly true during eruptions. We use two independent methods, coda wave interferometry (CWI) and shear wave splitting (SWS) analysis to track stress related wave propagation effects during the waning phase of the 2002 NE fissure eruption at Mt Etna. CWI is used to estimate temporal changes in seismic wave velocity, while SWS is employed to monitor changes in elastic anisotropy. We analyse seismic doublets, detecting temporal changes both in wave velocities and anisotropy, consistent with observed eruptive activity. In particular, syn-eruptive wave propagation changes indicate a depressurization of the system, heralding the termination of the eruption, which occurs three days later. date: 2009 date_type: published publication: Geophysical Journal International volume: 178 number: 3 publisher: Oxford University Press pagerange: 1779-1788 id_number: doi:10.1111/j.1365-246X.2009.04219.x issn: 0956-540X official_url: http://doi.org/10.1111/j.1365-246X.2009.04219.x access_IS-EPOS: limited software_references: Coda_wave_interferometry owner: Publisher citation: Zaccarelli, L. and Pandolfi, Daniela and Bianco, F. and Saccorotti, Gilberto and Bean, Christopher J. and Pezzo, E. Del (2009) Temporal changes in seismic wave propagation towards the end of the 2002 Mt Etna eruption. Geophysical Journal International, 178 (3). pp. 1779-1788. DOI: https://doi.org/10.1111/j.1365-246X.2009.04219.x