About The Events
| Event | Age, Kyr | ||
|---|---|---|---|
| Hemming (2004) | Bond & Lotti (1995) | Vidal et al.. (1999) | |
| H0 | ~12 | ||
| H1 | 16.8 | 14 | |
| H2 | 24 | 23 | 22 |
| H3 | ~31 | 29 | |
| H4 | 38 | 37 | 35 |
| H5 | 45 | 45 | |
| H6 | ~60 | ||
Heinrich events are global climate fluctuations which coincide with the destruction of northern hemisphere ice shelves, and the consequent release of a prodigious volume of sea ice and icebergs. The events are rapid: they last around 750 years, and their abrupt onset may occur in mere years (Maslin et al.. 2001). Heinrich events are observed during the last glacial period; the low resolution of the sedimentary record before this point makes it impossible to deduce whether they occurred during other glacial periods in the Earth's history.
Heinrich events occur during some, but not all, of the periodic cold spells preceding the rapid warming events known as Dansgaard-Oeschger (D-O) events, which repeat around every 1,500 years. However, difficulties in establishing exact dates cast aspersions on the accuracy—or indeed the veracity—of this statement. Some (Broecker 1994, Bond & Lotti 1995) identify the Younger Dryas event as a Heinrich event, which would make it H0.
Read more about this topic: Heinrich Event
Famous quotes containing the word events:
“There are many events in the womb of time which will be delivered.”
—William Shakespeare (1564–1616)