@article{fdi:010070262,
  title = {{M}agmatic gas percolation through the old lava dome of {E}l {M}isti volcano},
  author = {{M}oussallam, {Y}. and {P}eters, {N}. and {M}asias, {P}. and {A}paza, {F}. and {B}arnie, {T}. and {S}chipper, {C}. {I}. and {C}urtis, {A}. and {T}amburello, {G}. and {A}iuppa, {A}. and {B}ani, {P}hilipson and {G}iudice, {G}. and {P}ieri, {D}. and {D}avies, {A}. {G}. and {O}ppenheimer, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he proximity of the major city of {A}requipa to {E}l {M}isti has focused attention on the hazards posed by the active volcano. {S}ince its last major eruption in the fifteenth century, {E}l {M}isti has experienced a series of modest phreatic eruptions and fluctuating fumarolic activity. {H}ere, we present the first measurements of the compositions of gas emitted from the lava dome in the summit crater. {T}he gas composition is found to be fairly dry with a {H}2{O}/{SO}2 molar ratio of 32 +/- 3, a {CO}2/ {SO}2 molar ratio of 2.7 +/- 0.2, a {H}2{S}/{SO}2 molar ratio of 0.23 +/- 0.02 and a {H}-2/{SO}2 molar ratio of 0.012 +/- 0.002. {T}his magmatic gas signature with minimal evidence of hydrothermal or wall rock interaction points to a shallow magma source that is efficiently outgassing through a permeable conduit and lava dome. {F}ield and satellite observations show no evolution of the lava dome over the last decade, indicating sustained outgassing through an established fracture network. {T}his stability could be disrupted if dome permeability were to be reduced by annealing or occlusion of outgassing pathways. {C}ontinued monitoring of gas composition and flux at {E}l {M}isti will be essential to determine the evolution of hazard potential at this dangerous volcano.},
  keywords = {{V}olcanic hazard ; {A}requipa ; {O}utgassing ; {ASTER} ; {M}ulti-{GAS} ; {T}rail by fire ; {PEROU} ; {EL} {MISTI} {VOLCAN}},
  booktitle = {},
  journal = {{B}ulletin of {V}olcanology},
  volume = {79},
  numero = {6},
  pages = {art. 46 [11 p.]},
  ISSN = {0258-8900},
  year = {2017},
  DOI = {10.1007/s00445-017-1129-5},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070262},
}