Müller Ice Cap Daily Report Wednesday April 23

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 Daily Report for the 23 April 2025

The first day wet drilling. It requires more care to preserve the drill liquid and not pollute. We pump liquid down through a 80 m long firehose so it enters the borehole below the pore close off and thus, cannot seep out into the ice. Grant has made a ‘cable wiper’ that is mounted on the cable just over the liquid in the borehole. It wipes the liquid off the cable again to reduce the loss. On the surface we gather the liquid in buckets and melts the mixture of drill liquid and ice cuttings in a drum so the water and drill liquid separates. The drill liquid is then reused. We all wear special drill clothes that stays outside our kitchen tent and dries overnight in the generator tent.

What we have done:

-Drilled 9 runs to run 91, from 99.66 m to 117.42

-Logged, weighed, O18 sampled and ECM measured bags 100 - 117.

-Finished the first shallow ice core at a depth of 70 m

 

Dorthe Dahl-Jensen

 

Wx at Müller: Ground fog clearing to scattered clouds, Low winds, temperatures between -19 to -14 deg C .

 Caption: Drillers and loggers in drill suits



Caption: Grant with the heated drum melting the mixture of drill liquid and ice cuttings





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