Sustained ice loss and ice-shelf flow reorganization in the Carney-Duncan sector, West Antarctica (2010-2026)

<jats:p> Small islands and ice rumples can regulate ice-shelf flow, but conventional satellite altimetry poorly resolves their evolution. Here we use CryoSat-2 SARIn swath altimetry to quantify surface-elevation and volume changes over Carney Island and the adjacent Duncan sector at the outer margin of West Antarctica&amp;rsquo;s Getz Ice Shelf. From July 2010 to March 2026, these sectors lost ice at approximately 2.1 km <jats:sup>3</jats:sup> yr <jats:sup>-1</jats:sup> with an integrated loss of more than 30 km <jats:sup>3</jats:sup> . Thinning is concentrated along valley troughs and fast-flowing corridors, resolves stronger thinning than the previous multi-mission altimetry product. Landsat optical imagery shows progressive unanchoring of the ice rumple within the Carney-Duncan passage since 1986, with more pronounced retreat after 2002, accompanied by local speed-up and flow-path reorganization linked to ice flow from the Stockholm and Bali Glaciers. These results link localized thinning to weakening pinning and demonstrate that changes in small peripheral features can reorganize Antarctic ice-shelf flow. </jats:p>