Abstract
The oscillations between glacial and interglacial climate conditions over the past three million years have been characterized by a transfer of immense amounts of water between two of its largest reservoirs on Earth - the ice sheets and the oceans. Since the latest of these oscillations, the Last Glacial Maximum (between about 30,000 and 19,000 years ago), ∼50 million cubic kilometres of ice has melted from the land-based ice sheets, raising global sea level by ∼130 metres. Such rapid changes in sea level are part of a complex pattern of interactions between the atmosphere, oceans, ice sheets and solid earth, all of which have different response timescales. The trigger for the sea-level fluctuations most probably lies with changes in insolation, caused by astronomical forcing, but internal feedback cycles complicate the simple model of causes and effects.
Original language | English |
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Pages (from-to) | 199-206 |
Number of pages | 8 |
Journal | Nature |
Volume | 419 |
Issue number | 6903 |
DOIs | |
Publication status | Published - 12 Sept 2002 |