General Information

Created: 2014-01-15 16:12:19
Modified: 2014-02-27 13:19:26

Active: Yes
Responsible Countries: Denmark, Greenland, United States,
Timezone:UTC/GMT -03:00 hours
Vegetation Type:Tundra
Responsible Person:Thomas Ingeman-Nielsen

Borehole and instrumentation is funded by the National Science Foundation under grant no: ARC-0612533: Recent and future permafrost variability, retreat and degradation in Greenland and Alaska: An integrated approach.


Primary project partners:

Vladimir Romanovsky, Permafrost Laboratory, Geophysical Institute, University of Alaska Fairbanks, Alaska, USA

Niels Foged, Department of Civil Engineering, Technical University of Denmark, Building 204, DK-2800 Kgs. Lyngby, Denmark

Keld Hornbech Svendsen, Asiaq, Qatserisut 8, P.O.Box 1003, 3900 Nuuk, Greenland

Jens Hesselbjerg Christensen, Danish Meteorological Institute, Lyngbyvej 100, 2100 København Ø, Denmark


MAGT (C) -3,5
MAGT_DEPTH (m) 4,0

Permafrost present but thickness not known. 


MEAN ANNUAL GROUND TEMPERATURE AT OR NEAR DEPTH OF ZERO ANNUAL AMPLITUDE (°C) – report value for most recent year or 12 month interval

Deepest sensor at 4.0 m, MAGT 2008: -3.5 °C

Maximum minus minimum temperature at 4.0 m, 2008:  0.7 °C


NAME AND LOCATION OF CLOSEST CLIMATE STATION (latitude, longitude, and distance from borehole, km) – provide (if available) mean monthly air temperature and snow depth of reporting interval for mean annual ground temperature –

Asiaq 545 ILULISSAT:    51°03’46’’W   69°14’23’’N   29 meters ASL.

MAAT 2008: -3.9 °C

Depth:3.8 m
Drilling Angle:90 °
Deepest Sensor:4 m
Drilling Method:electric auger drill
Date Drilled:01. Jan 2007
Type:Paved road
Distance From Road:200 m
Type:Anthropogenic: dog sledding trail (within 10-20 m, changing from year to year)
Distance From Heat:10 m
Other Disturbance:Anthropogenic: Ilulissat airport rock fill embankment
Distance From Heat:75 m
Slope:6 °
Aspect:15.7 °
Permafrost Thickness:>= 4 m
Permafrost Zone:Discontinuous
Landform:Sedimentary strata, Quaternary, late to post glacial.
Lithology:The geology at this site consists of a very thin (few cm) vegetative cover followed by a sequence of late to post glacial marine silty clays. The depth to bedrock is 6.9 m as observed from a borehole at the same location drilled in 1978 in connection with site investigations for the airport. Bedrock is gneiss. Ice content is high in the upper 1 m of the permafrost. Due to a considerable residual salinity, the sediments in the deeper parts of the borehole have large freezing point depressions, rendering the sediments technically unfrozen.
Morphology:Flat, low topography bedrock outcrop east and west of borehole.
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Bibliographic References

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Longitude:-51.0975 °
Latitude:69.21861 °
Elevation:27.24311447 m
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