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Ross Ice Shelf response to climate driven by the tectonic imprint on seafloor bathymetry

Tinto, K. J.; Padman, L.; Siddoway, C. S. +28 more

Ocean melting has thinned Antarctica's ice shelves at an increasing rate over the past two decades, leading to loss of grounded ice. The Ross Ice Shelf is currently close to steady state but geological records indicate that it can disintegrate rapidly, which would accelerate grounded ice loss from catchments equivalent to 11.6 m of global sea leve…

Bilobate comet morphology and internal structure controlled by shear deformation

Jorda, L.; Lamy, P. L.; Lara, L. M. +45 more

Bilobate comets—small icy bodies with two distinct lobes—are a common configuration among comets, but the factors shaping these bodies are largely unknown. Cometary nuclei, the solid centres of comets, erode by ice sublimation when they are sufficiently close to the Sun, but the importance of a comet's internal structure on its erosion is unclear.…