@article{fdi:010068208,
  title = {{M}ass budget partitioning during explosive eruptions : insights from the 2006 paroxysm of {T}ungurahua volcano, {E}cuador},
  author = {{B}ernard, {J}. and {E}ychenne, {J}. and {L}e {P}ennec, {J}ean-{L}uc and {N}arvaez, {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{H}ow and how much the mass of juvenile magma is split between vent-derived tephra, {PDC} deposits and lavas (i.e., mass partition) is related to eruption dynamics and style. {E}stimating such mass partitioning budgets may reveal important for hazard evaluation purposes. {W}e calculated the volume of each product emplaced during the {A}ugust 2006 paroxysmal eruption of {T}ungurahua volcano ({E}cuador) and converted it into masses using high-resolution grainsize, componentry and density data. {T}his data set is one of the first complete descriptions of mass partitioning associated with a {VEI} 3 andesitic event. {T}he scoria fall deposit, near-vent agglutinate and lava flow include 28, 16 and 12 wt. % of the erupted juvenile mass, respectively. {M}uch (44 wt. %) of the juvenile material fed {P}yroclastic {D}ensity {C}urrents (i.e., dense flows, dilute surges and co-{PDC} plumes), highlighting that tephra fall deposits do not depict adequately the size and fragmentation processes of moderate {PDC}-forming event. {T}he main parameters controlling the mass partitioning are the type of magmatic fragmentation, conditions of magma ascent, and crater area topography. {C}omparisons of our data set with other {PDC}-forming eruptions of different style and magma composition suggest that moderate andesitic eruptions are more prone to produce {PDC}s, in proportions, than any other eruption type. {T}his finding may be explained by the relatively low magmatic fragmentation efficiency of moderate andesitic eruptions. {T}hese mass partitioning data reveal important trends that may be critical for hazard assessment, notably at frequently active andesitic edifices.},
  keywords = {mass partitioning ; eruptive budgets ; intermediate andesitic explosive ; eruptions ; volume-to-mass conversion ; eruption size ; {T}ungurahua volcano ; {EQUATEUR} ; {TUNGURAHUA} {VOLCAN}},
  booktitle = {},
  journal = {{G}eochemistry {G}eophysics {G}eosystems},
  volume = {17},
  numero = {8},
  pages = {3224--3240},
  ISSN = {1525-2027},
  year = {2016},
  DOI = {10.1002/2016gc006431},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068208},
}