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Artículo de publicación ISIWe produce the first icefield-wide volume changerate and glacier velocity estimates for the Cordillera DarwinIcefield (CDI), a 2605 km2 temperate icefield in southernChile (69.6 W, 54.6  S). Velocities are measured from opticaland radar imagery between 2001–2011. Thirty-six digitalelevation models (DEMs) from ASTER and the SRTM DEMare stacked and a weighted linear regression is applied to elevationson a pixel-by-pixel basis to estimate volume changerates.The CDI lost mass at an average rate of −3.9±1.5 Gt yr−1between 2000 and 2011, equivalent to a sea level rise (SLR)of 0.01±0.004mmyr−1 and an area-averaged thinning rateof −1.5±0.6mw.e.(water equivalent) yr−1.Thinning is widespread, with concentrations near the frontof two northern glaciers (Marinelli, Darwin) and one western(CDI-08) glacier. Thickening is apparent in the south, mostnotably over the advancing Garibaldi Glacier. The northeasternpart of the CDI has an average thinning rate of−1.9±0.7mw.e. yr−1, while the southwestern part has anaverage thinning rate of −1.0±0.4mw.e. yr−1.Velocities are obtained over many of the CDI glaciersfor the first time. We provide a repeat speed time series atthe Marinelli Glacier. There we measure maximum frontspeeds of 7.5±0.2mday−1 in 2001, 9.5±0.6mday−1 in2003 and 10±0.3mday−1 in 2011. The maintenance of highfront speeds from 2001 to 2011 supports the hypothesis thatMarinelli is in the retreat phase of the tidewater cycle, withdynamic thinning governed by the fjord bathymetry

Satellite-derived volume loss rates and glacier speeds for the Cordillera Darwin Icefield, Chile