
Wondering what our GPR antennas looked like? Allan arrived on November 24 and we spent the day helping him set up his tent and get his gear unpacked, as well as putting away more supplies that came with him (beer!) On the next day, we set up the 100 MHz antenna and tried it out. It is kind of like a big sled. It moves across rocks and dirt about like you might expect a sled to. One improvement I could think of for this particular area would have been a sheet of plastic across the entire bottom because rocks kept getting caught on the edges of the red boxes.

We set up about 4 lines and tried to figure out a scheme. That particular area was very very rocky, and we kept getting interference in the radar profiles (we learned later it was caused by various things jiggling too much!) So we learned right off the bat that we would have to do some rock clearing before pulling the antenna - or find smoother places to pull. The 400 MHz antenna is much smaller. We put it in a sled (photo later) - a real sled this time, made by Mountainsmith. This sled did not get caught and was easier to pull.

After a few runs with the GPR and GPS, we went back to the cook tent for dinner and discussed a map created by Hall and Denton in 2000. It is the only really good map of Taylor Valley marking the geological and geomorphological features.

















