Comment: 19:30 - 20:38 (01:08)
Source: Annenberg/CPB Resources - Earth Revealed 23. Glaciers
Keywords: "Chester C. Langway Jr.", Greenland, "Greenland Ice Core Program", "continental glacier", "ice sheet", drilling, glacier, "glacial ice", climate, weather, "ice core"
Our transcription: Since the early 1970's, an international project has been underway to drill into Greenland's vast continental glacier and obtain ice core samples.
Called the "Greenland Ice Core Program," this effort involves scientists from countries around the world.
The prime difficulties in an operation, a field operation such as drilling in ice, relate primarily to the climate, the weather.
It's not the best place to work, but it's overcome somewhat by the technique used today to excavate trenches and cover the tops of the trenches with some form of a material.
And to work, if you will, underground with what power sources available and so forth.
So we can eliminate the inclement weather problems and work as we do on a 24-hour basis.
After all, it does take up to three years to drill through the bedrock in any location whether it be Greenland or Antarctica, and that length of time requires a lot of stamina from the crew involved.
Geology School Keywords