We have been trying to measure the depth of the
Bagley Ice Valley for years, using airborne radar. But it has been an enigma; we suspected because of its depth. Temperate ice (ice at its freezing point) contains water and that makes it really difficult for radar waves to penetrate. We had a chance to do a survey on the ground with a very low frequency system and it looks like this was successful. We are still working on the data, but it looks like we've found ice that is more than 1500 m thick.
 |
| Deployment by Ultima Thule's Single Otter |
 |
| The front half of the radar setup with antenna and a sled containing the receiver |
 |
| How far is it to bedrock? Photo: Jack Holt |
 |
| Pulling the radar across the glacier. Michael on the snowmachine and I'm being pulled on skis. Photo: J. Holt |
No comments:
Post a Comment