Snow drift 2

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General Information

Created: 2013-12-10 00:26:02
Modified: 2014-03-06 13:33:45

Active: No
Country:Svalbard
Site:Svalbard
GTN-P:NO 43
TC-Code:SN-B-2
Responsible Countries: Norway, Svalbard,
Timezone:UTC/GMT +01:00 hours
Vegetation Type:Tundra
Responsible Person:Hanne Hvidtfeldt Christiansen

This borehole was drilled in an old dry river channel in Adventdalen. The site has c. 3m snow in winter in contrast to borehole Snow Patch 1 (SN-B-1), which has only few decimeters of snow, located few meters away. Unfrozen water was encountered during drilling. This caused problems both for the drilling itself and for the installation of the casing. The hole was drilled to 12m, but was not possible to install the casing deeper than to 5.4m. In summer 2008, the casing was filled with ice. This ice has to be removed before a thermistorstring can be installed.

 

Permafrost present but thickness not known.

 

GROUND TEMPERATURE AT ZERO ANNUAL AMPLITUDE OR AT LOWERMOST THERMISTOR

Hydro Year; Locality in borehole ;  Depth(m);  Temp. ; Max-min ;  Days

2008-2009 ; Lowermost thermistor ;    -5.00 ; -2.4 ;    0.3 ;   254 (not full year)

 

MEASUREMENTS AT THE BOREHOLE SITE

Observation of air temperature: Yes

Observation of snow thickness:  Yes

Depth:12 m
Drilling Angle:90 °
Diameter:3.2 cm
Deepest Sensor:5 m
Drilling Method:Hammer Drilling
Date Drilled:01. Jan 2008
Type:Road
Distance From Road:500 m
Aspect:340.1 °
Permafrost Zone:Continuous
Vegetation:Tundra
Lithology:0-2m: Diamicton. River bed deposits. Coarser towards the top. Layers of more fine material between. Some ice lenses at 1.5-2m; 2-4m: coarse gravel & finer material. Unfrozen water from 3m; 4-6m:gravel & finer material. Unfrozen water; 6-12m: wet. Drilling aborted.
Morphology:Plain. Local relief: 3m
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Longitude:15.91324 °
Latitude:78.18752 °
Elevation:16.03193665 m
EPSG:4326
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