Despite conditions on Mars favoring cold-based glaciers, there is also evidence of wetbased glaciers. We compare potential sources of basal water, and conclude that several melt mechanisms are possible. Gas hydrate clathrates within glacial ice can cause melting point depression, and are an intriguing possibility because the dissociation of clathrates releases a large quantity of energy in addi...

Climatic warming following the Last Glacial Maximum caused southern Laurentide Ice Sheet (LIS) to begin ∼2,000-year cycles of retreat and readvance whose cause remains ambiguous. By developing a marine-calibrated chronology LIS position, we counterintuitively demonstrate that between 17.6 11.3 ka, ice advanced during times northern-hemisphere retreated cooling. Here propose cyclical feedback: M...

Meltwater content and pathways determine the impact of Antarctica's melting ice shelves on ocean circulation climate. Using glider observations, we quantify meltwater distribution transport within Bellingshausen Sea's Belgica Trough. is present at different densities with turbidities: both are indicative a layer's shelf origin. To investigate how ice-shelf origin separates into export pathways,...

Previous predictions of sea-level change subsequent to the last glacial maximum show significant, systematic discrepancies between observations at Tahiti, Huon Peninsula, and Sunda Shelf during Lateglacial time (approximately 14,000 to 9000 calibrated years before the present). We demonstrate that a model of glacial isostatic adjustment characterized by both a high-viscosity lower mantle (4 x 1...