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The test drill begins
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Off into the ice: scientists from the RWTH Aachen use a simple melt probe to drill a cylindrical channel into the ice of the glacier into which the pinger is inserted. The channel is then filled with water and left to ice up again. Fixed in the ice, the pinger is in ideal contact with the glacier ice surrounding it. Whenever it transmits an acoustic signal into the ice, the receivers of the EnEx-IceMole may determine the direction from which the signal arrives and, based on its runtime, the distance between the pinger and the probe.
Credit: RWTH Aachen/Peter Linder
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