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Data Set ID:
GGD605

Schefferville Permafrost Temperature Database, Version 1

This data set consists of ground temperature data from 192 boreholes in the area of Schefferville, Quebec (54°48'N, 66°50'W), located within the discontinuous permafrost zone. Temperature cables were installed at the Barney, Fleming, Knox mine, Timmins, Ferriman, Howse, Lance, Pinx, Red and Star ore deposits. Borehole depths ranged from 4 to 137 m, with the majority of boreholes being between 25 and 125 m deep. Data are provided for the period between 1957 to 1982. The length of record varies from only one temperature record to records greater than 10 years in length, with the longest record being 16 years long. The data are provided in both an MS Access database and tab-delimited ASCII formats. The database consists of two tables: one which contains information for individual boreholes, such as location and length of record, and a second table that contains the ground temperature data for all boreholes. The two tables are linked by a unique borehole site number. Data are available via ftp..

Geographic Coverage

Parameter(s):
  • Frozen Ground > Permafrost
  • Frozen Ground > Soil Temperature
Spatial Coverage:
  • N: 54.8, S: 0, E: 0, W: -66.83

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 January 1957 to 31 December 1982
Temporal Resolution: Not specified
Data Format(s): Not specified
Platform(s) Not specified
Sensor(s): Not specified
Version: V1
Data Contributor(s): Sharon Smith, Sharon Smith, H.B. Granberg, Margo Burgess
Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

2003. Schefferville Permafrost Temperature Database, Version 1. [Indicate subset used]. [Date Accessed].

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Detailed Data Description

Format

The data are provided in both MS Access database and tab-delimited ASCII formats. The database consists of two tables: one which contains information for individual boreholes, such as location and length of record, and a second table that contains the ground temperature data for all boreholes. The two tables are linked by a unique borehole site number.

File headers in the first MS Access database table, and in the file "location.txt", include:

ID - Borehole site number (unique identifier)
Location - Ore deposit or mine that the borehole is associated with
Descriptive Name - Descriptive local name for the borehole site
IOCC Ref - The IOCC designation for the borehole site
Easting - Easting UTM coordinate (m) of borehole location based on NAD27 datum
Northing - Northing UTM coordinate (m) of borehole location based on NAD27 datum
Zone - UTM zone in which the borehole is located
Elev - Elevation (m) above sea level of the borehole
Number of Records - The number of observations recorded for the borehole
Start Date - The date of the first record in the observation period (mm/dd/yy in ASCII file)
End Date - The date of the last record in the observation period
Max Depth - The depth of the deepest temperature sensor

File headers in the second MS Access database table, and in the file "temp_table.txt", include:

BH - Borehole site number (unique identifier)
Date - Date of the observation (mm/dd/yy in ASCII file)
Depth - Depth of the observation (cm)
Temp - Ground temperature (°C)

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File Naming Convention

The MS Access database file is named ggd605_scheff_data.mdb. The tab-delimited ASCII files are named ggd605_scheff_location.txt and ggd605_scheff_temp.txt.

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File Size

The ASCII files range in size from 16 KB to 1.6 MB. The MSAcess database is 4.6 MB.

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Spatial Coverage

Data were collected at 192 boreholes in the Schefferville, Quebec, area (54°48'N, 66°50'W).

Spatial Coverage Map:


Location of boreholes at Schefferville:

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Temporal Coverage

Data were collected between 1957 and 1982.

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Parameter or Variable

This data set consists of ground temperature data from boreholes within a discontinuous permafrost zone.

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Software and Tools

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Data Acquisition and Processing

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Contacts and Acknowledgments

Sharon Smith
Geological Survey of Canada 
Natural Resources Canada
601 Booth Street
Ottawa, Ontario
K1A 0E8 Canada 

Margo Burgess
Geological Survey of Canada 
Natural Resources Canada
601 Booth Street
Ottawa, Ontario
K1A 0E8 Canada

Acknowledgments: 

Data rescue (from the original nine track tape) was facilitated by W. Pollard of McGill University and funding from the Government of Canada’s Climate Change Action Fund. Jason Chartrand assisted with reformatting of the database and map preparation.

Document Information

Please cite these data as follows:

Granberg, H.B., J.E. Lewis, T.R. Moore, P. Steer, and R.K. Wright. 1984. Schefferville Permafrost Research Volume I, Parts 1a and 1b: summary review and recommendations and catalogue of available materials.Earth Physics Branch Open File 84-7. Distributed by Boulder, CO: National Snow and Ice Data Center. Digital Media.

The paper by S. Smith and M. Burgess provides historical background on the database and a spatial coverage map.

Document Creation Date:

24 February 2003

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