Antarctic palaeo-ice streams

摘要: We review the geomorphological, sedimentological and chronological evidence for palaeo-ice streams on continental shelf of Antarctica use this information to investigate basal conditions processes, identify factors controlling grounding-line retreat. A comprehensive circum-Antarctic inventory known streams, their characteristics minimum ages retreat following Last Glacial Maximum (LGM) is also provided. Antarctic are identified by a set diagnostic landforms that, nonetheless, display considerable spatial variability due influence substrate, flow velocity subglacial processes. During LGM, extended, via bathymetric troughs, edge Peninsula West Antarctica, typically, mid-outer East Antarctica. The history Ice Sheet since LGM characterised asynchroneity, with individual ice exhibiting different histories. This allows be classified into discrete styles controls investigated. Such analysis highlights important impact internal stream dynamics, such as bed slope, drainage basin size. Whilst may triggered, some extent paced, external (atmospheric oceanic) forcing, each will modulate precise timing rate through time.