@article{fdi:010061435,
  title = {{L}ong-period seismicity in the shallow volcanic edifice formed from slow-rupture earthquakes},
  author = {{B}ean, {C}. {J}. and {D}e {B}arros, {L}. and {L}okmer, {I}. and {M}{\'e}taxian, {J}ean-{P}hilippe and {B}rien, {G}. {O}. and {M}urphy, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{F}orecasting of volcanic eruptions is still inadequate, despite technological advances in volcano monitoring. {I}mproved forecasting requires a deeper understanding of when unrest will lead to an actual eruption. {S}hallow, long-period seismic events often precede volcanic eruptions and are used in forecasting. {T}hey are thought to be generated by resonance in fluid-filled cracks or conduits, indicating the presence of near-surface magmatic fluids. {H}ere we analyse very-high-resolution seismic data from three active volcanoes-{M}ount {E}tna in {I}taly, {T}urrialba {V}olcano in {C}osta {R}ica and {U}binas {V}olcano in {P}eru-measured between 2004 and 2009. {W}e find that seismic resonance is dependent on the wave propagation path and that the sources for the long-period seismic waves are composed of short pulses. {W}e use a numerical model to show that slow-rupture failure in unconsolidated volcanic materials can reproduce all key aspects of these observations. {T}herefore, contrary to current interpretations, we suggest that short-duration long-period events are not direct indicators of fluid presence and migration, but rather are markers of deformation in the upper volcanic edifice. {W}e suggest that long-period volcano seismicity forms part of the spectrum between slow-slip earthquakes and fast dynamic rupture, as has been observed in non-volcanic environments.},
  keywords = {{ITALIE} ; {COSTA} {RICA} ; {PEROU}},
  booktitle = {},
  journal = {{N}ature {G}eoscience},
  volume = {7},
  numero = {1},
  pages = {71--75},
  ISSN = {1752-0894},
  year = {2014},
  DOI = {10.1038/ngeo2027},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061435},
}