SIS2007-06a

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General Information

Created: 2013-11-22 09:00:24
Modified: 2014-11-25 09:27:49

Active: No
Country:Greenland
Site:Sisimiut-TKV
GTN-P:GL DK US 04
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) -1,1
MAGT_DEPTH (m) 3,8
MAGT_DATE 2009

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:20.5 m
Drilling Angle:90 °
Deepest Sensor:11.25 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:Anthropogenic: 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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Longitude:-53.64472 °
Latitude:66.9361 °
Elevation:33.19448853 m
EPSG:4326
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