13 November, 2004
Hard work, lot’s of fun!
Temperature: 5* F in am, 19 * F in pm
Location: Lake Hoare
Field work requires lots of effort and lots of teamwork. Scientists work awfully hard out in the field. Tasks that sound like they should be quite simple are much more difficult to accomplish in remote locations. It is humbling to see so many scientists working so hard to learn about our world. I am privileged to be able to help in the process.
First thing this morning, we went out to the dive hole to check on the melting progress. It is forming nicely; we hope to be diving on Monday! We still have the heating coil down the hole to increase the diameter of the hole. The hole is also coming close to the auger that is frozen into the ice. Ian and I set up a couple ice screws to guide the heating coil to the most desirable position for expedient melting. The edges of the hole are beautiful; I am anxious to get in and see it from below!
While we wait for the dive hole to finish melting, there is plenty of other work to be done. We measured the water level of the lake. This information gives the scientists some insight into what the climate conditions were like through the year. Higher lake levels mean warmer conditions, thus more melting off the glacier. The melt water flows into the lake, raising the water level. Likewise, lower lake levels indicate cooler conditions. We used the surveying equipment to measure the lake water level. First we had to drill a hole to allow the water level to expose itself!
To compliment this data, we also went to various locations throughout the lake and measured the ablation rate of the ice. The ice ablates, or is removed, from the surface of the lake. Several years ago, Peter put several ablation stakes into the lake. These are poles that stick up from the surface of the ice and extend through the ice into the lake. The poles are frozen into the lake. As the ice ablates off the top and refreezes on the bottom, the poles are moved upward. Each year Peter measures how much of the poles are exposed compared to the previous year. This year there is a three foot addition to the amount of exposed poles; that is impressive!
As we retired for the evening, at 11:30 pm, we refilled the fuel in the generators and hotsy’s so they would burn through the night. The “stuck” auger is almost free! The dive hole looks quite inviting!
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