Churchill RCT-1

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General Information

Created: 2014-01-09 13:47:43
Modified: 2014-02-11 15:04:56

Active: No
Country:Canada
Site:Churchill Hudson Bay
GTN-P:CA 79
TC-Code:RCT-1
Responsible Countries: Canada,
Timezone:UTC/GMT -06:00 hours
Vegetation Type:Shrub Tundra
Responsible Person:Barry Goodison

Churchill A,  Station No. 5060600

Churchill A is about 2km west of RCT-1, on the same rock ridge, but among taxiways, and about 60 from the nearest hangar. 

This hole does not reach to a zero amplitude depth.  Mean annual ground temperature for the Year 2000 at 15m was -1.89C, with an annual amplitude of 1.8C.

MAAT at the site was -5.7C for the year 2000.

Mean snow depth for 2000 was 85mm.

MAAT for 2000 at Churchill A was -4.9C
and mean snow on the ground at month end was 162mm.

MAGT  (C) : -1.7
MAGT Depth (m) : 14.9
MAGT Date/ Period : Apr 2007-Mar 2008

The hand-held balance bridge measurements gave a range of -2.6 to -3.6C of MAGT at 15m for the period 1973 to 1983.

The datalogger program from 1986 through 1995 gave a range of -5.2 to 1.5 for daily temperatures and a small range of mean annual ground temperatures around -2.2C

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

Churchill A,  Station No. 5060600

58 44 N  94 03 W

Churchill A is about 2km west of RCT-1, on the same rock ridge, but among taxiways, and about 60 from the nearest hangar.

AIR TEMPERATURE AND SNOW COVER THICKNESS/DENSITY MEASUREMENTS AT THE BOREHOLE SITE (indicate frequency of observations):

Air temperature: Yes [X] No [ ]    Snow thickness: Yes[X] No[ ]   Density: Yes [ ] No[X]

Depth:15 m
Drilling Angle:90 °
Deepest Sensor:15 m
Drilling Method:YEAR DRILLED: 1973, during Sept 20-23. Four holes done.
Date Drilled:20. Sep 1973
Type:Road
Distance From Road:15 m
Type:Anthropogenic: Churchill airport terminal
Distance From Heat:300 m
Other Disturbance:Natural: Hudson's Bay
Distance From Heat:700 m
Aspect:320.7 °
Permafrost Zone:Continuous
Vegetation:Shrub Tundra The climate/ecozone here is known as a special marine/Arctic tundra, because the sea breeze and the salt air are part of the stress complex.
Landform:This is coastal Hudson's Bay. The land has been uplifting continually since the retreat of the continental glacier some 10,000 years ago. All parts of this coast were part of the sea at some time in recent geological history.
Lithology:This is a hard rock site, with the hole entirely in hard rock (recorded as quartzite), seemingly with few fissures to migrate water.
Morphology:Local relief consists of rock elements on the order of 1m with a horizontal scale of a few metres to several 10s of metres. Soil, both sandy silt and organics, fill low parts in the rocks and becomes a continuous cover about 1km to the south (away from Hudson's Bay). The well itself is on a near-flat and level place on the rock outcrop, with horizontal extent of about 50m, and littered with scattered rocks from 20cm to 2m in dimensions.
Access Timeseries
Bibliographic References
Brown, R.J.E., 1978. Influence of climate and terrain on ground temperatures in the continuous permafrost zone of Northern Manitoba and Keewatin District, Canada. Proc. Third International Conference on Permafrost, Edmonton, Alberta, Vol 1, pp. 15-21 (NRCC 17085)
Granberg, Hardy B., Dec. 1985. Equipment installation for permafrost climate project at Churchill, Manitoba. Final Report, Contract Serial No. OSE85-00156.

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Gallery
Map

Longitude:-94.05622222 °
Latitude:58.75830556 °
Elevation:21 m
EPSG:4326
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