@article{fdi:010093463,
  title = {{P}recursory velocity changes prior to the 2019 paroxysms at {S}tromboli volcano, {I}taly, from coda wave interferometry},
  author = {{Y}ates, {A}. {S}. and {C}audron, {C}. and {M}ordret, {A}. and {L}esage, {P}. and {C}annata, {A}. and {C}annavo, {F}. and {L}ecocq, {T}. and {P}inel, {V}irginie and {Z}accarelli, {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{O}pen-conduit basaltic volcanoes are susceptible to sudden transitions from mild activity to violent explosive eruptions with little to no warning. {S}uch was the case at {S}tromboli in the summer of 2019, when two paroxysmal explosions occurred within approximately two months ({J}uly 3 and {A}ugust 28). {W}e apply coda wave interferometry to identify possible transitions in behavior in the build-up to these events, computing seismic velocity changes using five broadband seismic stations on the volcano between 2013-2022. {T}his timeframe encompasses a range of volcanic activity including effusive activity, major explosions and paroxysms. {C}ross-correlation functions are computed both between pairs of stations and single-station cross-components in multiple frequency bands that allow the sampling of different depths (between approximately 100-1000 m) within the plumbing system. {S}hallow velocity changes (1-2 {H}z and 2-4 {H}z) reveal mid-to-long term precursors prior to the paroxysms in 2019. {F}or example, we observe that 2-4 {H}z velocities recorded at the station closest to the active crater show an increase of 0.2-0.3 % relative to velocities recorded at other stations. {T}his increase is largely accumulated from mid-2017, coinciding with previously observed heightened activity at the volcano, peaking approximately one month prior to the first paroxysm. {A} long-term decrease is also observed in deeper velocity changes (0.5-1.0 {H}z) during the same time interval. {I}t is hypothesized that these changes represent greater magma overpressure from increased volatile input from depth. {T}he different response in the shallow subsurface may reflect a local response due to the same source within the vicinity close of the crater terrace. {T}hese findings illustrate how coda wave interferometry can provide meaningful insights into the evolving dynamics of open-conduit basaltic volcanoes.},
  keywords = {{C}oda wave interferometry ; {V}olcano monitoring ; {S}eismic velocity changes ; {ITALIE} ; {STROMBOLI} {VOLCAN}},
  booktitle = {},
  journal = {{V}olcanica},
  volume = {8},
  numero = {1},
  pages = {203--223},
  ISSN = {2610-3540},
  year = {2025},
  DOI = {10.30909/vol/cyrk4139},
  URL = {https://www.documentation.ird.fr/hor/fdi:010093463},
}