General Information

Created: 2014-01-15 15:12:31
Modified: 2014-02-27 12:57:15

Active: No
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



Borehole is located 25 m from lake shore and 45-50 m from small stream and thermokarst ponds.

In the summer of 2009, a heated drinkingwater distribution pipe was constructed and buried approximately 20 m from borehole site. Dog sledding and snow machine trails pass close by borehole site.

MAGT (C) -1,1
MAGT_DEPTH (m) 4,6


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

Sensor at 6.25 m, MAGT 2008: -1.05 °C

Maximum minus minimum temperature at 6.25 m, 2008:  0.12 °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 515 Sisimiut:    53°41’26’’W 66°56’23’’N    15 meters ASL.

MAAT 2008: -2.73 °C

Depth:7.3 m
Drilling Angle:90 °
Deepest Sensor:4.6 m
Drilling Method:Nordmeyer rig, dry rotary drilling, ice corer, diamond rock coring.
Date Drilled:01. Jan 2007
Type:Paved road
Distance From Road:50 m
Type:In the summer of 2009, a heated drinkingwater distribution pipe was constructed and buried approximately 20 m from borehole site.
Distance From Heat:20 m
Other Disturbance:lake
Distance From Heat:25 m
Aspect:44.4 °
Permafrost Thickness:17.5 m
Permafrost Zone:Discontinuous
Landform:Sedimentary strata, Quarternary, late to post glacial.
Lithology:The geology encountered in the borehole consisted of 1.5 m post glacial, fluvial sand, followed by a 16.3 m thick marine sequence of silty clays with some silt and sand layers as well as occasional boulders. The borehole was terminated at a depth of 20.5 m b.g.s. following a 2.3 m thick coarse grained sequence of glacial origin. The termination depth is expected to coincide with the depth to bedrock. The fine-grained marine sequence showed extremely high volumes of segregated ice in the form of ice lenses.
Morphology:Top of hill or ridge
Description:Situated in a large unexploited area in the central part of town, characterized by considerable active thermokarst. The borehole is presently relatively undisturbed by thaw.
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Bibliographic References

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Longitude:-53.64472 °
Latitude:66.9361 °
Elevation:49 m
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