July 19, 2019

CryoEgg has been recovered

Trevor and Romain presenting the recovered CryoEgg

A day with many stories. A rainbow in the morning and recovery of the CryoEgg in the evening. The rainbow was unusual and indicated a very warm day on the centre of the Greenland ice sheet where we only see halo’s (icebows) because temperature are below 0 deg C. The recovery of the CryoEgg took most of the attention. Romain had created a grabber with 6 core catchers and top holes to allow the liquid to flow past the grabber as the clearance between the grabber and the borehole is less than 1 mm. The grabber was lowered down to the bottom of the borehole and pushed over the CryoEgg until we beleived it was completely in the grabber. It was pulled up 2100 m with a speed of 4-6 cm/s to allow the liquid to move gently around the egg. It took 10 hours to get the grabber to the surface and some quite nervous drillers waiting to see if CryoEgg actually was grabbed. It was – and Trevor and Romain – were very relived and happy. Congratulations to both for excellent work. The camp came down and it was celebrated with a speech from Trevor.

What we did during the day:

  1. CFA measurements of 37 bags, last bag 3632.
  2. PP measurements, Volume samples
  3. Station for atmospheric moisture sampling and isotopic measurement is active.
  4. Test runs with the Mills Cross Radar on the skiway and on IceBridge and Polar5 lines
  5. Continued work on rover and th Lisa Box
  6. Replaced broken bolts in the Pisten Bully belts
  7. Closed the doubled sided pit and removed beams and plywood to timber sledge
  8. Grabbed and surfaced the CryoEgg from the bottom of the EGRIP deep borehole

EGRIP population is 23

Weather: Wind from 6kts to 15kts gusting 21 kts. Wind from SW changing cloud conditions from full overcast to blue sky during the day. Temperatures from -13°C to 0°C.

FL, Dorthe Dahl-Jensen

Celebration in the drill trench with a speech from Trevor

Rainbox at 07:30 local at EGRIP

Amazing cook Frederik with Hannah as cook helper serving the Danish meal ‘tartelleter med hønsefrikasse)