Fig. 5From: Mapping and measuring lava volumes from 2002 to 2009 at El Reventador Volcano, Ecuador, from field measurements and satellite remote sensing a Map of topographic change retrieved from ALOS-1 interferograms (Additional file 2: Table S1). Only values that exceed our lower limit for topographic change (δ z  − σ z ) are shown. b Map of lava flow subsidence at El Reventador. Displacement values are averages for a period between 2007 and 2009 when SAR images were acquired and assuming a linear deformation rateBack to article page