Antarctic Submersible Vanishes After Revealing Hidden Ice Structures
A robotic submersible named Ran, part of an international effort to study West Antarctic ice shelves, disappeared under the Dotson Ice Shelf in January 2024 after completing a detailed ~140 sq km survey that uncovered previously undocumented subglacial features, including teardrop-shaped melt formations; no beacon or debris has been found, the incident halts follow-up data collection in the Amundsen Sea, and investigators are weighing equipment failure or collision as possible causes, while the 2022 dataset continues to inform revised models of basal melting driven by warm Circumpolar Deep Water.