Investigating the permafrost in NE Greenland
Permafrost research makes you happy Photo: Dominik Langhamer
Thanks to Hanne H. Christiansen from UNIS for the text of this clog, sent from the field. To follow their adventures or get more details about the course have a look at www.tspnorway.com !
In just one long day 10 m of mainly frozen sediment cores were collected from 4 different parts of the landscape here in NE Greenland using hand held drilling machines. Thermistor strings were installed down to 3.2 m below the terrain surface in the deepest hole. This was done by the International University Course on High Arctic Permafrost Landscape Dynamics in Svalbard and Greenland, which is run by the University Centre in Svalbard, UNIS. To our knowledge these are the only thermistor strings installed for permafrost temperature monitoring in East Greenland.
We have also probed the active layer thickness both in Svalbard and here in East Greenland. We see that the active layer generally is thicker in Svalbard than here in Zackenberg, despite that we are here located more than 450 km south of Svalbard. This shows directly the overall climatic control on the ground temperatures, with maritime Svalbard being much warmer than continental East Greenland, where the East Greenlandic current generally causes much colder conditions.
DC6869: Thermistor string being installed in a 2.7 m deep borehole in the ZEROCALM2 site in the Zackenberg lowland for permafrost temperature monitoring. You see the drilling machine that we use for drilling the hole, a permafrost core just being retrieved from the hole, and the thermistor string that just went into the newly drilled hole. Photo: Bo Elberling
We are now working in the Zackenberg valley at 74