A new device on the drill – University of Copenhagen

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EastGrip - The East Greenland Ice-core Project > Field Diaries Folder > UK diaries 2017 > A new device on the drill

05 July 2017

Wednesday 5th of July 2017

The drilling operation is now fully committed to reducing the inclination in the borehole.

A new device on the drill

The drilling operation is now fully committed to reducing the inclination in the borehole. Today a metal spring has been bolted to the green glass fiber core barrel near the drill head in an effort to recurve the hole back towards a smaller inclination. This is the first time such a device has been used on our drill. With the new drill software the drillers are able to determine whether or not the spring is oriented as desired down hole. After mounting the spring, the drillers started reaming the bore hole a time consuming operation.
Otherwise all science operations proceeded as planned, and we also had some time to enjoy a beautiful sight in camp: A falcon! The falcon seems to be particularly happy about one of our boxes on a cargo sled on the camp perimeter. 

What we did today:

  1. Servicing snowmobiles.
  2. Deep drilling core length at 19.00: 2.47 m.
  3. Logging depth at 19.00: 584.46 m.
  4. Drill software updated with more accurate drill orientation calculation.
  5. Reaming of bore hole with new spring system near drill head.
  6. Water isotopes: Cutting 2.5 cm samples from bags 12 to 26 in Auger core A1-17.
  7. Water vapour, methane, aerosols, snow and boundary layer measurements.
  8. Physical properties measurements.
  9. Cleaning of core troughs.

Weather: Sunny day. Wind turned from W to SW during the day, up to 5 m/s. Temperature between -24 °C and -12 °C.

FL, Bo Vinther

A falcon is visiting EGRIP.

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