eprintid: 2200 rev_number: 9 eprint_status: archive userid: 6 dir: disk0/00/00/22/00 datestamp: 2019-03-07 14:11:02 lastmod: 2019-03-07 14:11:02 status_changed: 2019-03-07 14:11:02 type: article metadata_visibility: show creators_name: Pandolfi, Daniela creators_name: Bean, C. J. creators_name: Saccorotti, Gilberto corp_creators: Seismology and Computational Rock Physics Laboratory, School of Geological Sciences, University College Dublin, Dublin, Ireland corp_creators: Seismology and Computational Rock Physics Laboratory, School of Geological Sciences, University College Dublin, Dublin, Ireland corp_creators: Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Vesuviano, Napoli, Italy title: Coda wave interferometric detection of seismic velocity changes associated with the 1999 M = 3.6 event at Mt. Vesuvius subjects: O subjects: RIt divisions: EPOS-IP full_text_status: none abstract: We detect seismic wave velocity changes at Mt. Vesuvius, using doublets and the Coda Wave Interferometry method. The high sensitivity of multiply scattered coda waves to temporal changes in the medium allows us to detect velocity variation smaller than 0.4%. We use 17 doublets, some of them grouped in families of multiplets, spanning January 1996 to December 1999. Data show a systematic increase in velocity from 1996 to end‐September 1999, followed by a rapid drop in velocity. This drop immediately precedes a sustained swarm of VT‐type earthquakes, including the 9th October 1999 M = 3.6 event, the largest in the region since at least 1972. We propose a long term fluid pressurization followed by influx as a possible causative mechanism. date: 2006 date_type: published publication: Geophysical Research Letters volume: 33 number: 6 publisher: American Geophysical Union id_number: doi:10.1029/2005GL025355 issn: 0094-8276 official_url: http://doi.org/10.1029/2005GL025355 access_IS-EPOS: limited software_references: Coda_wave_interferometry owner: Publisher citation: Pandolfi, Daniela and Bean, C. J. and Saccorotti, Gilberto (2006) Coda wave interferometric detection of seismic velocity changes associated with the 1999 M = 3.6 event at Mt. Vesuvius. Geophysical Research Letters, 33 (6). DOI: https://doi.org/10.1029/2005GL025355