| Data from the GRIP ice core from Greenland show that this cold period was not uniformly cold and 24 interstadials are recognized. |
| In 1974 he turned to Mount Logan as a promising ice core site for paleo-environmental studies. |
| The evidence comes from a 364m ice core containing a record of freezing and melting over the previous millennium. |
| It will be reassembled in the spring and the hole finished off and the ice core recovered. |
| With a simple light table and an ice core, Dr. Koerner can also see how summer temperatures have shifted over time on an individual ice cap. |
| For glaciologists, examining an ice core extracted from the depths of a glacier is like reading the table of contents of a history book. |
