@article{fdi:010062686,
  title = {{P}ersistent uplift of the {L}azufre volcanic complex ({C}entral {A}ndes) : {N}ew insights from {PCAIM} inversion of {I}n{SAR} time series and {GPS} data},
  author = {{R}{\'e}my, {D}ominique and {F}roger, {J}. {L}. and {P}erfettini, {H}ugo and {B}onvalot, {S}ylvain and {G}abalda, {G}erminal and {A}lbino, {F}. and {C}ayol, {V}. and {L}egrand, {D}. and {D}e {S}aint {B}lanquat, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e reanalyzed the surface displacements observed at the {L}azufre volcanic complex in the {S}outhern {A}ndean {C}entral {V}olcanic {Z}one using {GPS} measurements made between 2006 and 2008 and a large {I}n{SAR} data set. {W}e performed a detailed spatiotemporal analysis of the displacements using a principal component analysis inversion method ({PCAIM}). {T}he {PCAIM} reveals a source with no significant changes in shape and dimension and with a remarkably linear strength increase over the whole period of observation (i.e., 2003-2010). {T}hen we used a three-dimensional mixed boundary element method ({MBEM}) to invert the first component of surface displacement as obtained from {PCAIM}. {W}e explored a continuum of geometries from a shallow elliptic crack to a deep massive truncated elliptical cone that could represent a sill or a large magma chamber, respectively. {T}he best models indicate a large flat-topped source with a roof area between 40 and 670 km(2) and a depth of between 2 and 14 km below ground surface. {L}astly, on the basis of the limited data available for the thermomechanical structure of the crust in the {S}outhern {A}ndean {C}entral {V}olcanic {Z}one, we consider some possible scenarios to explain the spatial and temporal pattern of displacements at {L}azufre.},
  keywords = {{I}n{SAR} ; {GPS} ; volcano ; deformation ; {CHILI} ; {ANDES}},
  booktitle = {},
  journal = {{G}eochemistry {G}eophysics {G}eosystems},
  volume = {15},
  numero = {9},
  pages = {3591--3611},
  ISSN = {1525-2027},
  year = {2014},
  DOI = {10.1002/2014gc005370},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062686},
}