Collection search - Annual tree-ring width and density chronologies from Root Lake, Manitoba [textual record (electronic)]

Record information – Brief
1
Annual tree-ring width and density chronologies from Root Lake, Manitoba [textual record (electronic)]

Hierarchical level:

File

Date:

1981.

Reference:

R214-3120-9-E, RG39

Type of material:

Textual material

Found in:

Archives / Collections and Fonds

Item ID number:

1283995

Context of this record:

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Natural Resources Canada fonds

Canadian Forestry Service sous-fonds

Canadian Forest Service headquarters records

Annual tree-ring width and density chronologies from Root Lake, Manitoba
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Record information – Details
Date(s):

1981.

Place of creation:

Canada

Extent:

1 file, 72 records

Language of material:

English

Scope and content:

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This file contains tree ring chronology data.

The data were collected so present tree ring chronologies could be compared with other forms of proxy data with the purpose of reconstructing past climatic records. An effort was made to collect from the oldest and most climatically sensitive trees on the site. Corollary objectives were to evaluate the dendrochronological quality of trees from this area and to produce tree ring chronologies which could be used for dating purposes.

There is 1 file representing tree ring chronology data for 1 individual tree.

The file was migrated from a binary data structure and placed on new preservation media in 2016.

Provenance:

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Creator: Forintek Canada Corp

Additional name(s):

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Originator: Forintek Canada Corporation

Additional information:

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General note:

CONSERVATION NOTE: Originally, the data base commenced with several identification and scanning information records written in ASCII; now these records are in EBCDIC. In addition, the unloaded database was changed from variable length to fixed length; each record was extended to a physical length of 120 columns.
STATEMENT OF RESPONSIBILITY NOTE: Forintek was previously known as the Western Forest Products Laboratory (WPFL).
COLLECTOR/COLLECTEUR: Forintek Canada Corporation
RELATED PUBLICATIONS: An extensive list of publications is available in the documentation package.
Originator (Principal Investigator): Forintek Canada Corporation

Source of title:

Codebook (for the data)

Conservation:

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Conservation note April 2016
There is one dataset associated with G0000903. When this file was migrated from EBCDIC binary format to the ASCII encoding format in 2016, the files were totally restructured.
There are two 120 byte ASCII records at the beginning of the file that contained metadata about the tree for that specific site. The following is from G0000903_Data1_Binary:
SE1MWST82B11..
1 1 11 19 11 8 16 16 -13 12 1075847172
These records have been stripped off of each dataset and been saved independently from the tree ring data in the Converted Headers directory under PM1. All of the original data resides in the PM0 directory.
In addition, in the original data files, there were two 120 byte data records for each year that is associated with a tree ring. When the files were converted, these two records were combined into one long record so the data could be used with spreadsheet applications such as Excel.
The file G0000903_Data1_Binary originally contained 146 records. The first two metadata records have been stripped from the file for a total of 144 records. When the two records for each data set were concatenated into one record upon migration, the converted file now contains 72 records. Each of these records is associated with a specific year. The output data is 557 bytes long to allow space for the converted integer binary values.
The SAS run used to convert the data is included as part of the metadata as CONVERT_TEMPLATE2.sas.

Related material:

For all available material directly related to tree ring data please consult the following files: G0000819 to G0000820, G0000822 to G0000837, G0000854 to G0000861 and G0000896 to G0000905.

Type of computer file or data note:

Database in flat file format
Subject heading:

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Tree-rings - Chronology

Arbres, Anneaux des - Chronologie

Tree-rings - Root Lake

Arbres, Anneaux des - Lac Root
Source:

Government

Former archival reference no.:

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RG39
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Textual records: electronic

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