@article{fdi:010081393,
  title = {{M}onitoring and forecasting hazards from a slow growing lava dome using aerial imagery, tri-stereo {P}leiades-1{A}/{B} imagery and {PDC} numerical simulation},
  author = {{M}oussallam, {Y}ves and {B}arnie, {T}. and {A}migo, {A}. and {K}elfoun, {K}. and {F}lores, {F}. and {F}ranco, {L}. and {C}ardona, {C}. and {C}ordova, {L}. and {T}oloza, {V}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n {D}ecember of 2017, a lava dome emerged at the {N}evados de {C}hillan volcanic complex in the southern {A}ndean volcanic zone, {C}hile, at the base of a summit crater excavated by explosions during two preceding years of unrest. {T}his posed a number of potential hazards to the surrounding touristic region, so the eruption was carefully monitored. {S}tructure from {M}otion techniques were used to generate {DEM}s from satellite and aerial images, from which several useful measurements could be made. {D}ome growth was characterised at an unprecedented resolution, allowing for the calculation of discharge rates and effusion rates in near real time. {A} simple model fit to the distance between the dome and crater rim predicted relatively accurately the arrival of the dome toe at the crater rim and the onset of dome collapse outside the crater. {S}imulations of the path and extent that potential pyroclastic density currents ({PDC}) generated by dome collapse would follow showed that {PDC} were not directly threatening populated areas. {O}ver its life cycle as of {A}ugust 2019, the dome growth was punctuated by frequent explosions, averaging around 30 per day, one of which generated a minor 600 m long {PDC} on 13 to 15 of {J}uly 2018. {T}here appears to be a positive correlation between explosion frequency and lava dome growth rate suggesting that both explosive and effusive processes can coexist, operating at different timescales but responding to the same driving force. {A} positive correlation is apparent between dome growth rate and seismic activity such as the frequency of tremor and long-period earthquakes suggesting that these might be used as proxies to estimate effusion rate. {I}nitial lava dome effusion rates of 1730 +/- 110 m(3)/day in {J}anuary 2018 declined to 100 +/- 150 m(3)/day in {J}une 2019. {T}hese growth rates are extremely slow when compared to other lava domes, about 300 to 600 times slower than the lava domes at {M}t {U}nzen (1992) and {M}t. {S}t. {H}elens (1980).},
  keywords = {structure from motion ; volcanic dome ; photogrammetry ; dome collapse ; dome growth ; pyroclastic flow ; {CHILI} ; {ANDES} ; {NEVADOS} {DE} {CHILLAN}},
  booktitle = {},
  journal = {{E}arth and {P}lanetary {S}cience {L}etters},
  volume = {564},
  numero = {},
  pages = {116906 [15 ]},
  ISSN = {0012-821{X}},
  year = {2021},
  DOI = {10.1016/j.epsl.2021.116906},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081393},
}