@article{fdi:010064737, title = {{R}evised interpretation of recent {I}n{SAR} signals observed at {L}laima volcano ({C}hile)}, author = {{R}{\'e}my, {D}ominique and {C}hen, {Y}u and {F}roger, {J}. {L}. and {B}onvalot, {S}ylvain and {C}ordoba, {L}. and {F}ustos, {J}.}, editor = {}, language = {{ENG}}, abstract = {{W}e analyzed {C} band and {L} band interferometric synthetic aperture radar ({I}n{SAR}) data acquired from 2003 to 2011 to search for volcanic deformations at {L}laima volcano, {S}outhern {A}ndes (38.69 degrees {S}, 71.73 degrees {W}). {T}here, specific environmental conditions (steep slopes, snow- or ice-capped summit, dense vegetation cover, and strong tropospheric artifacts) and limited amount of radar data available make it challenging to accurately measure ground surface displacement with {I}n{SAR}. {T}o overcome these difficulties, we first performed a careful analysis of the water vapor variations using {M}edium-{R}esolution {I}maging {S}pectrometer and {M}oderate {R}esolution {I}maging {S}pectroradiometer near-infrared water vapor products and then we inverted wrapped interferograms for both topographic correlated phase delays and a simple model source strength. {I}n the light of our results, we conclude that there is no detectable ground displacement related to a deep magmatic source for the 2003-2011 period and that most of the fringes observed in the interferograms were produced by tropospheric delays.}, keywords = {{I}n{SAR} ; atmospheric artifacts ; volcano ground deformation ; {CHILI} ; {ANDES}}, booktitle = {}, journal = {{G}eophysical {R}esearch {L}etters}, volume = {42}, numero = {10}, pages = {3870--3879}, ISSN = {0094-8276}, year = {2015}, DOI = {10.1002/2015gl063872}, URL = {https://www.documentation.ird.fr/hor/fdi:010064737}, }