Revised interpretation of recent InSAR signals observed at Llaima volcano (Chile)

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dc.contributor.authorRemy, D.
dc.contributor.authorChen, Y.
dc.contributor.authorFroger, J. L.
dc.contributor.authorBonvalot, S.
dc.contributor.authorCordoba, L.
dc.contributor.authorFustos, J.
dc.date2015
dc.date.accessioned2021-04-30T17:06:07Z
dc.date.available2021-04-30T17:06:07Z
dc.description.abstractWe analyzed C band and L band interferometric synthetic aperture radar (InSAR) data acquired from 2003 to 2011 to search for volcanic deformations at Llaima volcano, Southern Andes (38.69 degrees S, 71.73 degrees W). There, 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 InSAR. To overcome these difficulties, we first performed a careful analysis of the water vapor variations using Medium-Resolution Imaging Spectrometer and Moderate Resolution Imaging Spectroradiometer near-infrared water vapor products and then we inverted wrapped interferograms for both topographic correlated phase delays and a simple model source strength. In 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.
dc.identifier.citationGEOPHYSICAL RESEARCH LETTERS,Vol.42,3870-3879,2015
dc.identifier.doi10.1002/2015GL063872
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/4034
dc.language.isoen
dc.publisherAMER GEOPHYSICAL UNION
dc.sourceGEOPHYSICAL RESEARCH LETTERS
dc.subject.englishInSAR
dc.subject.englishatmospheric artifacts
dc.subject.englishvolcano ground deformation
dc.titleRevised interpretation of recent InSAR signals observed at Llaima volcano (Chile)
dc.typeArticle
uct.catalogadorWOS
uct.indizacionSCI
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