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4 mar 2019 · The losses of continental ice sheets in both polar regions are accelerating. Although there remain large uncertainties in all prognoses as well as about the mechanisms involved, a catastrophic sea-level rise within decades appears to be more and more certain.
Continental Antarctica is largely ignored as a biome, although it has a diverse array of surface lakes, numerous subglacial lakes (e.g. Lake Vostok), ice sheets and some ice free areas, all of which harbour a range of life forms [2–4].
Ice sheet. An ice sheet is a chunk of glacier ice that covers the land surrounding it and is greater than 50,000 kilometers wide. An ice sheet is also known as a continental glacier (e.g. Antartic Ice Sheet or Greenland Ice Sheet).
The history of individual ice sheets can be determined directly by dating ice margin retreat and ice surface thinning, and indirectly from inferences of ice sheet runoff to the ocean.
Ice sheet, any glacier that extends in continuous sheets, moving outward in all directions, whose area exceeds more than 50,000 square km (19,000 square miles). In general, such expanses of frozen water are called ice sheets if they are the size of Antarctica or Greenland and ice caps if they are.
15 sie 2019 · Here we assess the active role of ice sheets in the global carbon cycle and potential ramifications of enhanced melt and ice discharge in a warming world.
1 sty 2021 · Contemporary Sea-level rise in a geologic perspective. Future warming of Earth will inevitably lead to sea-level rise due to both the thermal expansion of ocean water and the direct impact of melting terrestrial ice (i.e., ice sheets, glaciers, and permafrost) on global ocean volume.
